Class: Aws::AutoScaling::Client

Inherits:
Seahorse::Client::Base
  • Object
show all
Includes:
ClientStubs
Defined in:
lib/aws-sdk-autoscaling/client.rb

Overview

An API client for AutoScaling. To construct a client, you need to configure a ‘:region` and `:credentials`.

client = Aws::AutoScaling::Client.new(
  region: region_name,
  credentials: credentials,
  # ...
)

For details on configuring region and credentials see the [developer guide](/sdk-for-ruby/v3/developer-guide/setup-config.html).

See #initialize for a full list of supported configuration options.

Class Attribute Summary collapse

API Operations collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Client

Returns a new instance of Client.

Parameters:

  • options (Hash)

Options Hash (options):

  • :plugins (Array<Seahorse::Client::Plugin>) — default: []] —

    A list of plugins to apply to the client. Each plugin is either a class name or an instance of a plugin class.

  • :credentials (required, Aws::CredentialProvider) —

    Your AWS credentials used for authentication. This can be any class that includes and implements ‘Aws::CredentialProvider`, or instance of any one of the following classes:

    • ‘Aws::Credentials` - Used for configuring static, non-refreshing credentials.

    • ‘Aws::SharedCredentials` - Used for loading static credentials from a shared file, such as `~/.aws/config`.

    • ‘Aws::AssumeRoleCredentials` - Used when you need to assume a role.

    • ‘Aws::AssumeRoleWebIdentityCredentials` - Used when you need to assume a role after providing credentials via the web.

    • ‘Aws::SSOCredentials` - Used for loading credentials from AWS SSO using an access token generated from `aws login`.

    • ‘Aws::ProcessCredentials` - Used for loading credentials from a process that outputs to stdout.

    • ‘Aws::InstanceProfileCredentials` - Used for loading credentials from an EC2 IMDS on an EC2 instance.

    • ‘Aws::ECSCredentials` - Used for loading credentials from instances running in ECS.

    • ‘Aws::CognitoIdentityCredentials` - Used for loading credentials from the Cognito Identity service.

    When ‘:credentials` are not configured directly, the following locations will be searched for credentials:

    • ‘Aws.config`

    • The ‘:access_key_id`, `:secret_access_key`, `:session_token`, and `:account_id` options.

    • ‘ENV`, `ENV`, `ENV`, and `ENV`.

    • ‘~/.aws/credentials`

    • ‘~/.aws/config`

    • EC2/ECS IMDS instance profile - When used by default, the timeouts are very aggressive. Construct and pass an instance of ‘Aws::InstanceProfileCredentials` or `Aws::ECSCredentials` to enable retries and extended timeouts. Instance profile credential fetching can be disabled by setting `ENV` to `true`.

  • :region (required, String) —

    The AWS region to connect to. The configured ‘:region` is used to determine the service `:endpoint`. When not passed, a default `:region` is searched for in the following locations:

  • :access_key_id (String)
  • :account_id (String)
  • :active_endpoint_cache (Boolean) — default: false —

    When set to ‘true`, a thread polling for endpoints will be running in the background every 60 secs (default). Defaults to `false`.

  • :adaptive_retry_wait_to_fill (Boolean) — default: true —

    Used only in ‘adaptive` retry mode. When true, the request will sleep until there is sufficent client side capacity to retry the request. When false, the request will raise a `RetryCapacityNotAvailableError` and will not retry instead of sleeping.

  • :auth_scheme_preference (Array<String>) —

    A list of preferred authentication schemes to use when making a request. Supported values are: ‘sigv4`, `sigv4a`, `httpBearerAuth`, and `noAuth`. When set using `ENV` or in shared config as `auth_scheme_preference`, the value should be a comma-separated list.

  • :client_side_monitoring (Boolean) — default: false —

    When ‘true`, client-side metrics will be collected for all API requests from this client.

  • :client_side_monitoring_client_id (String) — default: "" —

    Allows you to provide an identifier for this client which will be attached to all generated client side metrics. Defaults to an empty string.

  • :client_side_monitoring_host (String) — default: "127.0.0.1" —

    Allows you to specify the DNS hostname or IPv4 or IPv6 address that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_port (Integer) — default: 31000 —

    Required for publishing client metrics. The port that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_publisher (Aws::ClientSideMonitoring::Publisher) — default: Aws::ClientSideMonitoring::Publisher —

    Allows you to provide a custom client-side monitoring publisher class. By default, will use the Client Side Monitoring Agent Publisher.

  • :convert_params (Boolean) — default: true —

    When ‘true`, an attempt is made to coerce request parameters into the required types.

  • :correct_clock_skew (Boolean) — default: true —

    Used only in ‘standard` and adaptive retry modes. Specifies whether to apply a clock skew correction and retry requests with skewed client clocks.

  • :defaults_mode (String) — default: "legacy" —

    See DefaultsModeConfiguration for a list of the accepted modes and the configuration defaults that are included.

  • :disable_host_prefix_injection (Boolean) — default: false —

    When ‘true`, the SDK will not prepend the modeled host prefix to the endpoint.

  • :disable_request_compression (Boolean) — default: false —

    When set to ‘true’ the request body will not be compressed for supported operations.

  • :endpoint (String, URI::HTTPS, URI::HTTP) —

    Normally you should not configure the ‘:endpoint` option directly. This is normally constructed from the `:region` option. Configuring `:endpoint` is normally reserved for connecting to test or custom endpoints. The endpoint should be a URI formatted like:

    'http://example.com'
'https://example.com'
'http://example.com:123'
  • :endpoint_cache_max_entries (Integer) — default: 1000 —

    Used for the maximum size limit of the LRU cache storing endpoints data for endpoint discovery enabled operations. Defaults to 1000.

  • :endpoint_cache_max_threads (Integer) — default: 10 —

    Used for the maximum threads in use for polling endpoints to be cached, defaults to 10.

  • :endpoint_cache_poll_interval (Integer) — default: 60 —

    When :endpoint_discovery and :active_endpoint_cache is enabled, Use this option to config the time interval in seconds for making requests fetching endpoints information. Defaults to 60 sec.

  • :endpoint_discovery (Boolean) — default: false —

    When set to ‘true`, endpoint discovery will be enabled for operations when available.

  • :ignore_configured_endpoint_urls (Boolean) —

    Setting to true disables use of endpoint URLs provided via environment variables and the shared configuration file.

  • :log_formatter (Aws::Log::Formatter) — default: Aws::Log::Formatter.default —

    The log formatter.

  • :log_level (Symbol) — default: :info —

    The log level to send messages to the ‘:logger` at.

  • :logger (Logger) —

    The Logger instance to send log messages to. If this option is not set, logging will be disabled.

  • :max_attempts (Integer) — default: 3 —

    An integer representing the maximum number attempts that will be made for a single request, including the initial attempt. For example, setting this value to 5 will result in a request being retried up to 4 times. Used in ‘standard` and `adaptive` retry modes.

  • :profile (String) — default: "default" —

    Used when loading credentials from the shared credentials file at ‘HOME/.aws/credentials`. When not specified, ’default’ is used.

  • :request_checksum_calculation (String) — default: "when_supported" —

    Determines when a checksum will be calculated for request payloads. Values are:

    • ‘when_supported` - (default) When set, a checksum will be calculated for all request payloads of operations modeled with the `httpChecksum` trait where `requestChecksumRequired` is `true` and/or a `requestAlgorithmMember` is modeled.

    • ‘when_required` - When set, a checksum will only be calculated for request payloads of operations modeled with the `httpChecksum` trait where `requestChecksumRequired` is `true` or where a `requestAlgorithmMember` is modeled and supplied.

  • :request_min_compression_size_bytes (Integer) — default: 10240 —

    The minimum size in bytes that triggers compression for request bodies. The value must be non-negative integer value between 0 and 10485780 bytes inclusive.

  • :response_checksum_validation (String) — default: "when_supported" —

    Determines when checksum validation will be performed on response payloads. Values are:

    • ‘when_supported` - (default) When set, checksum validation is performed on all response payloads of operations modeled with the `httpChecksum` trait where `responseAlgorithms` is modeled, except when no modeled checksum algorithms are supported.

    • ‘when_required` - When set, checksum validation is not performed on response payloads of operations unless the checksum algorithm is supported and the `requestValidationModeMember` member is set to `ENABLED`.

  • :retry_backoff (Proc) —

    A proc or lambda used for backoff. Defaults to 2**retries * retry_base_delay. This option is only used in the ‘legacy` retry mode.

  • :retry_base_delay (Float) — default: 0.3 —

    The base delay in seconds used by the default backoff function. This option is only used in the ‘legacy` retry mode.

  • :retry_jitter (Symbol) — default: :none —

    A delay randomiser function used by the default backoff function. Some predefined functions can be referenced by name - :none, :equal, :full, otherwise a Proc that takes and returns a number. This option is only used in the ‘legacy` retry mode.

    @see www.awsarchitectureblog.com/2015/03/backoff.html

  • :retry_limit (Integer) — default: 3 —

    The maximum number of times to retry failed requests. Only ~ 500 level server errors and certain ~ 400 level client errors are retried. Generally, these are throttling errors, data checksum errors, networking errors, timeout errors, auth errors, endpoint discovery, and errors from expired credentials. This option is only used in the ‘legacy` retry mode.

  • :retry_max_delay (Integer) — default: 0 —

    The maximum number of seconds to delay between retries (0 for no limit) used by the default backoff function. This option is only used in the ‘legacy` retry mode.

  • :retry_mode (String) — default: "legacy" —

    Specifies which retry algorithm to use. Values are:

    • ‘legacy` - The pre-existing retry behavior. This is default value if no retry mode is provided.

    • ‘standard` - A standardized set of retry rules across the AWS SDKs. This includes support for retry quotas, which limit the number of unsuccessful retries a client can make.

    • ‘adaptive` - An experimental retry mode that includes all the functionality of `standard` mode along with automatic client side throttling. This is a provisional mode that may change behavior in the future.

  • :sdk_ua_app_id (String) —

    A unique and opaque application ID that is appended to the User-Agent header as app/sdk_ua_app_id. It should have a maximum length of 50. This variable is sourced from environment variable AWS_SDK_UA_APP_ID or the shared config profile attribute sdk_ua_app_id.

  • :secret_access_key (String)
  • :session_token (String)
  • :sigv4a_signing_region_set (Array) —

    A list of regions that should be signed with SigV4a signing. When not passed, a default ‘:sigv4a_signing_region_set` is searched for in the following locations:

  • :stub_responses (Boolean) — default: false —

    Causes the client to return stubbed responses. By default fake responses are generated and returned. You can specify the response data to return or errors to raise by calling ClientStubs#stub_responses. See ClientStubs for more information.

    ** Please note ** When response stubbing is enabled, no HTTP requests are made, and retries are disabled.

  • :telemetry_provider (Aws::Telemetry::TelemetryProviderBase) — default: Aws::Telemetry::NoOpTelemetryProvider —

    Allows you to provide a telemetry provider, which is used to emit telemetry data. By default, uses ‘NoOpTelemetryProvider` which will not record or emit any telemetry data. The SDK supports the following telemetry providers:

    • OpenTelemetry (OTel) - To use the OTel provider, install and require the

    ‘opentelemetry-sdk` gem and then, pass in an instance of a `Aws::Telemetry::OTelProvider` for telemetry provider.

  • :token_provider (Aws::TokenProvider) —

    Your Bearer token used for authentication. This can be any class that includes and implements ‘Aws::TokenProvider`, or instance of any one of the following classes:

    • ‘Aws::StaticTokenProvider` - Used for configuring static, non-refreshing tokens.

    • ‘Aws::SSOTokenProvider` - Used for loading tokens from AWS SSO using an access token generated from `aws login`.

    When ‘:token_provider` is not configured directly, the `Aws::TokenProviderChain` will be used to search for tokens configured for your profile in shared configuration files.

  • :use_dualstack_endpoint (Boolean) —

    When set to ‘true`, dualstack enabled endpoints (with `.aws` TLD) will be used if available.

  • :use_fips_endpoint (Boolean) —

    When set to ‘true`, fips compatible endpoints will be used if available. When a `fips` region is used, the region is normalized and this config is set to `true`.

  • :validate_params (Boolean) — default: true —

    When ‘true`, request parameters are validated before sending the request.

  • :endpoint_provider (Aws::AutoScaling::EndpointProvider) —

    The endpoint provider used to resolve endpoints. Any object that responds to ‘#resolve_endpoint(parameters)` where `parameters` is a Struct similar to `Aws::AutoScaling::EndpointParameters`.

  • :http_continue_timeout (Float) — default: 1 —

    The number of seconds to wait for a 100-continue response before sending the request body. This option has no effect unless the request has “Expect” header set to “100-continue”. Defaults to ‘nil` which disables this behaviour. This value can safely be set per request on the session.

  • :http_idle_timeout (Float) — default: 5 —

    The number of seconds a connection is allowed to sit idle before it is considered stale. Stale connections are closed and removed from the pool before making a request.

  • :http_open_timeout (Float) — default: 15 —

    The default number of seconds to wait for response data. This value can safely be set per-request on the session.

  • :http_proxy (URI::HTTP, String) —

    A proxy to send requests through. Formatted like ‘proxy.com:123’.

  • :http_read_timeout (Float) — default: 60 —

    The default number of seconds to wait for response data. This value can safely be set per-request on the session.

  • :http_wire_trace (Boolean) — default: false —

    When ‘true`, HTTP debug output will be sent to the `:logger`.

  • :on_chunk_received (Proc) —

    When a Proc object is provided, it will be used as callback when each chunk of the response body is received. It provides three arguments: the chunk, the number of bytes received, and the total number of bytes in the response (or nil if the server did not send a ‘content-length`).

  • :on_chunk_sent (Proc) —

    When a Proc object is provided, it will be used as callback when each chunk of the request body is sent. It provides three arguments: the chunk, the number of bytes read from the body, and the total number of bytes in the body.

  • :raise_response_errors (Boolean) — default: true —

    When ‘true`, response errors are raised.

  • :ssl_ca_bundle (String) —

    Full path to the SSL certificate authority bundle file that should be used when verifying peer certificates. If you do not pass ‘:ssl_ca_bundle` or `:ssl_ca_directory` the the system default will be used if available.

  • :ssl_ca_directory (String) —

    Full path of the directory that contains the unbundled SSL certificate authority files for verifying peer certificates. If you do not pass ‘:ssl_ca_bundle` or `:ssl_ca_directory` the the system default will be used if available.

  • :ssl_ca_store (String) —

    Sets the X509::Store to verify peer certificate.

  • :ssl_cert (OpenSSL::X509::Certificate) —

    Sets a client certificate when creating http connections.

  • :ssl_key (OpenSSL::PKey) —

    Sets a client key when creating http connections.

  • :ssl_timeout (Float) —

    Sets the SSL timeout in seconds

  • :ssl_verify_peer (Boolean) — default: true —

    When ‘true`, SSL peer certificates are verified when establishing a connection.



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# File 'lib/aws-sdk-autoscaling/client.rb', line 473

def initialize(*args)
  super
end

Class Attribute Details

.identifier ⇒ Object (readonly)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/aws-sdk-autoscaling/client.rb', line 7626

def identifier
  @identifier
end

Class Method Details

.errors_module ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/aws-sdk-autoscaling/client.rb', line 7629

def errors_module
  Errors
end

Instance Method Details

#attach_instances(params = {}) ⇒ Struct

Attaches one or more EC2 instances to the specified Auto Scaling group.

When you attach instances, Amazon EC2 Auto Scaling increases the desired capacity of the group by the number of instances being attached. If the number of instances being attached plus the desired capacity of the group exceeds the maximum size of the group, the operation fails.

If there is a Classic Load Balancer attached to your Auto Scaling group, the instances are also registered with the load balancer. If there are target groups attached to your Auto Scaling group, the instances are also registered with the target groups.

For more information, see [Detach or attach instances] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-detach-attach-instances.html

Examples:

Example: To attach an instance to an Auto Scaling group


# This example attaches the specified instance to the specified Auto Scaling group.

resp = client.attach_instances({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_ids: [
    "i-93633f9b", 
  ], 
})

Request syntax with placeholder values


resp = client.attach_instances({
  instance_ids: ["XmlStringMaxLen19"],
  auto_scaling_group_name: "XmlStringMaxLen255", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_ids (Array<String>) —

    The IDs of the instances. You can specify up to 20 instances.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 531

def attach_instances(params = {}, options = {})
  req = build_request(:attach_instances, params)
  req.send_request(options)
end

#attach_load_balancer_target_groups(params = {}) ⇒ Struct

<note markdown=“1”> This API operation is superseded by [AttachTrafficSources], which can attach multiple traffic sources types. We recommend using ‘AttachTrafficSources` to simplify how you manage traffic sources. However, we continue to support `AttachLoadBalancerTargetGroups`. You can use both the original `AttachLoadBalancerTargetGroups` API operation and `AttachTrafficSources` on the same Auto Scaling group.

</note>

Attaches one or more target groups to the specified Auto Scaling group.

This operation is used with the following load balancer types:

  • Application Load Balancer - Operates at the application layer (layer 7) and supports HTTP and HTTPS.

  • Network Load Balancer - Operates at the transport layer (layer 4) and supports TCP, TLS, and UDP.

  • Gateway Load Balancer - Operates at the network layer (layer 3).

To describe the target groups for an Auto Scaling group, call the

DescribeLoadBalancerTargetGroups][2

API. To detach the target group

from the Auto Scaling group, call the

DetachLoadBalancerTargetGroups][3

API.

This operation is additive and does not detach existing target groups or Classic Load Balancers from the Auto Scaling group.

For more information, see [Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeLoadBalancerTargetGroups.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DetachLoadBalancerTargetGroups.html [4]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html

Examples:

Example: To attach a target group to an Auto Scaling group


# This example attaches the specified target group to the specified Auto Scaling group.

resp = client.attach_load_balancer_target_groups({
  auto_scaling_group_name: "my-auto-scaling-group", 
  target_group_arns: [
    "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067", 
  ], 
})

Request syntax with placeholder values


resp = client.attach_load_balancer_target_groups({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  target_group_arns: ["XmlStringMaxLen511"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 614

def attach_load_balancer_target_groups(params = {}, options = {})
  req = build_request(:attach_load_balancer_target_groups, params)
  req.send_request(options)
end

#attach_load_balancers(params = {}) ⇒ Struct

<note markdown=“1”> This API operation is superseded by [docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachTrafficSources.html][1], which can attach multiple traffic sources types. We recommend using ‘AttachTrafficSources` to simplify how you manage traffic sources. However, we continue to support `AttachLoadBalancers`. You can use both the original `AttachLoadBalancers` API operation and `AttachTrafficSources` on the same Auto Scaling group.

</note>

Attaches one or more Classic Load Balancers to the specified Auto Scaling group. Amazon EC2 Auto Scaling registers the running instances with these Classic Load Balancers.

To describe the load balancers for an Auto Scaling group, call the

DescribeLoadBalancers][2

API. To detach a load balancer from the

Auto Scaling group, call the [DetachLoadBalancers] API.

This operation is additive and does not detach existing Classic Load Balancers or target groups from the Auto Scaling group.

For more information, see [Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeLoadBalancers.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DetachLoadBalancers.html [4]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html

Examples:

Example: To attach a load balancer to an Auto Scaling group


# This example attaches the specified load balancer to the specified Auto Scaling group.

resp = client.attach_load_balancers({
  auto_scaling_group_name: "my-auto-scaling-group", 
  load_balancer_names: [
    "my-load-balancer", 
  ], 
})

Request syntax with placeholder values


resp = client.attach_load_balancers({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  load_balancer_names: ["XmlStringMaxLen255"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :load_balancer_names (required, Array<String>) —

    The names of the load balancers. You can specify up to 10 load balancers.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 683

def attach_load_balancers(params = {}, options = {})
  req = build_request(:attach_load_balancers, params)
  req.send_request(options)
end

#attach_traffic_sources(params = {}) ⇒ Struct

Attaches one or more traffic sources to the specified Auto Scaling group.

You can use any of the following as traffic sources for an Auto Scaling group:

  • Application Load Balancer

  • Classic Load Balancer

  • Gateway Load Balancer

  • Network Load Balancer

  • VPC Lattice

This operation is additive and does not detach existing traffic sources from the Auto Scaling group.

After the operation completes, use the [DescribeTrafficSources] API to return details about the state of the attachments between traffic sources and your Auto Scaling group. To detach a traffic source from the Auto Scaling group, call the [DetachTrafficSources] API.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DetachTrafficSources.html

Examples:

Example: To attach a target group to an Auto Scaling group


# This example attaches the specified target group to the specified Auto Scaling group.

resp = client.attach_traffic_sources({
  auto_scaling_group_name: "my-auto-scaling-group", 
  traffic_sources: [
    {
      identifier: "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067", 
    }, 
  ], 
})

resp.to_h outputs the following:
{
}

Request syntax with placeholder values


resp = client.attach_traffic_sources({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  traffic_sources: [ # required
    {
      identifier: "XmlStringMaxLen511", # required
      type: "XmlStringMaxLen511",
    },
  ],
  skip_zonal_shift_validation: false,
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :traffic_sources (required, Array<Types::TrafficSourceIdentifier>) —

    The unique identifiers of one or more traffic sources. You can specify up to 10 traffic sources.

  • :skip_zonal_shift_validation (Boolean) —

    If you enable zonal shift with cross-zone disabled load balancers, capacity could become imbalanced across Availability Zones. To skip the validation, specify ‘true`. For more information, see [Auto Scaling group zonal shift] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-zonal-shift.html

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 772

def attach_traffic_sources(params = {}, options = {})
  req = build_request(:attach_traffic_sources, params)
  req.send_request(options)
end

#batch_delete_scheduled_action(params = {}) ⇒ Types::BatchDeleteScheduledActionAnswer

Deletes one or more scheduled actions for the specified Auto Scaling group.

Examples:

Request syntax with placeholder values


resp = client.batch_delete_scheduled_action({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  scheduled_action_names: ["XmlStringMaxLen255"], # required
})

Response structure


resp.failed_scheduled_actions #=> Array
resp.failed_scheduled_actions[0].scheduled_action_name #=> String
resp.failed_scheduled_actions[0].error_code #=> String
resp.failed_scheduled_actions[0].error_message #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :scheduled_action_names (required, Array<String>) —

    The names of the scheduled actions to delete. The maximum number allowed is 50.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 809

def batch_delete_scheduled_action(params = {}, options = {})
  req = build_request(:batch_delete_scheduled_action, params)
  req.send_request(options)
end

#batch_put_scheduled_update_group_action(params = {}) ⇒ Types::BatchPutScheduledUpdateGroupActionAnswer

Creates or updates one or more scheduled scaling actions for an Auto Scaling group.

Examples:

Request syntax with placeholder values


resp = client.batch_put_scheduled_update_group_action({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  scheduled_update_group_actions: [ # required
    {
      scheduled_action_name: "XmlStringMaxLen255", # required
      start_time: Time.now,
      end_time: Time.now,
      recurrence: "XmlStringMaxLen255",
      min_size: 1,
      max_size: 1,
      desired_capacity: 1,
      time_zone: "XmlStringMaxLen255",
    },
  ],
})

Response structure


resp.failed_scheduled_update_group_actions #=> Array
resp.failed_scheduled_update_group_actions[0].scheduled_action_name #=> String
resp.failed_scheduled_update_group_actions[0].error_code #=> String
resp.failed_scheduled_update_group_actions[0].error_message #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :scheduled_update_group_actions (required, Array<Types::ScheduledUpdateGroupActionRequest>) —

    One or more scheduled actions. The maximum number allowed is 50.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 856

def batch_put_scheduled_update_group_action(params = {}, options = {})
  req = build_request(:batch_put_scheduled_update_group_action, params)
  req.send_request(options)
end

#build_request(operation_name, params = {}) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Parameters:

  • params ({}) (defaults to: {}) 


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# File 'lib/aws-sdk-autoscaling/client.rb', line 7482

def build_request(operation_name, params = {})
  handlers = @handlers.for(operation_name)
  tracer = config.telemetry_provider.tracer_provider.tracer(
    Aws::Telemetry.module_to_tracer_name('Aws::AutoScaling')
  )
  context = Seahorse::Client::RequestContext.new(
    operation_name: operation_name,
    operation: config.api.operation(operation_name),
    client: self,
    params: params,
    config: config,
    tracer: tracer
  )
  context[:gem_name] = 'aws-sdk-autoscaling'
  context[:gem_version] = '1.144.0'
  Seahorse::Client::Request.new(handlers, context)
end

#cancel_instance_refresh(params = {}) ⇒ Types::CancelInstanceRefreshAnswer

Cancels an instance refresh or rollback that is in progress. If an instance refresh or rollback is not in progress, an ‘ActiveInstanceRefreshNotFound` error occurs.

This operation is part of the [instance refresh feature] in Amazon EC2 Auto Scaling, which helps you update instances in your Auto Scaling group after you make configuration changes.

When you cancel an instance refresh, this does not roll back any changes that it made. Use the [RollbackInstanceRefresh] API to roll back instead.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-refresh.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_RollbackInstanceRefresh.html

Examples:

Example: To cancel an instance refresh


# This example cancels an instance refresh operation in progress.

resp = client.cancel_instance_refresh({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  instance_refresh_id: "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b", 
}

Request syntax with placeholder values


resp = client.cancel_instance_refresh({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  wait_for_transitioning_instances: false,
})

Response structure


resp.instance_refresh_id #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :wait_for_transitioning_instances (Boolean) —

    When cancelling an instance refresh, this indicates whether to wait for in-flight launches and terminations to complete. The default is true.

    When set to false, Amazon EC2 Auto Scaling cancels the instance refresh without waiting for any pending launches or terminations to complete.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 923

def cancel_instance_refresh(params = {}, options = {})
  req = build_request(:cancel_instance_refresh, params)
  req.send_request(options)
end

#complete_lifecycle_action(params = {}) ⇒ Struct

Completes the lifecycle action for the specified token or instance with the specified result.

This step is a part of the procedure for adding a lifecycle hook to an Auto Scaling group:

  1. (Optional) Create a launch template or launch configuration with a user data script that runs while an instance is in a wait state due to a lifecycle hook.

  2. (Optional) Create a Lambda function and a rule that allows Amazon EventBridge to invoke your Lambda function when an instance is put into a wait state due to a lifecycle hook.

  3. (Optional) Create a notification target and an IAM role. The target can be either an Amazon SQS queue or an Amazon SNS topic. The role allows Amazon EC2 Auto Scaling to publish lifecycle notifications to the target.

  4. Create the lifecycle hook. Specify whether the hook is used when the instances launch or terminate.

  5. If you need more time, record the lifecycle action heartbeat to keep the instance in a wait state.

  6. **If you finish before the timeout period ends, send a callback by using the [CompleteLifecycleAction] API call.**

For more information, see [Complete a lifecycle action] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CompleteLifecycleAction.html [2]: docs.aws.amazon.com/autoscaling/ec2/userguide/completing-lifecycle-hooks.html

Examples:

Example: To complete the lifecycle action


# This example notifies Auto Scaling that the specified lifecycle action is complete so that it can finish launching or
# terminating the instance.

resp = client.complete_lifecycle_action({
  auto_scaling_group_name: "my-auto-scaling-group", 
  lifecycle_action_result: "CONTINUE", 
  lifecycle_action_token: "bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635", 
  lifecycle_hook_name: "my-lifecycle-hook", 
})

Request syntax with placeholder values


resp = client.complete_lifecycle_action({
  lifecycle_hook_name: "AsciiStringMaxLen255", # required
  auto_scaling_group_name: "ResourceName", # required
  lifecycle_action_token: "LifecycleActionToken",
  lifecycle_action_result: "LifecycleActionResult", # required
  instance_id: "XmlStringMaxLen19",
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :lifecycle_hook_name (required, String) —

    The name of the lifecycle hook.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :lifecycle_action_token (String) —

    A universally unique identifier (UUID) that identifies a specific lifecycle action associated with an instance. Amazon EC2 Auto Scaling sends this token to the notification target you specified when you created the lifecycle hook.

  • :lifecycle_action_result (required, String) —

    The action for the group to take. You can specify either ‘CONTINUE` or `ABANDON`.

  • :instance_id (String) —

    The ID of the instance.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 1012

def complete_lifecycle_action(params = {}, options = {})
  req = build_request(:complete_lifecycle_action, params)
  req.send_request(options)
end

#create_auto_scaling_group(params = {}) ⇒ Struct

**We strongly recommend using a launch template when calling this operation to ensure full functionality for Amazon EC2 Auto Scaling and Amazon EC2.**

Creates an Auto Scaling group with the specified name and attributes.

If you exceed your maximum limit of Auto Scaling groups, the call fails. To query this limit, call the [DescribeAccountLimits] API. For information about updating this limit, see [Quotas for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

If you’re new to Amazon EC2 Auto Scaling, see the introductory tutorials in [Get started with Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

Every Auto Scaling group has three size properties (‘DesiredCapacity`, `MaxSize`, and `MinSize`). Usually, you set these sizes based on a specific number of instances. However, if you configure a mixed instances policy that defines weights for the instance types, you must specify these sizes with the same units that you use for weighting instances.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeAccountLimits.html [2]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-quotas.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/get-started-with-ec2-auto-scaling.html

Examples:

Example: To create an Auto Scaling group


# This example creates an Auto Scaling group.

resp = client.create_auto_scaling_group({
  auto_scaling_group_name: "my-auto-scaling-group", 
  default_instance_warmup: 120, 
  launch_template: {
    launch_template_name: "my-template-for-auto-scaling", 
    version: "$Default", 
  }, 
  max_instance_lifetime: 2592000, 
  max_size: 3, 
  min_size: 1, 
  vpc_zone_identifier: "subnet-057fa0918fEXAMPLE", 
})

Example: To create an Auto Scaling group with an attached target group


# This example creates an Auto Scaling group and attaches the specified target group.

resp = client.create_auto_scaling_group({
  auto_scaling_group_name: "my-auto-scaling-group", 
  health_check_grace_period: 300, 
  health_check_type: "ELB", 
  launch_template: {
    launch_template_name: "my-template-for-auto-scaling", 
    version: "$Default", 
  }, 
  max_size: 3, 
  min_size: 1, 
  target_group_arns: [
    "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067", 
  ], 
  vpc_zone_identifier: "subnet-057fa0918fEXAMPLE, subnet-610acd08EXAMPLE", 
})

Example: To create an Auto Scaling group with a mixed instances policy


# This example creates an Auto Scaling group with a mixed instances policy. It specifies the c5.large, c5a.large, and
# c6g.large instance types and defines a different launch template for the c6g.large instance type.

resp = client.create_auto_scaling_group({
  auto_scaling_group_name: "my-asg", 
  desired_capacity: 3, 
  max_size: 5, 
  min_size: 1, 
  mixed_instances_policy: {
    instances_distribution: {
      on_demand_base_capacity: 1, 
      on_demand_percentage_above_base_capacity: 50, 
      spot_allocation_strategy: "price-capacity-optimized", 
    }, 
    launch_template: {
      launch_template_specification: {
        launch_template_name: "my-launch-template-for-x86", 
        version: "$Default", 
      }, 
      overrides: [
        {
          instance_type: "c6g.large", 
          launch_template_specification: {
            launch_template_name: "my-launch-template-for-arm", 
            version: "$Default", 
          }, 
        }, 
        {
          instance_type: "c5.large", 
        }, 
        {
          instance_type: "c5a.large", 
        }, 
      ], 
    }, 
  }, 
  vpc_zone_identifier: "subnet-057fa0918fEXAMPLE, subnet-610acd08EXAMPLE", 
})

Example: To create an Auto Scaling group using attribute-based instance type selection


# This example creates an Auto Scaling group using attribute-based instance type selection. It requires the instance types
# to have a minimum of four vCPUs and a maximum of eight vCPUs, a minimum of 16,384 MiB of memory, and an Intel
# manufactured CPU.

resp = client.create_auto_scaling_group({
  auto_scaling_group_name: "my-asg", 
  desired_capacity: 4, 
  desired_capacity_type: "units", 
  max_size: 100, 
  min_size: 0, 
  mixed_instances_policy: {
    instances_distribution: {
      on_demand_percentage_above_base_capacity: 50, 
      spot_allocation_strategy: "price-capacity-optimized", 
    }, 
    launch_template: {
      launch_template_specification: {
        launch_template_name: "my-template-for-auto-scaling", 
        version: "$Default", 
      }, 
      overrides: [
        {
          instance_requirements: {
            cpu_manufacturers: [
              "intel", 
            ], 
            memory_mi_b: {
              min: 16384, 
            }, 
            v_cpu_count: {
              max: 8, 
              min: 4, 
            }, 
          }, 
        }, 
      ], 
    }, 
  }, 
  vpc_zone_identifier: "subnet-057fa0918fEXAMPLE, subnet-610acd08EXAMPLE", 
})

Request syntax with placeholder values


resp = client.create_auto_scaling_group({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  launch_configuration_name: "XmlStringMaxLen255",
  launch_template: {
    launch_template_id: "XmlStringMaxLen255",
    launch_template_name: "LaunchTemplateName",
    version: "XmlStringMaxLen255",
  },
  mixed_instances_policy: {
    launch_template: {
      launch_template_specification: {
        launch_template_id: "XmlStringMaxLen255",
        launch_template_name: "LaunchTemplateName",
        version: "XmlStringMaxLen255",
      },
      overrides: [
        {
          instance_type: "XmlStringMaxLen255",
          weighted_capacity: "XmlStringMaxLen32",
          launch_template_specification: {
            launch_template_id: "XmlStringMaxLen255",
            launch_template_name: "LaunchTemplateName",
            version: "XmlStringMaxLen255",
          },
          instance_requirements: {
            v_cpu_count: { # required
              min: 1, # required
              max: 1,
            },
            memory_mi_b: { # required
              min: 1, # required
              max: 1,
            },
            cpu_manufacturers: ["intel"], # accepts intel, amd, amazon-web-services, apple
            memory_gi_b_per_v_cpu: {
              min: 1.0,
              max: 1.0,
            },
            excluded_instance_types: ["ExcludedInstance"],
            instance_generations: ["current"], # accepts current, previous
            spot_max_price_percentage_over_lowest_price: 1,
            max_spot_price_as_percentage_of_optimal_on_demand_price: 1,
            on_demand_max_price_percentage_over_lowest_price: 1,
            bare_metal: "included", # accepts included, excluded, required
            burstable_performance: "included", # accepts included, excluded, required
            require_hibernate_support: false,
            network_interface_count: {
              min: 1,
              max: 1,
            },
            local_storage: "included", # accepts included, excluded, required
            local_storage_types: ["hdd"], # accepts hdd, ssd
            total_local_storage_gb: {
              min: 1.0,
              max: 1.0,
            },
            baseline_ebs_bandwidth_mbps: {
              min: 1,
              max: 1,
            },
            accelerator_types: ["gpu"], # accepts gpu, fpga, inference
            accelerator_count: {
              min: 1,
              max: 1,
            },
            accelerator_manufacturers: ["nvidia"], # accepts nvidia, amd, amazon-web-services, xilinx
            accelerator_names: ["a100"], # accepts a100, v100, k80, t4, m60, radeon-pro-v520, vu9p
            accelerator_total_memory_mi_b: {
              min: 1,
              max: 1,
            },
            network_bandwidth_gbps: {
              min: 1.0,
              max: 1.0,
            },
            allowed_instance_types: ["AllowedInstanceType"],
            baseline_performance_factors: {
              cpu: {
                references: [
                  {
                    instance_family: "String",
                  },
                ],
              },
            },
          },
        },
      ],
    },
    instances_distribution: {
      on_demand_allocation_strategy: "XmlString",
      on_demand_base_capacity: 1,
      on_demand_percentage_above_base_capacity: 1,
      spot_allocation_strategy: "XmlString",
      spot_instance_pools: 1,
      spot_max_price: "MixedInstanceSpotPrice",
    },
  },
  instance_id: "XmlStringMaxLen19",
  min_size: 1, # required
  max_size: 1, # required
  desired_capacity: 1,
  default_cooldown: 1,
  availability_zones: ["XmlStringMaxLen255"],
  load_balancer_names: ["XmlStringMaxLen255"],
  target_group_arns: ["XmlStringMaxLen511"],
  health_check_type: "XmlStringMaxLen32",
  health_check_grace_period: 1,
  placement_group: "XmlStringMaxLen255",
  vpc_zone_identifier: "XmlStringMaxLen5000",
  termination_policies: ["XmlStringMaxLen1600"],
  new_instances_protected_from_scale_in: false,
  capacity_rebalance: false,
  lifecycle_hook_specification_list: [
    {
      lifecycle_hook_name: "AsciiStringMaxLen255", # required
      lifecycle_transition: "LifecycleTransition", # required
      notification_metadata: "AnyPrintableAsciiStringMaxLen4000",
      heartbeat_timeout: 1,
      default_result: "LifecycleActionResult",
      notification_target_arn: "NotificationTargetResourceName",
      role_arn: "XmlStringMaxLen255",
    },
  ],
  tags: [
    {
      resource_id: "XmlString",
      resource_type: "XmlString",
      key: "TagKey", # required
      value: "TagValue",
      propagate_at_launch: false,
    },
  ],
  service_linked_role_arn: "ResourceName",
  max_instance_lifetime: 1,
  context: "Context",
  desired_capacity_type: "XmlStringMaxLen255",
  default_instance_warmup: 1,
  traffic_sources: [
    {
      identifier: "XmlStringMaxLen511", # required
      type: "XmlStringMaxLen511",
    },
  ],
  instance_maintenance_policy: {
    min_healthy_percentage: 1,
    max_healthy_percentage: 1,
  },
  availability_zone_distribution: {
    capacity_distribution_strategy: "balanced-only", # accepts balanced-only, balanced-best-effort
  },
  availability_zone_impairment_policy: {
    zonal_shift_enabled: false,
    impaired_zone_health_check_behavior: "ReplaceUnhealthy", # accepts ReplaceUnhealthy, IgnoreUnhealthy
  },
  skip_zonal_shift_validation: false,
  capacity_reservation_specification: {
    capacity_reservation_preference: "capacity-reservations-only", # accepts capacity-reservations-only, capacity-reservations-first, none, default
    capacity_reservation_target: {
      capacity_reservation_ids: ["AsciiStringMaxLen255"],
      capacity_reservation_resource_group_arns: ["ResourceName"],
    },
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group. This name must be unique per Region per account.

    The name can contain any ASCII character 33 to 126 including most punctuation characters, digits, and upper and lowercased letters.

    <note markdown=“1”> You cannot use a colon (:) in the name.

    </note>
  • :launch_configuration_name (String) —

    The name of the launch configuration to use to launch instances.

    Conditional: You must specify either a launch template (‘LaunchTemplate` or `MixedInstancesPolicy`) or a launch configuration (`LaunchConfigurationName` or `InstanceId`).

  • :launch_template (Types::LaunchTemplateSpecification) —

    Information used to specify the launch template and version to use to launch instances.

    Conditional: You must specify either a launch template (‘LaunchTemplate` or `MixedInstancesPolicy`) or a launch configuration (`LaunchConfigurationName` or `InstanceId`).

    <note markdown=“1”> The launch template that is specified must be configured for use with an Auto Scaling group. For more information, see [Create a launch template for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    </note>

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-template.html

  • :mixed_instances_policy (Types::MixedInstancesPolicy) —

    The mixed instances policy. For more information, see [Auto Scaling groups with multiple instance types and purchase options] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-mixed-instances-groups.html

  • :instance_id (String) —

    The ID of the instance used to base the launch configuration on. If specified, Amazon EC2 Auto Scaling uses the configuration values from the specified instance to create a new launch configuration. To get the instance ID, use the Amazon EC2 [DescribeInstances] API operation. For more information, see [Create an Auto Scaling group using parameters from an existing instance] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeInstances.html [2]: docs.aws.amazon.com/autoscaling/ec2/userguide/create-asg-from-instance.html

  • :min_size (required, Integer) —

    The minimum size of the group.

  • :max_size (required, Integer) —

    The maximum size of the group.

    <note markdown=“1”> With a mixed instances policy that uses instance weighting, Amazon EC2 Auto Scaling may need to go above ‘MaxSize` to meet your capacity requirements. In this event, Amazon EC2 Auto Scaling will never go above `MaxSize` by more than your largest instance weight (weights that define how many units each instance contributes to the desired capacity of the group).

    </note>
  • :desired_capacity (Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group at the time of its creation and the capacity it attempts to maintain. It can scale beyond this capacity if you configure auto scaling. This number must be greater than or equal to the minimum size of the group and less than or equal to the maximum size of the group. If you do not specify a desired capacity, the default is the minimum size of the group.

  • :default_cooldown (Integer) —

    *Only needed if you use simple scaling policies.*

    The amount of time, in seconds, between one scaling activity ending and another one starting due to simple scaling policies. For more information, see [Scaling cooldowns for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    Default: ‘300` seconds

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-cooldowns.html

  • :availability_zones (Array<String>) —

    A list of Availability Zones where instances in the Auto Scaling group can be created. Used for launching into the default VPC subnet in each Availability Zone when not using the ‘VPCZoneIdentifier` property, or for attaching a network interface when an existing network interface ID is specified in a launch template.

  • :load_balancer_names (Array<String>) —

    A list of Classic Load Balancers associated with this Auto Scaling group. For Application Load Balancers, Network Load Balancers, and Gateway Load Balancers, specify the ‘TargetGroupARNs` property instead.

  • :target_group_arns (Array<String>) —

    The Amazon Resource Names (ARN) of the Elastic Load Balancing target groups to associate with the Auto Scaling group. Instances are registered as targets with the target groups. The target groups receive incoming traffic and route requests to one or more registered targets. For more information, see [Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html

  • :health_check_type (String) —

    A comma-separated value string of one or more health check types.

    The valid values are ‘EC2`, `EBS`, `ELB`, and `VPC_LATTICE`. `EC2` is the default health check and cannot be disabled. For more information, see [Health checks for instances in an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    Only specify ‘EC2` if you must clear a value that was previously set.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-health-checks.html

  • :health_check_grace_period (Integer) —

    The amount of time, in seconds, that Amazon EC2 Auto Scaling waits before checking the health status of an EC2 instance that has come into service and marking it unhealthy due to a failed health check. This is useful if your instances do not immediately pass their health checks after they enter the ‘InService` state. For more information, see [Set the health check grace period for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    Default: ‘0` seconds

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/health-check-grace-period.html

  • :placement_group (String) —

    The name of the placement group into which to launch your instances. For more information, see [Placement groups] in the *Amazon EC2 User Guide*.

    <note markdown=“1”> A cluster placement group is a logical grouping of instances within a single Availability Zone. You cannot specify multiple Availability Zones and a cluster placement group.

    </note>

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

  • :vpc_zone_identifier (String) —

    A comma-separated list of subnet IDs for a virtual private cloud (VPC) where instances in the Auto Scaling group can be created. If you specify ‘VPCZoneIdentifier` with `AvailabilityZones`, the subnets that you specify must reside in those Availability Zones.

  • :termination_policies (Array<String>) —

    A policy or a list of policies that are used to select the instance to terminate. These policies are executed in the order that you list them. For more information, see [Configure termination policies for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    Valid values: ‘Default` | `AllocationStrategy` | `ClosestToNextInstanceHour` | `NewestInstance` | `OldestInstance` | `OldestLaunchConfiguration` | `OldestLaunchTemplate` | `arn:aws:lambda:region:account-id:function:my-function:my-alias`

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-termination-policies.html

  • :new_instances_protected_from_scale_in (Boolean) —

    Indicates whether newly launched instances are protected from termination by Amazon EC2 Auto Scaling when scaling in. For more information about preventing instances from terminating on scale in, see [Use instance scale-in protection] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-instance-protection.html

  • :capacity_rebalance (Boolean) —

    Indicates whether Capacity Rebalancing is enabled. Otherwise, Capacity Rebalancing is disabled. When you turn on Capacity Rebalancing, Amazon EC2 Auto Scaling attempts to launch a Spot Instance whenever Amazon EC2 notifies that a Spot Instance is at an elevated risk of interruption. After launching a new instance, it then terminates an old instance. For more information, see [Use Capacity Rebalancing to handle Amazon EC2 Spot Interruptions] in the in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-capacity-rebalancing.html

  • :lifecycle_hook_specification_list (Array<Types::LifecycleHookSpecification>) —

    One or more lifecycle hooks to add to the Auto Scaling group before instances are launched.

  • :tags (Array<Types::Tag>) —

    One or more tags. You can tag your Auto Scaling group and propagate the tags to the Amazon EC2 instances it launches. Tags are not propagated to Amazon EBS volumes. To add tags to Amazon EBS volumes, specify the tags in a launch template but use caution. If the launch template specifies an instance tag with a key that is also specified for the Auto Scaling group, Amazon EC2 Auto Scaling overrides the value of that instance tag with the value specified by the Auto Scaling group. For more information, see [Tag Auto Scaling groups and instances] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-tagging.html

  • :service_linked_role_arn (String) —

    The Amazon Resource Name (ARN) of the service-linked role that the Auto Scaling group uses to call other Amazon Web Services service on your behalf. By default, Amazon EC2 Auto Scaling uses a service-linked role named ‘AWSServiceRoleForAutoScaling`, which it creates if it does not exist. For more information, see [Service-linked roles] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-service-linked-role.html

  • :max_instance_lifetime (Integer) —

    The maximum amount of time, in seconds, that an instance can be in service. The default is null. If specified, the value must be either 0 or a number equal to or greater than 86,400 seconds (1 day). For more information, see [Replace Auto Scaling instances based on maximum instance lifetime] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-max-instance-lifetime.html

  • :context (String) —

    Reserved.

  • :desired_capacity_type (String) —

    The unit of measurement for the value specified for desired capacity. Amazon EC2 Auto Scaling supports ‘DesiredCapacityType` for attribute-based instance type selection only. For more information, see [Create a mixed instances group using attribute-based instance type selection] in the *Amazon EC2 Auto Scaling User Guide*.

    By default, Amazon EC2 Auto Scaling specifies ‘units`, which translates into number of instances.

    Valid values: ‘units` | `vcpu` | `memory-mib`

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/create-mixed-instances-group-attribute-based-instance-type-selection.html

  • :default_instance_warmup (Integer) —

    The amount of time, in seconds, until a new instance is considered to have finished initializing and resource consumption to become stable after it enters the ‘InService` state.

    During an instance refresh, Amazon EC2 Auto Scaling waits for the warm-up period after it replaces an instance before it moves on to replacing the next instance. Amazon EC2 Auto Scaling also waits for the warm-up period before aggregating the metrics for new instances with existing instances in the Amazon CloudWatch metrics that are used for scaling, resulting in more reliable usage data. For more information, see [Set the default instance warmup for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    To manage various warm-up settings at the group level, we recommend that you set the default instance warmup, *even if it is set to 0 seconds*. To remove a value that you previously set, include the property but specify ‘-1` for the value. However, we strongly recommend keeping the default instance warmup enabled by specifying a value of `0` or other nominal value.

    Default: None

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-default-instance-warmup.html

  • :traffic_sources (Array<Types::TrafficSourceIdentifier>) —

    The list of traffic sources to attach to this Auto Scaling group. You can use any of the following as traffic sources for an Auto Scaling group: Classic Load Balancer, Application Load Balancer, Gateway Load Balancer, Network Load Balancer, and VPC Lattice.

  • :instance_maintenance_policy (Types::InstanceMaintenancePolicy) —

    An instance maintenance policy. For more information, see [Set instance maintenance policy] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-instance-maintenance-policy.html

  • :availability_zone_distribution (Types::AvailabilityZoneDistribution) —

    The instance capacity distribution across Availability Zones.

  • :availability_zone_impairment_policy (Types::AvailabilityZoneImpairmentPolicy) —

    The policy for Availability Zone impairment.

  • :skip_zonal_shift_validation (Boolean) —

    If you enable zonal shift with cross-zone disabled load balancers, capacity could become imbalanced across Availability Zones. To skip the validation, specify ‘true`. For more information, see [Auto Scaling group zonal shift] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-zonal-shift.html

  • :capacity_reservation_specification (Types::CapacityReservationSpecification) —

    The capacity reservation specification for the Auto Scaling group.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 1678

def create_auto_scaling_group(params = {}, options = {})
  req = build_request(:create_auto_scaling_group, params)
  req.send_request(options)
end

#create_launch_configuration(params = {}) ⇒ Struct

Creates a launch configuration.

If you exceed your maximum limit of launch configurations, the call fails. To query this limit, call the [DescribeAccountLimits] API. For information about updating this limit, see [Quotas for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

For more information, see [Launch configurations] in the *Amazon EC2 Auto Scaling User Guide*.

<note markdown=“1”> Amazon EC2 Auto Scaling configures instances launched as part of an Auto Scaling group using either a launch template or a launch configuration. We strongly recommend that you do not use launch configurations. They do not provide full functionality for Amazon EC2 Auto Scaling or Amazon EC2. For information about using launch templates, see [Launch templates] in the *Amazon EC2 Auto Scaling User Guide*.

</note>

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeAccountLimits.html [2]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-quotas.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/launch-configurations.html [4]: docs.aws.amazon.com/autoscaling/ec2/userguide/launch-templates.html

Examples:

Example: To create a launch configuration


# This example creates a launch configuration.

resp = client.create_launch_configuration({
  iam_instance_profile: "my-iam-role", 
  image_id: "ami-12345678", 
  instance_type: "m3.medium", 
  launch_configuration_name: "my-launch-config", 
  security_groups: [
    "sg-eb2af88e", 
  ], 
})

Request syntax with placeholder values


resp = client.create_launch_configuration({
  launch_configuration_name: "XmlStringMaxLen255", # required
  image_id: "XmlStringMaxLen255",
  key_name: "XmlStringMaxLen255",
  security_groups: ["XmlString"],
  classic_link_vpc_id: "XmlStringMaxLen255",
  classic_link_vpc_security_groups: ["XmlStringMaxLen255"],
  user_data: "XmlStringUserData",
  instance_id: "XmlStringMaxLen19",
  instance_type: "XmlStringMaxLen255",
  kernel_id: "XmlStringMaxLen255",
  ramdisk_id: "XmlStringMaxLen255",
  block_device_mappings: [
    {
      virtual_name: "XmlStringMaxLen255",
      device_name: "XmlStringMaxLen255", # required
      ebs: {
        snapshot_id: "XmlStringMaxLen255",
        volume_size: 1,
        volume_type: "BlockDeviceEbsVolumeType",
        delete_on_termination: false,
        iops: 1,
        encrypted: false,
        throughput: 1,
      },
      no_device: false,
    },
  ],
  instance_monitoring: {
    enabled: false,
  },
  spot_price: "SpotPrice",
  iam_instance_profile: "XmlStringMaxLen1600",
  ebs_optimized: false,
  associate_public_ip_address: false,
  placement_tenancy: "XmlStringMaxLen64",
  metadata_options: {
    http_tokens: "optional", # accepts optional, required
    http_put_response_hop_limit: 1,
    http_endpoint: "disabled", # accepts disabled, enabled
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :launch_configuration_name (required, String) —

    The name of the launch configuration. This name must be unique per Region per account.

  • :image_id (String) —

    The ID of the Amazon Machine Image (AMI) that was assigned during registration. For more information, see [Find a Linux AMI] in the *Amazon EC2 User Guide*.

    If you specify ‘InstanceId`, an `ImageId` is not required.

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/finding-an-ami.html

  • :key_name (String) —

    The name of the key pair. For more information, see [Amazon EC2 key pairs and Amazon EC2 instances] in the *Amazon EC2 User Guide*.

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html

  • :security_groups (Array<String>) —

    A list that contains the security group IDs to assign to the instances in the Auto Scaling group. For more information, see [Control traffic to your Amazon Web Services resources using security groups] in the *Amazon Virtual Private Cloud User Guide*.

    [1]: docs.aws.amazon.com/vpc/latest/userguide/vpc-security-groups.html

  • :classic_link_vpc_id (String) —

    Available for backward compatibility.

  • :classic_link_vpc_security_groups (Array<String>) —

    Available for backward compatibility.

  • :user_data (String) —

    The user data to make available to the launched EC2 instances. For more information, see [Instance metadata and user data] (Linux) and

    Instance metadata and user data][2

    (Windows). If you are using a

    command line tool, base64-encoding is performed for you, and you can load the text from a file. Otherwise, you must provide base64-encoded text. User data is limited to 16 KB.

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html [2]: docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ec2-instance-metadata.html

  • :instance_id (String) —

    The ID of the instance to use to create the launch configuration. The new launch configuration derives attributes from the instance, except for the block device mapping.

    To create a launch configuration with a block device mapping or override any other instance attributes, specify them as part of the same request.

    For more information, see [Create a launch configuration] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-config.html

  • :instance_type (String) —

    Specifies the instance type of the EC2 instance. For information about available instance types, see [Available instance types] in the *Amazon EC2 User Guide*.

    If you specify ‘InstanceId`, an `InstanceType` is not required.

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html#AvailableInstanceTypes

  • :kernel_id (String) —

    The ID of the kernel associated with the AMI.

    <note markdown=“1”> We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see [User provided kernels] in the *Amazon EC2 User Guide*.

    </note>

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/UserProvidedKernels.html

  • :ramdisk_id (String) —

    The ID of the RAM disk to select.

    <note markdown=“1”> We recommend that you use PV-GRUB instead of kernels and RAM disks. For more information, see [User provided kernels] in the *Amazon EC2 User Guide*.

    </note>

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/UserProvidedKernels.html

  • :block_device_mappings (Array<Types::BlockDeviceMapping>) —

    The block device mapping entries that define the block devices to attach to the instances at launch. By default, the block devices specified in the block device mapping for the AMI are used. For more information, see [Block device mappings] in the *Amazon EC2 User Guide*.

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html

  • :instance_monitoring (Types::InstanceMonitoring) —

    Controls whether instances in this group are launched with detailed (‘true`) or basic (`false`) monitoring.

    The default value is ‘true` (enabled).

    When detailed monitoring is enabled, Amazon CloudWatch generates metrics every minute and your account is charged a fee. When you disable detailed monitoring, CloudWatch generates metrics every 5 minutes. For more information, see [Configure monitoring for Auto Scaling instances] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/latest/userguide/enable-as-instance-metrics.html

  • :spot_price (String) —

    The maximum hourly price to be paid for any Spot Instance launched to fulfill the request. Spot Instances are launched when the price you specify exceeds the current Spot price. For more information, see [Request Spot Instances for fault-tolerant and flexible applications] in the *Amazon EC2 Auto Scaling User Guide*.

    Valid Range: Minimum value of 0.001

    <note markdown=“1”> When you change your maximum price by creating a new launch configuration, running instances will continue to run as long as the maximum price for those running instances is higher than the current Spot price.

    </note>

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/launch-template-spot-instances.html

  • :iam_instance_profile (String) —

    The name or the Amazon Resource Name (ARN) of the instance profile associated with the IAM role for the instance. The instance profile contains the IAM role. For more information, see [IAM role for applications that run on Amazon EC2 instances] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/us-iam-role.html

  • :ebs_optimized (Boolean) —

    Specifies whether the launch configuration is optimized for EBS I/O (‘true`) or not (`false`). The optimization provides dedicated throughput to Amazon EBS and an optimized configuration stack to provide optimal I/O performance. This optimization is not available with all instance types. Additional fees are incurred when you enable EBS optimization for an instance type that is not EBS-optimized by default. For more information, see [Amazon EBS-optimized instances] in the *Amazon EC2 User Guide*.

    The default value is ‘false`.

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html

  • :associate_public_ip_address (Boolean) —

    Specifies whether to assign a public IPv4 address to the group’s instances. If the instance is launched into a default subnet, the default is to assign a public IPv4 address, unless you disabled the option to assign a public IPv4 address on the subnet. If the instance is launched into a nondefault subnet, the default is not to assign a public IPv4 address, unless you enabled the option to assign a public IPv4 address on the subnet.

    If you specify ‘true`, each instance in the Auto Scaling group receives a unique public IPv4 address. For more information, see [Provide network connectivity for your Auto Scaling instances using Amazon VPC] in the *Amazon EC2 Auto Scaling User Guide*.

    If you specify this property, you must specify at least one subnet for ‘VPCZoneIdentifier` when you create your group.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-in-vpc.html

  • :placement_tenancy (String) —

    The tenancy of the instance, either ‘default` or `dedicated`. An instance with `dedicated` tenancy runs on isolated, single-tenant hardware and can only be launched into a VPC. To launch dedicated instances into a shared tenancy VPC (a VPC with the instance placement tenancy attribute set to `default`), you must set the value of this property to `dedicated`.

    If you specify ‘PlacementTenancy`, you must specify at least one subnet for `VPCZoneIdentifier` when you create your group.

    Valid values: ‘default` | `dedicated`

  • :metadata_options (Types::InstanceMetadataOptions) —

    The metadata options for the instances. For more information, see

    Configure the instance metadata options][1

    in the *Amazon EC2 Auto

    Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/create-launch-config.html#launch-configurations-imds

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 1998

def create_launch_configuration(params = {}, options = {})
  req = build_request(:create_launch_configuration, params)
  req.send_request(options)
end

#create_or_update_tags(params = {}) ⇒ Struct

Creates or updates tags for the specified Auto Scaling group.

When you specify a tag with a key that already exists, the operation overwrites the previous tag definition, and you do not get an error message.

For more information, see [Tag Auto Scaling groups and instances] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-tagging.html

Examples:

Example: To create or update tags for an Auto Scaling group


# This example adds two tags to the specified Auto Scaling group.

resp = client.create_or_update_tags({
  tags: [
    {
      key: "Role", 
      propagate_at_launch: true, 
      resource_id: "my-auto-scaling-group", 
      resource_type: "auto-scaling-group", 
      value: "WebServer", 
    }, 
    {
      key: "Dept", 
      propagate_at_launch: true, 
      resource_id: "my-auto-scaling-group", 
      resource_type: "auto-scaling-group", 
      value: "Research", 
    }, 
  ], 
})

Request syntax with placeholder values


resp = client.create_or_update_tags({
  tags: [ # required
    {
      resource_id: "XmlString",
      resource_type: "XmlString",
      key: "TagKey", # required
      value: "TagValue",
      propagate_at_launch: false,
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :tags (required, Array<Types::Tag>) —

    One or more tags.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2063

def create_or_update_tags(params = {}, options = {})
  req = build_request(:create_or_update_tags, params)
  req.send_request(options)
end

#delete_auto_scaling_group(params = {}) ⇒ Struct

Deletes the specified Auto Scaling group.

If the group has instances or scaling activities in progress, you must specify the option to force the deletion in order for it to succeed. The force delete operation will also terminate the EC2 instances. If the group has a warm pool, the force delete option also deletes the warm pool.

To remove instances from the Auto Scaling group before deleting it, call the [DetachInstances] API with the list of instances and the option to decrement the desired capacity. This ensures that Amazon EC2 Auto Scaling does not launch replacement instances.

To terminate all instances before deleting the Auto Scaling group, call the [UpdateAutoScalingGroup] API and set the minimum size and desired capacity of the Auto Scaling group to zero.

If the group has scaling policies, deleting the group deletes the policies, the underlying alarm actions, and any alarm that no longer has an associated action.

For more information, see [Delete your Auto Scaling infrastructure] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DetachInstances.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_UpdateAutoScalingGroup.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-process-shutdown.html

Examples:

Example: To delete an Auto Scaling group


# This example deletes the specified Auto Scaling group.

resp = client.delete_auto_scaling_group({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

Example: To delete an Auto Scaling group and all its instances


# This example deletes the specified Auto Scaling group and all its instances.

resp = client.delete_auto_scaling_group({
  auto_scaling_group_name: "my-auto-scaling-group", 
  force_delete: true, 
})

Request syntax with placeholder values


resp = client.delete_auto_scaling_group({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  force_delete: false,
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :force_delete (Boolean) —

    Specifies that the group is to be deleted along with all instances associated with the group, without waiting for all instances to be terminated. This action also deletes any outstanding lifecycle actions associated with the group.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2138

def delete_auto_scaling_group(params = {}, options = {})
  req = build_request(:delete_auto_scaling_group, params)
  req.send_request(options)
end

#delete_launch_configuration(params = {}) ⇒ Struct

Deletes the specified launch configuration.

The launch configuration must not be attached to an Auto Scaling group. When this call completes, the launch configuration is no longer available for use.

Examples:

Example: To delete a launch configuration


# This example deletes the specified launch configuration.

resp = client.delete_launch_configuration({
  launch_configuration_name: "my-launch-config", 
})

Request syntax with placeholder values


resp = client.delete_launch_configuration({
  launch_configuration_name: "XmlStringMaxLen255", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :launch_configuration_name (required, String) —

    The name of the launch configuration.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2173

def delete_launch_configuration(params = {}, options = {})
  req = build_request(:delete_launch_configuration, params)
  req.send_request(options)
end

#delete_lifecycle_hook(params = {}) ⇒ Struct

Deletes the specified lifecycle hook.

If there are any outstanding lifecycle actions, they are completed first (‘ABANDON` for launching instances, `CONTINUE` for terminating instances).

Examples:

Example: To delete a lifecycle hook


# This example deletes the specified lifecycle hook.

resp = client.delete_lifecycle_hook({
  auto_scaling_group_name: "my-auto-scaling-group", 
  lifecycle_hook_name: "my-lifecycle-hook", 
})

Request syntax with placeholder values


resp = client.delete_lifecycle_hook({
  lifecycle_hook_name: "AsciiStringMaxLen255", # required
  auto_scaling_group_name: "XmlStringMaxLen255", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :lifecycle_hook_name (required, String) —

    The name of the lifecycle hook.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2213

def delete_lifecycle_hook(params = {}, options = {})
  req = build_request(:delete_lifecycle_hook, params)
  req.send_request(options)
end

#delete_notification_configuration(params = {}) ⇒ Struct

Deletes the specified notification.

Examples:

Example: To delete an Auto Scaling notification


# This example deletes the specified notification from the specified Auto Scaling group.

resp = client.delete_notification_configuration({
  auto_scaling_group_name: "my-auto-scaling-group", 
  topic_arn: "arn:aws:sns:us-west-2:123456789012:my-sns-topic", 
})

Request syntax with placeholder values


resp = client.delete_notification_configuration({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  topic_arn: "XmlStringMaxLen255", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :topic_arn (required, String) —

    The Amazon Resource Name (ARN) of the Amazon SNS topic.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2249

def delete_notification_configuration(params = {}, options = {})
  req = build_request(:delete_notification_configuration, params)
  req.send_request(options)
end

#delete_policy(params = {}) ⇒ Struct

Deletes the specified scaling policy.

Deleting either a step scaling policy or a simple scaling policy deletes the underlying alarm action, but does not delete the alarm, even if it no longer has an associated action.

For more information, see [Delete a scaling policy] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/deleting-scaling-policy.html

Examples:

Example: To delete an Auto Scaling policy


# This example deletes the specified Auto Scaling policy.

resp = client.delete_policy({
  auto_scaling_group_name: "my-auto-scaling-group", 
  policy_name: "my-step-scale-out-policy", 
})

Request syntax with placeholder values


resp = client.delete_policy({
  auto_scaling_group_name: "XmlStringMaxLen255",
  policy_name: "ResourceName", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (String) —

    The name of the Auto Scaling group.

  • :policy_name (required, String) —

    The name or Amazon Resource Name (ARN) of the policy.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2296

def delete_policy(params = {}, options = {})
  req = build_request(:delete_policy, params)
  req.send_request(options)
end

#delete_scheduled_action(params = {}) ⇒ Struct

Deletes the specified scheduled action.

Examples:

Example: To delete a scheduled action from an Auto Scaling group


# This example deletes the specified scheduled action from the specified Auto Scaling group.

resp = client.delete_scheduled_action({
  auto_scaling_group_name: "my-auto-scaling-group", 
  scheduled_action_name: "my-scheduled-action", 
})

Request syntax with placeholder values


resp = client.delete_scheduled_action({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  scheduled_action_name: "XmlStringMaxLen255", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :scheduled_action_name (required, String) —

    The name of the action to delete.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2332

def delete_scheduled_action(params = {}, options = {})
  req = build_request(:delete_scheduled_action, params)
  req.send_request(options)
end

#delete_tags(params = {}) ⇒ Struct

Deletes the specified tags.

Examples:

Example: To delete a tag from an Auto Scaling group


# This example deletes the specified tag from the specified Auto Scaling group.

resp = client.delete_tags({
  tags: [
    {
      key: "Dept", 
      resource_id: "my-auto-scaling-group", 
      resource_type: "auto-scaling-group", 
      value: "Research", 
    }, 
  ], 
})

Request syntax with placeholder values


resp = client.delete_tags({
  tags: [ # required
    {
      resource_id: "XmlString",
      resource_type: "XmlString",
      key: "TagKey", # required
      value: "TagValue",
      propagate_at_launch: false,
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :tags (required, Array<Types::Tag>) —

    One or more tags.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2378

def delete_tags(params = {}, options = {})
  req = build_request(:delete_tags, params)
  req.send_request(options)
end

#delete_warm_pool(params = {}) ⇒ Struct

Deletes the warm pool for the specified Auto Scaling group.

For more information, see [Warm pools for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-warm-pools.html

Examples:

Request syntax with placeholder values


resp = client.delete_warm_pool({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  force_delete: false,
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :force_delete (Boolean) —

    Specifies that the warm pool is to be deleted along with all of its associated instances, without waiting for all instances to be terminated. This parameter also deletes any outstanding lifecycle actions associated with the warm pool instances.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2414

def delete_warm_pool(params = {}, options = {})
  req = build_request(:delete_warm_pool, params)
  req.send_request(options)
end

#describe_account_limits(params = {}) ⇒ Types::DescribeAccountLimitsAnswer

Describes the current Amazon EC2 Auto Scaling resource quotas for your account.

When you establish an Amazon Web Services account, the account has initial quotas on the maximum number of Auto Scaling groups and launch configurations that you can create in a given Region. For more information, see [Quotas for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-quotas.html

Examples:

Example: To describe your Auto Scaling account limits


# This example describes the Amazon EC2 Auto Scaling service quotas for your account.

resp = client.({
})

resp.to_h outputs the following:
{
  max_number_of_auto_scaling_groups: 20, 
  max_number_of_launch_configurations: 100, 
  number_of_auto_scaling_groups: 3, 
  number_of_launch_configurations: 5, 
}

Response structure


resp.max_number_of_auto_scaling_groups #=> Integer
resp.max_number_of_launch_configurations #=> Integer
resp.number_of_auto_scaling_groups #=> Integer
resp.number_of_launch_configurations #=> Integer

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2466

def (params = {}, options = {})
  req = build_request(:describe_account_limits, params)
  req.send_request(options)
end

#describe_adjustment_types(params = {}) ⇒ Types::DescribeAdjustmentTypesAnswer

Describes the available adjustment types for step scaling and simple scaling policies.

The following adjustment types are supported:

  • ‘ChangeInCapacity`

  • ‘ExactCapacity`

  • ‘PercentChangeInCapacity`

Examples:

Example: To describe the Amazon EC2 Auto Scaling adjustment types


# This example describes the available adjustment types.

resp = client.describe_adjustment_types({
})

resp.to_h outputs the following:
{
  adjustment_types: [
    {
      adjustment_type: "ChangeInCapacity", 
    }, 
    {
      adjustment_type: "ExactCapcity", 
    }, 
    {
      adjustment_type: "PercentChangeInCapacity", 
    }, 
  ], 
}

Response structure


resp.adjustment_types #=> Array
resp.adjustment_types[0].adjustment_type #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2518

def describe_adjustment_types(params = {}, options = {})
  req = build_request(:describe_adjustment_types, params)
  req.send_request(options)
end

#describe_auto_scaling_groups(params = {}) ⇒ Types::AutoScalingGroupsType

Gets information about the Auto Scaling groups in the account and Region.

If you specify Auto Scaling group names, the output includes information for only the specified Auto Scaling groups. If you specify filters, the output includes information for only those Auto Scaling groups that meet the filter criteria. If you do not specify group names or filters, the output includes information for all Auto Scaling groups.

This operation also returns information about instances in Auto Scaling groups. To retrieve information about the instances in a warm pool, you must call the [DescribeWarmPool] API.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeWarmPool.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

The following waiters are defined for this operation (see #wait_until for detailed usage):

* group_exists
* group_in_service
* group_not_exists

Examples:

Example: To describe an Auto Scaling group


# This example describes the specified Auto Scaling group.

resp = client.describe_auto_scaling_groups({
  auto_scaling_group_names: [
    "my-auto-scaling-group", 
  ], 
})

resp.to_h outputs the following:
{
  auto_scaling_groups: [
    {
      auto_scaling_group_arn: "arn:aws:autoscaling:us-west-1:123456789012:autoScalingGroup:12345678-1234-1234-1234-123456789012:autoScalingGroupName/my-auto-scaling-group", 
      auto_scaling_group_name: "my-auto-scaling-group", 
      availability_zones: [
        "us-west-2a", 
        "us-west-2b", 
        "us-west-2c", 
      ], 
      created_time: Time.parse("2023-03-09T22:15:11.611Z"), 
      default_cooldown: 300, 
      desired_capacity: 2, 
      enabled_metrics: [
      ], 
      health_check_grace_period: 300, 
      health_check_type: "EC2", 
      instances: [
        {
          availability_zone: "us-west-2c", 
          health_status: "Healthy", 
          instance_id: "i-05b4f7d5be44822a6", 
          instance_type: "t3.micro", 
          launch_configuration_name: "my-launch-config", 
          lifecycle_state: "InService", 
          protected_from_scale_in: false, 
        }, 
        {
          availability_zone: "us-west-2b", 
          health_status: "Healthy", 
          instance_id: "i-0c20ac468fa3049e8", 
          instance_type: "t3.micro", 
          launch_configuration_name: "my-launch-config", 
          lifecycle_state: "InService", 
          protected_from_scale_in: false, 
        }, 
      ], 
      launch_configuration_name: "my-launch-config", 
      load_balancer_names: [
      ], 
      max_size: 5, 
      min_size: 1, 
      new_instances_protected_from_scale_in: false, 
      service_linked_role_arn: "arn:aws:iam::123456789012:role/aws-service-role/autoscaling.amazonaws.com/AWSServiceRoleForAutoScaling", 
      suspended_processes: [
      ], 
      tags: [
      ], 
      target_group_arns: [
      ], 
      termination_policies: [
        "Default", 
      ], 
      traffic_sources: [
      ], 
      vpc_zone_identifier: "subnet-5ea0c127,subnet-6194ea3b,subnet-c934b782", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_auto_scaling_groups({
  auto_scaling_group_names: ["XmlStringMaxLen255"],
  include_instances: false,
  next_token: "XmlString",
  max_records: 1,
  filters: [
    {
      name: "XmlString",
      values: ["XmlString"],
    },
  ],
})

Response structure


resp.auto_scaling_groups #=> Array
resp.auto_scaling_groups[0].auto_scaling_group_name #=> String
resp.auto_scaling_groups[0].auto_scaling_group_arn #=> String
resp.auto_scaling_groups[0].launch_configuration_name #=> String
resp.auto_scaling_groups[0].launch_template.launch_template_id #=> String
resp.auto_scaling_groups[0].launch_template.launch_template_name #=> String
resp.auto_scaling_groups[0].launch_template.version #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.launch_template_specification.launch_template_id #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.launch_template_specification.launch_template_name #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.launch_template_specification.version #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_type #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].weighted_capacity #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].launch_template_specification.launch_template_id #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].launch_template_specification.launch_template_name #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].launch_template_specification.version #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.v_cpu_count.min #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.v_cpu_count.max #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_mi_b.min #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_mi_b.max #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.cpu_manufacturers #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.cpu_manufacturers[0] #=> String, one of "intel", "amd", "amazon-web-services", "apple"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_gi_b_per_v_cpu.min #=> Float
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_gi_b_per_v_cpu.max #=> Float
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.excluded_instance_types #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.excluded_instance_types[0] #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.instance_generations #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.instance_generations[0] #=> String, one of "current", "previous"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.spot_max_price_percentage_over_lowest_price #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.max_spot_price_as_percentage_of_optimal_on_demand_price #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.on_demand_max_price_percentage_over_lowest_price #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.bare_metal #=> String, one of "included", "excluded", "required"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.burstable_performance #=> String, one of "included", "excluded", "required"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.require_hibernate_support #=> Boolean
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_interface_count.min #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_interface_count.max #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.local_storage #=> String, one of "included", "excluded", "required"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.local_storage_types #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.local_storage_types[0] #=> String, one of "hdd", "ssd"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.total_local_storage_gb.min #=> Float
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.total_local_storage_gb.max #=> Float
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_ebs_bandwidth_mbps.min #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_ebs_bandwidth_mbps.max #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_types #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_types[0] #=> String, one of "gpu", "fpga", "inference"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_count.min #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_count.max #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_manufacturers #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_manufacturers[0] #=> String, one of "nvidia", "amd", "amazon-web-services", "xilinx"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_names #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_names[0] #=> String, one of "a100", "v100", "k80", "t4", "m60", "radeon-pro-v520", "vu9p"
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_total_memory_mi_b.min #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_total_memory_mi_b.max #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_bandwidth_gbps.min #=> Float
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_bandwidth_gbps.max #=> Float
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.allowed_instance_types #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.allowed_instance_types[0] #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_performance_factors.cpu.references #=> Array
resp.auto_scaling_groups[0].mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_performance_factors.cpu.references[0].instance_family #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.instances_distribution.on_demand_allocation_strategy #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.instances_distribution.on_demand_base_capacity #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.instances_distribution.on_demand_percentage_above_base_capacity #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.instances_distribution.spot_allocation_strategy #=> String
resp.auto_scaling_groups[0].mixed_instances_policy.instances_distribution.spot_instance_pools #=> Integer
resp.auto_scaling_groups[0].mixed_instances_policy.instances_distribution.spot_max_price #=> String
resp.auto_scaling_groups[0].min_size #=> Integer
resp.auto_scaling_groups[0].max_size #=> Integer
resp.auto_scaling_groups[0].desired_capacity #=> Integer
resp.auto_scaling_groups[0].predicted_capacity #=> Integer
resp.auto_scaling_groups[0].default_cooldown #=> Integer
resp.auto_scaling_groups[0].availability_zones #=> Array
resp.auto_scaling_groups[0].availability_zones[0] #=> String
resp.auto_scaling_groups[0].load_balancer_names #=> Array
resp.auto_scaling_groups[0].load_balancer_names[0] #=> String
resp.auto_scaling_groups[0].target_group_arns #=> Array
resp.auto_scaling_groups[0].target_group_arns[0] #=> String
resp.auto_scaling_groups[0].health_check_type #=> String
resp.auto_scaling_groups[0].health_check_grace_period #=> Integer
resp.auto_scaling_groups[0].instances #=> Array
resp.auto_scaling_groups[0].instances[0].instance_id #=> String
resp.auto_scaling_groups[0].instances[0].instance_type #=> String
resp.auto_scaling_groups[0].instances[0].availability_zone #=> String
resp.auto_scaling_groups[0].instances[0].lifecycle_state #=> String, one of "Pending", "Pending:Wait", "Pending:Proceed", "Quarantined", "InService", "Terminating", "Terminating:Wait", "Terminating:Proceed", "Terminated", "Detaching", "Detached", "EnteringStandby", "Standby", "Warmed:Pending", "Warmed:Pending:Wait", "Warmed:Pending:Proceed", "Warmed:Terminating", "Warmed:Terminating:Wait", "Warmed:Terminating:Proceed", "Warmed:Terminated", "Warmed:Stopped", "Warmed:Running", "Warmed:Hibernated"
resp.auto_scaling_groups[0].instances[0].health_status #=> String
resp.auto_scaling_groups[0].instances[0].launch_configuration_name #=> String
resp.auto_scaling_groups[0].instances[0].launch_template.launch_template_id #=> String
resp.auto_scaling_groups[0].instances[0].launch_template.launch_template_name #=> String
resp.auto_scaling_groups[0].instances[0].launch_template.version #=> String
resp.auto_scaling_groups[0].instances[0].protected_from_scale_in #=> Boolean
resp.auto_scaling_groups[0].instances[0].weighted_capacity #=> String
resp.auto_scaling_groups[0].created_time #=> Time
resp.auto_scaling_groups[0].suspended_processes #=> Array
resp.auto_scaling_groups[0].suspended_processes[0].process_name #=> String
resp.auto_scaling_groups[0].suspended_processes[0].suspension_reason #=> String
resp.auto_scaling_groups[0].placement_group #=> String
resp.auto_scaling_groups[0].vpc_zone_identifier #=> String
resp.auto_scaling_groups[0].enabled_metrics #=> Array
resp.auto_scaling_groups[0].enabled_metrics[0].metric #=> String
resp.auto_scaling_groups[0].enabled_metrics[0].granularity #=> String
resp.auto_scaling_groups[0].status #=> String
resp.auto_scaling_groups[0].tags #=> Array
resp.auto_scaling_groups[0].tags[0].resource_id #=> String
resp.auto_scaling_groups[0].tags[0].resource_type #=> String
resp.auto_scaling_groups[0].tags[0].key #=> String
resp.auto_scaling_groups[0].tags[0].value #=> String
resp.auto_scaling_groups[0].tags[0].propagate_at_launch #=> Boolean
resp.auto_scaling_groups[0].termination_policies #=> Array
resp.auto_scaling_groups[0].termination_policies[0] #=> String
resp.auto_scaling_groups[0].new_instances_protected_from_scale_in #=> Boolean
resp.auto_scaling_groups[0].service_linked_role_arn #=> String
resp.auto_scaling_groups[0].max_instance_lifetime #=> Integer
resp.auto_scaling_groups[0].capacity_rebalance #=> Boolean
resp.auto_scaling_groups[0].warm_pool_configuration.max_group_prepared_capacity #=> Integer
resp.auto_scaling_groups[0].warm_pool_configuration.min_size #=> Integer
resp.auto_scaling_groups[0].warm_pool_configuration.pool_state #=> String, one of "Stopped", "Running", "Hibernated"
resp.auto_scaling_groups[0].warm_pool_configuration.status #=> String, one of "PendingDelete"
resp.auto_scaling_groups[0].warm_pool_configuration.instance_reuse_policy.reuse_on_scale_in #=> Boolean
resp.auto_scaling_groups[0].warm_pool_size #=> Integer
resp.auto_scaling_groups[0].context #=> String
resp.auto_scaling_groups[0].desired_capacity_type #=> String
resp.auto_scaling_groups[0].default_instance_warmup #=> Integer
resp.auto_scaling_groups[0].traffic_sources #=> Array
resp.auto_scaling_groups[0].traffic_sources[0].identifier #=> String
resp.auto_scaling_groups[0].traffic_sources[0].type #=> String
resp.auto_scaling_groups[0].instance_maintenance_policy.min_healthy_percentage #=> Integer
resp.auto_scaling_groups[0].instance_maintenance_policy.max_healthy_percentage #=> Integer
resp.auto_scaling_groups[0].availability_zone_distribution.capacity_distribution_strategy #=> String, one of "balanced-only", "balanced-best-effort"
resp.auto_scaling_groups[0].availability_zone_impairment_policy.zonal_shift_enabled #=> Boolean
resp.auto_scaling_groups[0].availability_zone_impairment_policy.impaired_zone_health_check_behavior #=> String, one of "ReplaceUnhealthy", "IgnoreUnhealthy"
resp.auto_scaling_groups[0].capacity_reservation_specification.capacity_reservation_preference #=> String, one of "capacity-reservations-only", "capacity-reservations-first", "none", "default"
resp.auto_scaling_groups[0].capacity_reservation_specification.capacity_reservation_target.capacity_reservation_ids #=> Array
resp.auto_scaling_groups[0].capacity_reservation_specification.capacity_reservation_target.capacity_reservation_ids[0] #=> String
resp.auto_scaling_groups[0].capacity_reservation_specification.capacity_reservation_target.capacity_reservation_resource_group_arns #=> Array
resp.auto_scaling_groups[0].capacity_reservation_specification.capacity_reservation_target.capacity_reservation_resource_group_arns[0] #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_names (Array<String>) —

    The names of the Auto Scaling groups. By default, you can only specify up to 50 names. You can optionally increase this limit using the ‘MaxRecords` property.

    If you omit this property, all Auto Scaling groups are described.

  • :include_instances (Boolean) —

    Specifies whether to include information about Amazon EC2 instances in the response. When set to ‘true` (default), the response includes instance details.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `100`.

  • :filters (Array<Types::Filter>) —

    One or more filters to limit the results based on specific tags.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2807

def describe_auto_scaling_groups(params = {}, options = {})
  req = build_request(:describe_auto_scaling_groups, params)
  req.send_request(options)
end

#describe_auto_scaling_instances(params = {}) ⇒ Types::AutoScalingInstancesType

Gets information about the Auto Scaling instances in the account and Region.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe one or more Auto Scaling instances


# This example describes the specified Auto Scaling instance.

resp = client.describe_auto_scaling_instances({
  instance_ids: [
    "i-05b4f7d5be44822a6", 
  ], 
})

resp.to_h outputs the following:
{
  auto_scaling_instances: [
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      availability_zone: "us-west-2c", 
      health_status: "HEALTHY", 
      instance_id: "i-05b4f7d5be44822a6", 
      instance_type: "t3.micro", 
      launch_configuration_name: "my-launch-config", 
      lifecycle_state: "InService", 
      protected_from_scale_in: false, 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_auto_scaling_instances({
  instance_ids: ["XmlStringMaxLen19"],
  max_records: 1,
  next_token: "XmlString",
})

Response structure


resp.auto_scaling_instances #=> Array
resp.auto_scaling_instances[0].instance_id #=> String
resp.auto_scaling_instances[0].instance_type #=> String
resp.auto_scaling_instances[0].auto_scaling_group_name #=> String
resp.auto_scaling_instances[0].availability_zone #=> String
resp.auto_scaling_instances[0].lifecycle_state #=> String
resp.auto_scaling_instances[0].health_status #=> String
resp.auto_scaling_instances[0].launch_configuration_name #=> String
resp.auto_scaling_instances[0].launch_template.launch_template_id #=> String
resp.auto_scaling_instances[0].launch_template.launch_template_name #=> String
resp.auto_scaling_instances[0].launch_template.version #=> String
resp.auto_scaling_instances[0].protected_from_scale_in #=> Boolean
resp.auto_scaling_instances[0].weighted_capacity #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_ids (Array<String>) —

    The IDs of the instances. If you omit this property, all Auto Scaling instances are described. If you specify an ID that does not exist, it is ignored with no error.

    Array Members: Maximum number of 50 items.

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `50`.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2893

def describe_auto_scaling_instances(params = {}, options = {})
  req = build_request(:describe_auto_scaling_instances, params)
  req.send_request(options)
end

#describe_auto_scaling_notification_types(params = {}) ⇒ Types::DescribeAutoScalingNotificationTypesAnswer

Describes the notification types that are supported by Amazon EC2 Auto Scaling.

Examples:

Example: To describe the Auto Scaling notification types


# This example describes the available notification types.

resp = client.describe_auto_scaling_notification_types({
})

resp.to_h outputs the following:
{
  auto_scaling_notification_types: [
    "autoscaling:EC2_INSTANCE_LAUNCH", 
    "autoscaling:EC2_INSTANCE_LAUNCH_ERROR", 
    "autoscaling:EC2_INSTANCE_TERMINATE", 
    "autoscaling:EC2_INSTANCE_TERMINATE_ERROR", 
    "autoscaling:TEST_NOTIFICATION", 
  ], 
}

Response structure


resp.auto_scaling_notification_types #=> Array
resp.auto_scaling_notification_types[0] #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 2933

def describe_auto_scaling_notification_types(params = {}, options = {})
  req = build_request(:describe_auto_scaling_notification_types, params)
  req.send_request(options)
end

#describe_instance_refreshes(params = {}) ⇒ Types::DescribeInstanceRefreshesAnswer

Gets information about the instance refreshes for the specified Auto Scaling group from the previous six weeks.

This operation is part of the [instance refresh feature] in Amazon EC2 Auto Scaling, which helps you update instances in your Auto Scaling group after you make configuration changes.

To help you determine the status of an instance refresh, Amazon EC2 Auto Scaling returns information about the instance refreshes you previously initiated, including their status, start time, end time, the percentage of the instance refresh that is complete, and the number of instances remaining to update before the instance refresh is complete. If a rollback is initiated while an instance refresh is in progress, Amazon EC2 Auto Scaling also returns information about the rollback of the instance refresh.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-refresh.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To list instance refreshes


# This example describes the instance refreshes for the specified Auto Scaling group.

resp = client.describe_instance_refreshes({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  instance_refreshes: [
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      instance_refresh_id: "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b", 
      instances_to_update: 0, 
      percentage_complete: 50, 
      preferences: {
        alarm_specification: {
          alarms: [
            "my-alarm", 
          ], 
        }, 
        auto_rollback: true, 
        instance_warmup: 200, 
        max_healthy_percentage: 120, 
        min_healthy_percentage: 90, 
        scale_in_protected_instances: "Ignore", 
        skip_matching: false, 
        standby_instances: "Ignore", 
      }, 
      start_time: Time.parse("2023-06-13T16:46:52+00:00"), 
      status: "InProgress", 
      status_reason: "Waiting for instances to warm up before continuing. For example: i-0645704820a8e83ff is warming up.", 
    }, 
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      end_time: Time.parse("2023-06-02T13:59:45+00:00"), 
      instance_refresh_id: "0e151305-1e57-4a32-a256-1fd14157c5ec", 
      instances_to_update: 0, 
      percentage_complete: 100, 
      preferences: {
        alarm_specification: {
          alarms: [
            "my-alarm", 
          ], 
        }, 
        auto_rollback: true, 
        instance_warmup: 200, 
        max_healthy_percentage: 120, 
        min_healthy_percentage: 90, 
        scale_in_protected_instances: "Ignore", 
        skip_matching: false, 
        standby_instances: "Ignore", 
      }, 
      start_time: Time.parse("2023-06-02T13:53:37+00:00"), 
      status: "Successful", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_instance_refreshes({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  instance_refresh_ids: ["XmlStringMaxLen255"],
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.instance_refreshes #=> Array
resp.instance_refreshes[0].instance_refresh_id #=> String
resp.instance_refreshes[0].auto_scaling_group_name #=> String
resp.instance_refreshes[0].status #=> String, one of "Pending", "InProgress", "Successful", "Failed", "Cancelling", "Cancelled", "RollbackInProgress", "RollbackFailed", "RollbackSuccessful", "Baking"
resp.instance_refreshes[0].status_reason #=> String
resp.instance_refreshes[0].start_time #=> Time
resp.instance_refreshes[0].end_time #=> Time
resp.instance_refreshes[0].percentage_complete #=> Integer
resp.instance_refreshes[0].instances_to_update #=> Integer
resp.instance_refreshes[0].progress_details.live_pool_progress.percentage_complete #=> Integer
resp.instance_refreshes[0].progress_details.live_pool_progress.instances_to_update #=> Integer
resp.instance_refreshes[0].progress_details.warm_pool_progress.percentage_complete #=> Integer
resp.instance_refreshes[0].progress_details.warm_pool_progress.instances_to_update #=> Integer
resp.instance_refreshes[0].preferences.min_healthy_percentage #=> Integer
resp.instance_refreshes[0].preferences.instance_warmup #=> Integer
resp.instance_refreshes[0].preferences.checkpoint_percentages #=> Array
resp.instance_refreshes[0].preferences.checkpoint_percentages[0] #=> Integer
resp.instance_refreshes[0].preferences.checkpoint_delay #=> Integer
resp.instance_refreshes[0].preferences.skip_matching #=> Boolean
resp.instance_refreshes[0].preferences.auto_rollback #=> Boolean
resp.instance_refreshes[0].preferences.scale_in_protected_instances #=> String, one of "Refresh", "Ignore", "Wait"
resp.instance_refreshes[0].preferences.standby_instances #=> String, one of "Terminate", "Ignore", "Wait"
resp.instance_refreshes[0].preferences.alarm_specification.alarms #=> Array
resp.instance_refreshes[0].preferences.alarm_specification.alarms[0] #=> String
resp.instance_refreshes[0].preferences.max_healthy_percentage #=> Integer
resp.instance_refreshes[0].preferences.bake_time #=> Integer
resp.instance_refreshes[0].desired_configuration.launch_template.launch_template_id #=> String
resp.instance_refreshes[0].desired_configuration.launch_template.launch_template_name #=> String
resp.instance_refreshes[0].desired_configuration.launch_template.version #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.launch_template_specification.launch_template_id #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.launch_template_specification.launch_template_name #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.launch_template_specification.version #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_type #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].weighted_capacity #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].launch_template_specification.launch_template_id #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].launch_template_specification.launch_template_name #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].launch_template_specification.version #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.v_cpu_count.min #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.v_cpu_count.max #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_mi_b.min #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_mi_b.max #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.cpu_manufacturers #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.cpu_manufacturers[0] #=> String, one of "intel", "amd", "amazon-web-services", "apple"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_gi_b_per_v_cpu.min #=> Float
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.memory_gi_b_per_v_cpu.max #=> Float
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.excluded_instance_types #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.excluded_instance_types[0] #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.instance_generations #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.instance_generations[0] #=> String, one of "current", "previous"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.spot_max_price_percentage_over_lowest_price #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.max_spot_price_as_percentage_of_optimal_on_demand_price #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.on_demand_max_price_percentage_over_lowest_price #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.bare_metal #=> String, one of "included", "excluded", "required"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.burstable_performance #=> String, one of "included", "excluded", "required"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.require_hibernate_support #=> Boolean
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_interface_count.min #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_interface_count.max #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.local_storage #=> String, one of "included", "excluded", "required"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.local_storage_types #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.local_storage_types[0] #=> String, one of "hdd", "ssd"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.total_local_storage_gb.min #=> Float
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.total_local_storage_gb.max #=> Float
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_ebs_bandwidth_mbps.min #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_ebs_bandwidth_mbps.max #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_types #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_types[0] #=> String, one of "gpu", "fpga", "inference"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_count.min #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_count.max #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_manufacturers #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_manufacturers[0] #=> String, one of "nvidia", "amd", "amazon-web-services", "xilinx"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_names #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_names[0] #=> String, one of "a100", "v100", "k80", "t4", "m60", "radeon-pro-v520", "vu9p"
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_total_memory_mi_b.min #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.accelerator_total_memory_mi_b.max #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_bandwidth_gbps.min #=> Float
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.network_bandwidth_gbps.max #=> Float
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.allowed_instance_types #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.allowed_instance_types[0] #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_performance_factors.cpu.references #=> Array
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.launch_template.overrides[0].instance_requirements.baseline_performance_factors.cpu.references[0].instance_family #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.instances_distribution.on_demand_allocation_strategy #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.instances_distribution.on_demand_base_capacity #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.instances_distribution.on_demand_percentage_above_base_capacity #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.instances_distribution.spot_allocation_strategy #=> String
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.instances_distribution.spot_instance_pools #=> Integer
resp.instance_refreshes[0].desired_configuration.mixed_instances_policy.instances_distribution.spot_max_price #=> String
resp.instance_refreshes[0].rollback_details.rollback_reason #=> String
resp.instance_refreshes[0].rollback_details.rollback_start_time #=> Time
resp.instance_refreshes[0].rollback_details.percentage_complete_on_rollback #=> Integer
resp.instance_refreshes[0].rollback_details.instances_to_update_on_rollback #=> Integer
resp.instance_refreshes[0].rollback_details.progress_details_on_rollback.live_pool_progress.percentage_complete #=> Integer
resp.instance_refreshes[0].rollback_details.progress_details_on_rollback.live_pool_progress.instances_to_update #=> Integer
resp.instance_refreshes[0].rollback_details.progress_details_on_rollback.warm_pool_progress.percentage_complete #=> Integer
resp.instance_refreshes[0].rollback_details.progress_details_on_rollback.warm_pool_progress.instances_to_update #=> Integer
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :instance_refresh_ids (Array<String>) —

    One or more instance refresh IDs.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3152

def describe_instance_refreshes(params = {}, options = {})
  req = build_request(:describe_instance_refreshes, params)
  req.send_request(options)
end

#describe_launch_configurations(params = {}) ⇒ Types::LaunchConfigurationsType

Gets information about the launch configurations in the account and Region.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe Auto Scaling launch configurations


# This example describes the specified launch configuration.

resp = client.describe_launch_configurations({
  launch_configuration_names: [
    "my-launch-config", 
  ], 
})

resp.to_h outputs the following:
{
  launch_configurations: [
    {
      associate_public_ip_address: true, 
      block_device_mappings: [
      ], 
      created_time: Time.parse("2014-05-07T17:39:28.599Z"), 
      ebs_optimized: false, 
      image_id: "ami-043a5034", 
      instance_monitoring: {
        enabled: true, 
      }, 
      instance_type: "t1.micro", 
      launch_configuration_arn: "arn:aws:autoscaling:us-west-2:123456789012:launchConfiguration:98d3b196-4cf9-4e88-8ca1-8547c24ced8b:launchConfigurationName/my-launch-config", 
      launch_configuration_name: "my-launch-config", 
      security_groups: [
        "sg-67ef0308", 
      ], 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_launch_configurations({
  launch_configuration_names: ["XmlStringMaxLen255"],
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.launch_configurations #=> Array
resp.launch_configurations[0].launch_configuration_name #=> String
resp.launch_configurations[0].launch_configuration_arn #=> String
resp.launch_configurations[0].image_id #=> String
resp.launch_configurations[0].key_name #=> String
resp.launch_configurations[0].security_groups #=> Array
resp.launch_configurations[0].security_groups[0] #=> String
resp.launch_configurations[0].classic_link_vpc_id #=> String
resp.launch_configurations[0].classic_link_vpc_security_groups #=> Array
resp.launch_configurations[0].classic_link_vpc_security_groups[0] #=> String
resp.launch_configurations[0].user_data #=> String
resp.launch_configurations[0].instance_type #=> String
resp.launch_configurations[0].kernel_id #=> String
resp.launch_configurations[0].ramdisk_id #=> String
resp.launch_configurations[0].block_device_mappings #=> Array
resp.launch_configurations[0].block_device_mappings[0].virtual_name #=> String
resp.launch_configurations[0].block_device_mappings[0].device_name #=> String
resp.launch_configurations[0].block_device_mappings[0].ebs.snapshot_id #=> String
resp.launch_configurations[0].block_device_mappings[0].ebs.volume_size #=> Integer
resp.launch_configurations[0].block_device_mappings[0].ebs.volume_type #=> String
resp.launch_configurations[0].block_device_mappings[0].ebs.delete_on_termination #=> Boolean
resp.launch_configurations[0].block_device_mappings[0].ebs.iops #=> Integer
resp.launch_configurations[0].block_device_mappings[0].ebs.encrypted #=> Boolean
resp.launch_configurations[0].block_device_mappings[0].ebs.throughput #=> Integer
resp.launch_configurations[0].block_device_mappings[0].no_device #=> Boolean
resp.launch_configurations[0].instance_monitoring.enabled #=> Boolean
resp.launch_configurations[0].spot_price #=> String
resp.launch_configurations[0].iam_instance_profile #=> String
resp.launch_configurations[0].created_time #=> Time
resp.launch_configurations[0].ebs_optimized #=> Boolean
resp.launch_configurations[0].associate_public_ip_address #=> Boolean
resp.launch_configurations[0].placement_tenancy #=> String
resp.launch_configurations[0].metadata_options.http_tokens #=> String, one of "optional", "required"
resp.launch_configurations[0].metadata_options.http_put_response_hop_limit #=> Integer
resp.launch_configurations[0].metadata_options.http_endpoint #=> String, one of "disabled", "enabled"
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :launch_configuration_names (Array<String>) —

    The launch configuration names. If you omit this property, all launch configurations are described.

    Array Members: Maximum number of 50 items.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3266

def describe_launch_configurations(params = {}, options = {})
  req = build_request(:describe_launch_configurations, params)
  req.send_request(options)
end

#describe_lifecycle_hook_types(params = {}) ⇒ Types::DescribeLifecycleHookTypesAnswer

Describes the available types of lifecycle hooks.

The following hook types are supported:

  • ‘autoscaling:EC2_INSTANCE_LAUNCHING`

  • ‘autoscaling:EC2_INSTANCE_TERMINATING`

Examples:

Example: To describe the available types of lifecycle hooks


# This example describes the available lifecycle hook types.

resp = client.describe_lifecycle_hook_types({
})

resp.to_h outputs the following:
{
  lifecycle_hook_types: [
    "autoscaling:EC2_INSTANCE_LAUNCHING", 
    "autoscaling:EC2_INSTANCE_TERMINATING", 
  ], 
}

Response structure


resp.lifecycle_hook_types #=> Array
resp.lifecycle_hook_types[0] #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3308

def describe_lifecycle_hook_types(params = {}, options = {})
  req = build_request(:describe_lifecycle_hook_types, params)
  req.send_request(options)
end

#describe_lifecycle_hooks(params = {}) ⇒ Types::DescribeLifecycleHooksAnswer

Gets information about the lifecycle hooks for the specified Auto Scaling group.

Examples:

Example: To describe your lifecycle hooks


# This example describes the lifecycle hooks for the specified Auto Scaling group.

resp = client.describe_lifecycle_hooks({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  lifecycle_hooks: [
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      default_result: "ABANDON", 
      global_timeout: 172800, 
      heartbeat_timeout: 3600, 
      lifecycle_hook_name: "my-lifecycle-hook", 
      lifecycle_transition: "autoscaling:EC2_INSTANCE_LAUNCHING", 
      notification_target_arn: "arn:aws:sns:us-west-2:123456789012:my-sns-topic", 
      role_arn: "arn:aws:iam::123456789012:role/my-auto-scaling-role", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_lifecycle_hooks({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  lifecycle_hook_names: ["AsciiStringMaxLen255"],
})

Response structure


resp.lifecycle_hooks #=> Array
resp.lifecycle_hooks[0].lifecycle_hook_name #=> String
resp.lifecycle_hooks[0].auto_scaling_group_name #=> String
resp.lifecycle_hooks[0].lifecycle_transition #=> String
resp.lifecycle_hooks[0].notification_target_arn #=> String
resp.lifecycle_hooks[0].role_arn #=> String
resp.lifecycle_hooks[0].notification_metadata #=> String
resp.lifecycle_hooks[0].heartbeat_timeout #=> Integer
resp.lifecycle_hooks[0].global_timeout #=> Integer
resp.lifecycle_hooks[0].default_result #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :lifecycle_hook_names (Array<String>) —

    The names of one or more lifecycle hooks. If you omit this property, all lifecycle hooks are described.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3376

def describe_lifecycle_hooks(params = {}, options = {})
  req = build_request(:describe_lifecycle_hooks, params)
  req.send_request(options)
end

#describe_load_balancer_target_groups(params = {}) ⇒ Types::DescribeLoadBalancerTargetGroupsResponse

<note markdown=“1”> This API operation is superseded by [DescribeTrafficSources], which can describe multiple traffic sources types. We recommend using ‘DetachTrafficSources` to simplify how you manage traffic sources. However, we continue to support `DescribeLoadBalancerTargetGroups`. You can use both the original `DescribeLoadBalancerTargetGroups` API operation and `DescribeTrafficSources` on the same Auto Scaling group.

</note>

Gets information about the Elastic Load Balancing target groups for the specified Auto Scaling group.

To determine the attachment status of the target group, use the ‘State` element in the response. When you attach a target group to an Auto Scaling group, the initial `State` value is `Adding`. The state transitions to `Added` after all Auto Scaling instances are registered with the target group. If Elastic Load Balancing health checks are enabled for the Auto Scaling group, the state transitions to `InService` after at least one Auto Scaling instance passes the health check. When the target group is in the `InService` state, Amazon EC2 Auto Scaling can terminate and replace any instances that are reported as unhealthy. If no registered instances pass the health checks, the target group doesn’t enter the ‘InService` state.

Target groups also have an ‘InService` state if you attach them in the

CreateAutoScalingGroup][2

API call. If your target group state is

‘InService`, but it is not working properly, check the scaling activities by calling [DescribeScalingActivities] and take any corrective actions necessary.

For help with failed health checks, see [Troubleshooting Amazon EC2 Auto Scaling: Health checks] in the *Amazon EC2 Auto Scaling User Guide*. For more information, see [Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

<note markdown=“1”> You can use this operation to describe target groups that were attached by using [AttachLoadBalancerTargetGroups], but not for target groups that were attached by using [AttachTrafficSources].

</note>

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CreateAutoScalingGroup.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeScalingActivities.html [4]: docs.aws.amazon.com/autoscaling/ec2/userguide/ts-as-healthchecks.html [5]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html [6]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachLoadBalancerTargetGroups.html [7]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachTrafficSources.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe the target groups for an Auto Scaling group


# This example describes the target groups attached to the specified Auto Scaling group.

resp = client.describe_load_balancer_target_groups({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  load_balancer_target_groups: [
    {
      load_balancer_target_group_arn: "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067", 
      state: "Added", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_load_balancer_target_groups({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.load_balancer_target_groups #=> Array
resp.load_balancer_target_groups[0].load_balancer_target_group_arn #=> String
resp.load_balancer_target_groups[0].state #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘100` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3489

def describe_load_balancer_target_groups(params = {}, options = {})
  req = build_request(:describe_load_balancer_target_groups, params)
  req.send_request(options)
end

#describe_load_balancers(params = {}) ⇒ Types::DescribeLoadBalancersResponse

<note markdown=“1”> This API operation is superseded by [DescribeTrafficSources], which can describe multiple traffic sources types. We recommend using ‘DescribeTrafficSources` to simplify how you manage traffic sources. However, we continue to support `DescribeLoadBalancers`. You can use both the original `DescribeLoadBalancers` API operation and `DescribeTrafficSources` on the same Auto Scaling group.

</note>

Gets information about the load balancers for the specified Auto Scaling group.

This operation describes only Classic Load Balancers. If you have Application Load Balancers, Network Load Balancers, or Gateway Load Balancers, use the [DescribeLoadBalancerTargetGroups] API instead.

To determine the attachment status of the load balancer, use the ‘State` element in the response. When you attach a load balancer to an Auto Scaling group, the initial `State` value is `Adding`. The state transitions to `Added` after all Auto Scaling instances are registered with the load balancer. If Elastic Load Balancing health checks are enabled for the Auto Scaling group, the state transitions to `InService` after at least one Auto Scaling instance passes the health check. When the load balancer is in the `InService` state, Amazon EC2 Auto Scaling can terminate and replace any instances that are reported as unhealthy. If no registered instances pass the health checks, the load balancer doesn’t enter the ‘InService` state.

Load balancers also have an ‘InService` state if you attach them in the [CreateAutoScalingGroup] API call. If your load balancer state is `InService`, but it is not working properly, check the scaling activities by calling [DescribeScalingActivities] and take any corrective actions necessary.

For help with failed health checks, see [Troubleshooting Amazon EC2 Auto Scaling: Health checks] in the *Amazon EC2 Auto Scaling User Guide*. For more information, see [Use Elastic Load Balancing to distribute traffic across the instances in your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeLoadBalancerTargetGroups.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CreateAutoScalingGroup.html [4]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeScalingActivities.html [5]: docs.aws.amazon.com/autoscaling/ec2/userguide/ts-as-healthchecks.html [6]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-load-balancer.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe the load balancers for an Auto Scaling group


# This example describes the load balancers attached to the specified Auto Scaling group.

resp = client.describe_load_balancers({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  load_balancers: [
    {
      load_balancer_name: "my-load-balancer", 
      state: "Added", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_load_balancers({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.load_balancers #=> Array
resp.load_balancers[0].load_balancer_name #=> String
resp.load_balancers[0].state #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘100` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3599

def describe_load_balancers(params = {}, options = {})
  req = build_request(:describe_load_balancers, params)
  req.send_request(options)
end

#describe_metric_collection_types(params = {}) ⇒ Types::DescribeMetricCollectionTypesAnswer

Describes the available CloudWatch metrics for Amazon EC2 Auto Scaling.

Examples:

Example: To describe the Auto Scaling metric collection types


# This example describes the available metric collection types.

resp = client.describe_metric_collection_types({
})

resp.to_h outputs the following:
{
  granularities: [
    {
      granularity: "1Minute", 
    }, 
  ], 
  metrics: [
    {
      metric: "GroupMinSize", 
    }, 
    {
      metric: "GroupMaxSize", 
    }, 
    {
      metric: "GroupDesiredCapacity", 
    }, 
    {
      metric: "GroupInServiceInstances", 
    }, 
    {
      metric: "GroupPendingInstances", 
    }, 
    {
      metric: "GroupTerminatingInstances", 
    }, 
    {
      metric: "GroupStandbyInstances", 
    }, 
    {
      metric: "GroupTotalInstances", 
    }, 
  ], 
}

Response structure


resp.metrics #=> Array
resp.metrics[0].metric #=> String
resp.granularities #=> Array
resp.granularities[0].granularity #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3666

def describe_metric_collection_types(params = {}, options = {})
  req = build_request(:describe_metric_collection_types, params)
  req.send_request(options)
end

#describe_notification_configurations(params = {}) ⇒ Types::DescribeNotificationConfigurationsAnswer

Gets information about the Amazon SNS notifications that are configured for one or more Auto Scaling groups.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe Auto Scaling notification configurations


# This example describes the notification configurations for the specified Auto Scaling group.

resp = client.describe_notification_configurations({
  auto_scaling_group_names: [
    "my-auto-scaling-group", 
  ], 
})

resp.to_h outputs the following:
{
  notification_configurations: [
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      notification_type: "autoscaling:TEST_NOTIFICATION", 
      topic_arn: "arn:aws:sns:us-west-2:123456789012:my-sns-topic-2", 
    }, 
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      notification_type: "autoscaling:TEST_NOTIFICATION", 
      topic_arn: "arn:aws:sns:us-west-2:123456789012:my-sns-topic", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_notification_configurations({
  auto_scaling_group_names: ["XmlStringMaxLen255"],
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.notification_configurations #=> Array
resp.notification_configurations[0].auto_scaling_group_name #=> String
resp.notification_configurations[0].topic_arn #=> String
resp.notification_configurations[0].notification_type #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_names (Array<String>) —

    The name of the Auto Scaling group.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3739

def describe_notification_configurations(params = {}, options = {})
  req = build_request(:describe_notification_configurations, params)
  req.send_request(options)
end

#describe_policies(params = {}) ⇒ Types::PoliciesType

Gets information about the scaling policies in the account and Region.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe scaling policies


# This example describes the policies for the specified Auto Scaling group.

resp = client.describe_policies({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  scaling_policies: [
    {
      adjustment_type: "ChangeInCapacity", 
      alarms: [
      ], 
      auto_scaling_group_name: "my-auto-scaling-group", 
      policy_arn: "arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:2233f3d7-6290-403b-b632-93c553560106:autoScalingGroupName/my-auto-scaling-group:policyName/ScaleIn", 
      policy_name: "ScaleIn", 
      scaling_adjustment: -1, 
    }, 
    {
      adjustment_type: "PercentChangeInCapacity", 
      alarms: [
      ], 
      auto_scaling_group_name: "my-auto-scaling-group", 
      cooldown: 60, 
      min_adjustment_step: 2, 
      policy_arn: "arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:2b435159-cf77-4e89-8c0e-d63b497baad7:autoScalingGroupName/my-auto-scaling-group:policyName/ScalePercentChange", 
      policy_name: "ScalePercentChange", 
      scaling_adjustment: 25, 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_policies({
  auto_scaling_group_name: "XmlStringMaxLen255",
  policy_names: ["ResourceName"],
  policy_types: ["XmlStringMaxLen64"],
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.scaling_policies #=> Array
resp.scaling_policies[0].auto_scaling_group_name #=> String
resp.scaling_policies[0].policy_name #=> String
resp.scaling_policies[0].policy_arn #=> String
resp.scaling_policies[0].policy_type #=> String
resp.scaling_policies[0].adjustment_type #=> String
resp.scaling_policies[0].min_adjustment_step #=> Integer
resp.scaling_policies[0].min_adjustment_magnitude #=> Integer
resp.scaling_policies[0].scaling_adjustment #=> Integer
resp.scaling_policies[0].cooldown #=> Integer
resp.scaling_policies[0].step_adjustments #=> Array
resp.scaling_policies[0].step_adjustments[0].metric_interval_lower_bound #=> Float
resp.scaling_policies[0].step_adjustments[0].metric_interval_upper_bound #=> Float
resp.scaling_policies[0].step_adjustments[0].scaling_adjustment #=> Integer
resp.scaling_policies[0].metric_aggregation_type #=> String
resp.scaling_policies[0].estimated_instance_warmup #=> Integer
resp.scaling_policies[0].alarms #=> Array
resp.scaling_policies[0].alarms[0].alarm_name #=> String
resp.scaling_policies[0].alarms[0].alarm_arn #=> String
resp.scaling_policies[0].target_tracking_configuration.predefined_metric_specification.predefined_metric_type #=> String, one of "ASGAverageCPUUtilization", "ASGAverageNetworkIn", "ASGAverageNetworkOut", "ALBRequestCountPerTarget"
resp.scaling_policies[0].target_tracking_configuration.predefined_metric_specification.resource_label #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metric_name #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.namespace #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.dimensions #=> Array
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.dimensions[0].name #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.dimensions[0].value #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.statistic #=> String, one of "Average", "Minimum", "Maximum", "SampleCount", "Sum"
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.unit #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.period #=> Integer
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics #=> Array
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].id #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].expression #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.metric.namespace #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.metric.metric_name #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.metric.dimensions #=> Array
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.metric.dimensions[0].name #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.metric.dimensions[0].value #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.stat #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.unit #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].metric_stat.period #=> Integer
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].label #=> String
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].period #=> Integer
resp.scaling_policies[0].target_tracking_configuration.customized_metric_specification.metrics[0].return_data #=> Boolean
resp.scaling_policies[0].target_tracking_configuration.target_value #=> Float
resp.scaling_policies[0].target_tracking_configuration.disable_scale_in #=> Boolean
resp.scaling_policies[0].enabled #=> Boolean
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].target_value #=> Float
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].predefined_metric_pair_specification.predefined_metric_type #=> String, one of "ASGCPUUtilization", "ASGNetworkIn", "ASGNetworkOut", "ALBRequestCount"
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].predefined_metric_pair_specification.resource_label #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].predefined_scaling_metric_specification.predefined_metric_type #=> String, one of "ASGAverageCPUUtilization", "ASGAverageNetworkIn", "ASGAverageNetworkOut", "ALBRequestCountPerTarget"
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].predefined_scaling_metric_specification.resource_label #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].predefined_load_metric_specification.predefined_metric_type #=> String, one of "ASGTotalCPUUtilization", "ASGTotalNetworkIn", "ASGTotalNetworkOut", "ALBTargetGroupRequestCount"
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].predefined_load_metric_specification.resource_label #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].id #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].expression #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.stat #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].metric_stat.unit #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].label #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_scaling_metric_specification.metric_data_queries[0].return_data #=> Boolean
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].id #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].expression #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.stat #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].metric_stat.unit #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].label #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_load_metric_specification.metric_data_queries[0].return_data #=> Boolean
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].id #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].expression #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.stat #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].metric_stat.unit #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].label #=> String
resp.scaling_policies[0].predictive_scaling_configuration.metric_specifications[0].customized_capacity_metric_specification.metric_data_queries[0].return_data #=> Boolean
resp.scaling_policies[0].predictive_scaling_configuration.mode #=> String, one of "ForecastAndScale", "ForecastOnly"
resp.scaling_policies[0].predictive_scaling_configuration.scheduling_buffer_time #=> Integer
resp.scaling_policies[0].predictive_scaling_configuration.max_capacity_breach_behavior #=> String, one of "HonorMaxCapacity", "IncreaseMaxCapacity"
resp.scaling_policies[0].predictive_scaling_configuration.max_capacity_buffer #=> Integer
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (String) —

    The name of the Auto Scaling group.

  • :policy_names (Array<String>) —

    The names of one or more policies. If you omit this property, all policies are described. If a group name is provided, the results are limited to that group. If you specify an unknown policy name, it is ignored with no error.

    Array Members: Maximum number of 50 items.

  • :policy_types (Array<String>) —

    One or more policy types. The valid values are ‘SimpleScaling`, `StepScaling`, `TargetTrackingScaling`, and `PredictiveScaling`.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to be returned with each call. The default value is ‘50` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 3923

def describe_policies(params = {}, options = {})
  req = build_request(:describe_policies, params)
  req.send_request(options)
end

#describe_scaling_activities(params = {}) ⇒ Types::ActivitiesType

Gets information about the scaling activities in the account and Region.

When scaling events occur, you see a record of the scaling activity in the scaling activities. For more information, see [Verify a scaling activity for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

If the scaling event succeeds, the value of the ‘StatusCode` element in the response is `Successful`. If an attempt to launch instances failed, the `StatusCode` value is `Failed` or `Cancelled` and the `StatusMessage` element in the response indicates the cause of the failure. For help interpreting the `StatusMessage`, see

Troubleshooting Amazon EC2 Auto Scaling][2

in the *Amazon EC2 Auto

Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-verify-scaling-activity.html [2]: docs.aws.amazon.com/autoscaling/ec2/userguide/CHAP_Troubleshooting.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe the scaling activities for an Auto Scaling group


# This example describes the scaling activities for the specified Auto Scaling group.

resp = client.describe_scaling_activities({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  activities: [
    {
      activity_id: "f9f2d65b-f1f2-43e7-b46d-d86756459699", 
      auto_scaling_group_arn: "arn:aws:autoscaling:us-east-1:123456789012:autoScalingGroup:12345678-1234-1234-1234-123456789012:autoScalingGroupName/my-auto-scaling-group", 
      auto_scaling_group_name: "my-auto-scaling-group", 
      cause: "At 2013-08-19T20:53:25Z a user request created an AutoScalingGroup changing the desired capacity from 0 to 1.  At 2013-08-19T20:53:29Z an instance was started in response to a difference between desired and actual capacity, increasing the capacity from 0 to 1.", 
      description: "Launching a new EC2 instance: i-4ba0837f", 
      details: "details", 
      end_time: Time.parse("2013-08-19T20:54:02Z"), 
      progress: 100, 
      start_time: Time.parse("2013-08-19T20:53:29.930Z"), 
      status_code: "Successful", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_scaling_activities({
  activity_ids: ["XmlString"],
  auto_scaling_group_name: "XmlStringMaxLen255",
  include_deleted_groups: false,
  max_records: 1,
  next_token: "XmlString",
})

Response structure


resp.activities #=> Array
resp.activities[0].activity_id #=> String
resp.activities[0].auto_scaling_group_name #=> String
resp.activities[0].description #=> String
resp.activities[0].cause #=> String
resp.activities[0].start_time #=> Time
resp.activities[0].end_time #=> Time
resp.activities[0].status_code #=> String, one of "PendingSpotBidPlacement", "WaitingForSpotInstanceRequestId", "WaitingForSpotInstanceId", "WaitingForInstanceId", "PreInService", "InProgress", "WaitingForELBConnectionDraining", "MidLifecycleAction", "WaitingForInstanceWarmup", "Successful", "Failed", "Cancelled", "WaitingForConnectionDraining"
resp.activities[0].status_message #=> String
resp.activities[0].progress #=> Integer
resp.activities[0].details #=> String
resp.activities[0].auto_scaling_group_state #=> String
resp.activities[0].auto_scaling_group_arn #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :activity_ids (Array<String>) —

    The activity IDs of the desired scaling activities. If you omit this property, all activities for the past six weeks are described. If unknown activities are requested, they are ignored with no error. If you specify an Auto Scaling group, the results are limited to that group.

    Array Members: Maximum number of 50 IDs.

  • :auto_scaling_group_name (String) —

    The name of the Auto Scaling group.

  • :include_deleted_groups (Boolean) —

    Indicates whether to include scaling activity from deleted Auto Scaling groups.

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘100` and the maximum value is `100`.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4038

def describe_scaling_activities(params = {}, options = {})
  req = build_request(:describe_scaling_activities, params)
  req.send_request(options)
end

#describe_scaling_process_types(params = {}) ⇒ Types::ProcessesType

Describes the scaling process types for use with the

ResumeProcesses][1

and [SuspendProcesses] APIs.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_ResumeProcesses.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_SuspendProcesses.html

Examples:

Example: To describe the Auto Scaling process types


# This example describes the Auto Scaling process types.

resp = client.describe_scaling_process_types({
})

resp.to_h outputs the following:
{
  processes: [
    {
      process_name: "AZRebalance", 
    }, 
    {
      process_name: "AddToLoadBalancer", 
    }, 
    {
      process_name: "AlarmNotification", 
    }, 
    {
      process_name: "HealthCheck", 
    }, 
    {
      process_name: "Launch", 
    }, 
    {
      process_name: "ReplaceUnhealthy", 
    }, 
    {
      process_name: "ScheduledActions", 
    }, 
    {
      process_name: "Terminate", 
    }, 
  ], 
}

Response structure


resp.processes #=> Array
resp.processes[0].process_name #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4102

def describe_scaling_process_types(params = {}, options = {})
  req = build_request(:describe_scaling_process_types, params)
  req.send_request(options)
end

#describe_scheduled_actions(params = {}) ⇒ Types::ScheduledActionsType

Gets information about the scheduled actions that haven’t run or that have not reached their end time.

To describe the scaling activities for scheduled actions that have already run, call the [DescribeScalingActivities] API.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeScalingActivities.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe scheduled actions


# This example describes the scheduled actions for the specified Auto Scaling group.

resp = client.describe_scheduled_actions({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  scheduled_update_group_actions: [
    {
      auto_scaling_group_name: "my-auto-scaling-group", 
      desired_capacity: 4, 
      max_size: 6, 
      min_size: 2, 
      recurrence: "30 0 1 12 0", 
      scheduled_action_arn: "arn:aws:autoscaling:us-west-2:123456789012:scheduledUpdateGroupAction:8e86b655-b2e6-4410-8f29-b4f094d6871c:autoScalingGroupName/my-auto-scaling-group:scheduledActionName/my-scheduled-action", 
      scheduled_action_name: "my-scheduled-action", 
      start_time: Time.parse("2016-12-01T00:30:00Z"), 
      time: Time.parse("2016-12-01T00:30:00Z"), 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_scheduled_actions({
  auto_scaling_group_name: "XmlStringMaxLen255",
  scheduled_action_names: ["XmlStringMaxLen255"],
  start_time: Time.now,
  end_time: Time.now,
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.scheduled_update_group_actions #=> Array
resp.scheduled_update_group_actions[0].auto_scaling_group_name #=> String
resp.scheduled_update_group_actions[0].scheduled_action_name #=> String
resp.scheduled_update_group_actions[0].scheduled_action_arn #=> String
resp.scheduled_update_group_actions[0].time #=> Time
resp.scheduled_update_group_actions[0].start_time #=> Time
resp.scheduled_update_group_actions[0].end_time #=> Time
resp.scheduled_update_group_actions[0].recurrence #=> String
resp.scheduled_update_group_actions[0].min_size #=> Integer
resp.scheduled_update_group_actions[0].max_size #=> Integer
resp.scheduled_update_group_actions[0].desired_capacity #=> Integer
resp.scheduled_update_group_actions[0].time_zone #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (String) —

    The name of the Auto Scaling group.

  • :scheduled_action_names (Array<String>) —

    The names of one or more scheduled actions. If you omit this property, all scheduled actions are described. If you specify an unknown scheduled action, it is ignored with no error.

    Array Members: Maximum number of 50 actions.

  • :start_time (Time, DateTime, Date, Integer, String) —

    The earliest scheduled start time to return. If scheduled action names are provided, this property is ignored.

  • :end_time (Time, DateTime, Date, Integer, String) —

    The latest scheduled start time to return. If scheduled action names are provided, this property is ignored.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `100`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4207

def describe_scheduled_actions(params = {}, options = {})
  req = build_request(:describe_scheduled_actions, params)
  req.send_request(options)
end

#describe_tags(params = {}) ⇒ Types::TagsType

Describes the specified tags.

You can use filters to limit the results. For example, you can query for the tags for a specific Auto Scaling group. You can specify multiple values for a filter. A tag must match at least one of the specified values for it to be included in the results.

You can also specify multiple filters. The result includes information for a particular tag only if it matches all the filters. If there’s no match, no special message is returned.

For more information, see [Tag Auto Scaling groups and instances] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-tagging.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe tags


# This example describes the tags for the specified Auto Scaling group.

resp = client.describe_tags({
  filters: [
    {
      name: "auto-scaling-group", 
      values: [
        "my-auto-scaling-group", 
      ], 
    }, 
  ], 
})

resp.to_h outputs the following:
{
  tags: [
    {
      key: "Dept", 
      propagate_at_launch: true, 
      resource_id: "my-auto-scaling-group", 
      resource_type: "auto-scaling-group", 
      value: "Research", 
    }, 
    {
      key: "Role", 
      propagate_at_launch: true, 
      resource_id: "my-auto-scaling-group", 
      resource_type: "auto-scaling-group", 
      value: "WebServer", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_tags({
  filters: [
    {
      name: "XmlString",
      values: ["XmlString"],
    },
  ],
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.tags #=> Array
resp.tags[0].resource_id #=> String
resp.tags[0].resource_type #=> String
resp.tags[0].key #=> String
resp.tags[0].value #=> String
resp.tags[0].propagate_at_launch #=> Boolean
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :filters (Array<Types::Filter>) —

    One or more filters to scope the tags to return. The maximum number of filters per filter type (for example, ‘auto-scaling-group`) is 1000.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The default value is ‘50` and the maximum value is `100`.

Returns:

  • (Types::TagsType) —

    Returns a response object which responds to the following methods:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4312

def describe_tags(params = {}, options = {})
  req = build_request(:describe_tags, params)
  req.send_request(options)
end

#describe_termination_policy_types(params = {}) ⇒ Types::DescribeTerminationPolicyTypesAnswer

Describes the termination policies supported by Amazon EC2 Auto Scaling.

For more information, see [Configure termination policies for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-termination-policies.html

Examples:

Example: To describe termination policy types


# This example describes the available termination policy types.

resp = client.describe_termination_policy_types({
})

resp.to_h outputs the following:
{
  termination_policy_types: [
    "ClosestToNextInstanceHour", 
    "Default", 
    "NewestInstance", 
    "OldestInstance", 
    "OldestLaunchConfiguration", 
  ], 
}

Response structure


resp.termination_policy_types #=> Array
resp.termination_policy_types[0] #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4359

def describe_termination_policy_types(params = {}, options = {})
  req = build_request(:describe_termination_policy_types, params)
  req.send_request(options)
end

#describe_traffic_sources(params = {}) ⇒ Types::DescribeTrafficSourcesResponse

Gets information about the traffic sources for the specified Auto Scaling group.

You can optionally provide a traffic source type. If you provide a traffic source type, then the results only include that traffic source type.

If you do not provide a traffic source type, then the results include all the traffic sources for the specified Auto Scaling group.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Example: To describe the target groups for an Auto Scaling group


# This example describes the target groups attached to the specified Auto Scaling group.

resp = client.describe_traffic_sources({
  auto_scaling_group_name: "my-auto-scaling-group", 
})

resp.to_h outputs the following:
{
  next_token: "", 
  traffic_sources: [
    {
      identifier: "arn:aws:vpc-lattice:us-west-2:123456789012:targetgroup/tg-0e2f2665eEXAMPLE", 
      state: "InService", 
      type: "vpc-lattice", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.describe_traffic_sources({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  traffic_source_type: "XmlStringMaxLen255",
  next_token: "XmlString",
  max_records: 1,
})

Response structure


resp.traffic_sources #=> Array
resp.traffic_sources[0].traffic_source #=> String
resp.traffic_sources[0].state #=> String
resp.traffic_sources[0].identifier #=> String
resp.traffic_sources[0].type #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :traffic_source_type (String) —

    The traffic source type that you want to describe.

    The following lists the valid values:

    • ‘elb` if the traffic source is a Classic Load Balancer.

    • ‘elbv2` if the traffic source is a Application Load Balancer, Gateway Load Balancer, or Network Load Balancer.

    • ‘vpc-lattice` if the traffic source is VPC Lattice.

  • :next_token (String) —

    The token for the next set of items to return. (You received this token from a previous call.)

  • :max_records (Integer) —

    The maximum number of items to return with this call. The maximum value is ‘50`.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4447

def describe_traffic_sources(params = {}, options = {})
  req = build_request(:describe_traffic_sources, params)
  req.send_request(options)
end

#describe_warm_pool(params = {}) ⇒ Types::DescribeWarmPoolAnswer

Gets information about a warm pool and its instances.

For more information, see [Warm pools for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-warm-pools.html

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.describe_warm_pool({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  max_records: 1,
  next_token: "XmlString",
})

Response structure


resp.warm_pool_configuration.max_group_prepared_capacity #=> Integer
resp.warm_pool_configuration.min_size #=> Integer
resp.warm_pool_configuration.pool_state #=> String, one of "Stopped", "Running", "Hibernated"
resp.warm_pool_configuration.status #=> String, one of "PendingDelete"
resp.warm_pool_configuration.instance_reuse_policy.reuse_on_scale_in #=> Boolean
resp.instances #=> Array
resp.instances[0].instance_id #=> String
resp.instances[0].instance_type #=> String
resp.instances[0].availability_zone #=> String
resp.instances[0].lifecycle_state #=> String, one of "Pending", "Pending:Wait", "Pending:Proceed", "Quarantined", "InService", "Terminating", "Terminating:Wait", "Terminating:Proceed", "Terminated", "Detaching", "Detached", "EnteringStandby", "Standby", "Warmed:Pending", "Warmed:Pending:Wait", "Warmed:Pending:Proceed", "Warmed:Terminating", "Warmed:Terminating:Wait", "Warmed:Terminating:Proceed", "Warmed:Terminated", "Warmed:Stopped", "Warmed:Running", "Warmed:Hibernated"
resp.instances[0].health_status #=> String
resp.instances[0].launch_configuration_name #=> String
resp.instances[0].launch_template.launch_template_id #=> String
resp.instances[0].launch_template.launch_template_name #=> String
resp.instances[0].launch_template.version #=> String
resp.instances[0].protected_from_scale_in #=> Boolean
resp.instances[0].weighted_capacity #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :max_records (Integer) —

    The maximum number of instances to return with this call. The maximum value is ‘50`.

  • :next_token (String) —

    The token for the next set of instances to return. (You received this token from a previous call.)

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4513

def describe_warm_pool(params = {}, options = {})
  req = build_request(:describe_warm_pool, params)
  req.send_request(options)
end

#detach_instances(params = {}) ⇒ Types::DetachInstancesAnswer

Removes one or more instances from the specified Auto Scaling group.

After the instances are detached, you can manage them independent of the Auto Scaling group.

If you do not specify the option to decrement the desired capacity, Amazon EC2 Auto Scaling launches instances to replace the ones that are detached.

If there is a Classic Load Balancer attached to the Auto Scaling group, the instances are deregistered from the load balancer. If there are target groups attached to the Auto Scaling group, the instances are deregistered from the target groups.

For more information, see [Detach or attach instances] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-detach-attach-instances.html

Examples:

Example: To detach an instance from an Auto Scaling group


# This example detaches the specified instance from the specified Auto Scaling group.

resp = client.detach_instances({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_ids: [
    "i-93633f9b", 
  ], 
  should_decrement_desired_capacity: true, 
})

resp.to_h outputs the following:
{
  activities: [
    {
      activity_id: "5091cb52-547a-47ce-a236-c9ccbc2cb2c9", 
      auto_scaling_group_name: "my-auto-scaling-group", 
      cause: "At 2015-04-12T15:02:16Z instance i-93633f9b was detached in response to a user request, shrinking the capacity from 2 to 1.", 
      description: "Detaching EC2 instance: i-93633f9b", 
      details: "details", 
      progress: 50, 
      start_time: Time.parse("2015-04-12T15:02:16.179Z"), 
      status_code: "InProgress", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.detach_instances({
  instance_ids: ["XmlStringMaxLen19"],
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  should_decrement_desired_capacity: false, # required
})

Response structure


resp.activities #=> Array
resp.activities[0].activity_id #=> String
resp.activities[0].auto_scaling_group_name #=> String
resp.activities[0].description #=> String
resp.activities[0].cause #=> String
resp.activities[0].start_time #=> Time
resp.activities[0].end_time #=> Time
resp.activities[0].status_code #=> String, one of "PendingSpotBidPlacement", "WaitingForSpotInstanceRequestId", "WaitingForSpotInstanceId", "WaitingForInstanceId", "PreInService", "InProgress", "WaitingForELBConnectionDraining", "MidLifecycleAction", "WaitingForInstanceWarmup", "Successful", "Failed", "Cancelled", "WaitingForConnectionDraining"
resp.activities[0].status_message #=> String
resp.activities[0].progress #=> Integer
resp.activities[0].details #=> String
resp.activities[0].auto_scaling_group_state #=> String
resp.activities[0].auto_scaling_group_arn #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_ids (Array<String>) —

    The IDs of the instances. You can specify up to 20 instances.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :should_decrement_desired_capacity (required, Boolean) —

    Indicates whether the Auto Scaling group decrements the desired capacity value by the number of instances detached.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4610

def detach_instances(params = {}, options = {})
  req = build_request(:detach_instances, params)
  req.send_request(options)
end

#detach_load_balancer_target_groups(params = {}) ⇒ Struct

<note markdown=“1”> This API operation is superseded by [DetachTrafficSources], which can detach multiple traffic sources types. We recommend using ‘DetachTrafficSources` to simplify how you manage traffic sources. However, we continue to support `DetachLoadBalancerTargetGroups`. You can use both the original `DetachLoadBalancerTargetGroups` API operation and `DetachTrafficSources` on the same Auto Scaling group.

</note>

Detaches one or more target groups from the specified Auto Scaling group.

When you detach a target group, it enters the ‘Removing` state while deregistering the instances in the group. When all instances are deregistered, then you can no longer describe the target group using the [DescribeLoadBalancerTargetGroups] API call. The instances remain running.

<note markdown=“1”> You can use this operation to detach target groups that were attached by using [AttachLoadBalancerTargetGroups], but not for target groups that were attached by using [AttachTrafficSources].

</note>

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeLoadBalancerTargetGroups.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachLoadBalancerTargetGroups.html [4]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_AttachTrafficSources.html

Examples:

Example: To detach a target group from an Auto Scaling group


# This example detaches the specified target group from the specified Auto Scaling group

resp = client.detach_load_balancer_target_groups({
  auto_scaling_group_name: "my-auto-scaling-group", 
  target_group_arns: [
    "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067", 
  ], 
})

Request syntax with placeholder values


resp = client.detach_load_balancer_target_groups({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  target_group_arns: ["XmlStringMaxLen511"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :target_group_arns (required, Array<String>) —

    The Amazon Resource Names (ARN) of the target groups. You can specify up to 10 target groups.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4678

def detach_load_balancer_target_groups(params = {}, options = {})
  req = build_request(:detach_load_balancer_target_groups, params)
  req.send_request(options)
end

#detach_load_balancers(params = {}) ⇒ Struct

<note markdown=“1”> This API operation is superseded by [DetachTrafficSources], which can detach multiple traffic sources types. We recommend using ‘DetachTrafficSources` to simplify how you manage traffic sources. However, we continue to support `DetachLoadBalancers`. You can use both the original `DetachLoadBalancers` API operation and `DetachTrafficSources` on the same Auto Scaling group.

</note>

Detaches one or more Classic Load Balancers from the specified Auto Scaling group.

This operation detaches only Classic Load Balancers. If you have Application Load Balancers, Network Load Balancers, or Gateway Load Balancers, use the [DetachLoadBalancerTargetGroups] API instead.

When you detach a load balancer, it enters the ‘Removing` state while deregistering the instances in the group. When all instances are deregistered, then you can no longer describe the load balancer using the [DescribeLoadBalancers] API call. The instances remain running.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DetachTrafficSources.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DetachLoadBalancerTargetGroups.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeLoadBalancers.html

Examples:

Example: To detach a load balancer from an Auto Scaling group


# This example detaches the specified load balancer from the specified Auto Scaling group.

resp = client.detach_load_balancers({
  auto_scaling_group_name: "my-auto-scaling-group", 
  load_balancer_names: [
    "my-load-balancer", 
  ], 
})

Request syntax with placeholder values


resp = client.detach_load_balancers({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  load_balancer_names: ["XmlStringMaxLen255"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :load_balancer_names (required, Array<String>) —

    The names of the load balancers. You can specify up to 10 load balancers.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4742

def detach_load_balancers(params = {}, options = {})
  req = build_request(:detach_load_balancers, params)
  req.send_request(options)
end

#detach_traffic_sources(params = {}) ⇒ Struct

Detaches one or more traffic sources from the specified Auto Scaling group.

When you detach a traffic source, it enters the ‘Removing` state while deregistering the instances in the group. When all instances are deregistered, then you can no longer describe the traffic source using the [DescribeTrafficSources] API call. The instances continue to run.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeTrafficSources.html

Examples:

Example: To detach a target group from an Auto Scaling group


# This example detaches the specified target group from the specified Auto Scaling group.

resp = client.detach_traffic_sources({
  auto_scaling_group_name: "my-auto-scaling-group", 
  traffic_sources: [
    {
      identifier: "arn:aws:elasticloadbalancing:us-west-2:123456789012:targetgroup/my-targets/73e2d6bc24d8a067", 
    }, 
  ], 
})

resp.to_h outputs the following:
{
}

Request syntax with placeholder values


resp = client.detach_traffic_sources({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  traffic_sources: [ # required
    {
      identifier: "XmlStringMaxLen511", # required
      type: "XmlStringMaxLen511",
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :traffic_sources (required, Array<Types::TrafficSourceIdentifier>) —

    The unique identifiers of one or more traffic sources. You can specify up to 10 traffic sources.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4803

def detach_traffic_sources(params = {}, options = {})
  req = build_request(:detach_traffic_sources, params)
  req.send_request(options)
end

#disable_metrics_collection(params = {}) ⇒ Struct

Disables group metrics collection for the specified Auto Scaling group.

Examples:

Example: To disable metrics collection for an Auto Scaling group


# This example disables collecting data for the GroupDesiredCapacity metric for the specified Auto Scaling group.

resp = client.disable_metrics_collection({
  auto_scaling_group_name: "my-auto-scaling-group", 
  metrics: [
    "GroupDesiredCapacity", 
  ], 
})

Request syntax with placeholder values


resp = client.disable_metrics_collection({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  metrics: ["XmlStringMaxLen255"],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :metrics (Array<String>) —

    Identifies the metrics to disable.

    You can specify one or more of the following metrics:

    • ‘GroupMinSize`

    • ‘GroupMaxSize`

    • ‘GroupDesiredCapacity`

    • ‘GroupInServiceInstances`

    • ‘GroupPendingInstances`

    • ‘GroupStandbyInstances`

    • ‘GroupTerminatingInstances`

    • ‘GroupTotalInstances`

    • ‘GroupInServiceCapacity`

    • ‘GroupPendingCapacity`

    • ‘GroupStandbyCapacity`

    • ‘GroupTerminatingCapacity`

    • ‘GroupTotalCapacity`

    • ‘WarmPoolDesiredCapacity`

    • ‘WarmPoolWarmedCapacity`

    • ‘WarmPoolPendingCapacity`

    • ‘WarmPoolTerminatingCapacity`

    • ‘WarmPoolTotalCapacity`

    • ‘GroupAndWarmPoolDesiredCapacity`

    • ‘GroupAndWarmPoolTotalCapacity`

    If you omit this property, all metrics are disabled.

    For more information, see [Amazon CloudWatch metrics for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-metrics.html

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4893

def disable_metrics_collection(params = {}, options = {})
  req = build_request(:disable_metrics_collection, params)
  req.send_request(options)
end

#enable_metrics_collection(params = {}) ⇒ Struct

Enables group metrics collection for the specified Auto Scaling group.

You can use these metrics to track changes in an Auto Scaling group and to set alarms on threshold values. You can view group metrics using the Amazon EC2 Auto Scaling console or the CloudWatch console. For more information, see [Monitor CloudWatch metrics for your Auto Scaling groups and instances] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-cloudwatch-monitoring.html

Examples:

Example: To enable metrics collection for an Auto Scaling group


# This example enables data collection for the specified Auto Scaling group.

resp = client.enable_metrics_collection({
  auto_scaling_group_name: "my-auto-scaling-group", 
  granularity: "1Minute", 
})

Request syntax with placeholder values


resp = client.enable_metrics_collection({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  metrics: ["XmlStringMaxLen255"],
  granularity: "XmlStringMaxLen255", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :metrics (Array<String>) —

    Identifies the metrics to enable.

    You can specify one or more of the following metrics:

    • ‘GroupMinSize`

    • ‘GroupMaxSize`

    • ‘GroupDesiredCapacity`

    • ‘GroupInServiceInstances`

    • ‘GroupPendingInstances`

    • ‘GroupStandbyInstances`

    • ‘GroupTerminatingInstances`

    • ‘GroupTotalInstances`

    • ‘GroupInServiceCapacity`

    • ‘GroupPendingCapacity`

    • ‘GroupStandbyCapacity`

    • ‘GroupTerminatingCapacity`

    • ‘GroupTotalCapacity`

    • ‘WarmPoolDesiredCapacity`

    • ‘WarmPoolWarmedCapacity`

    • ‘WarmPoolPendingCapacity`

    • ‘WarmPoolTerminatingCapacity`

    • ‘WarmPoolTotalCapacity`

    • ‘GroupAndWarmPoolDesiredCapacity`

    • ‘GroupAndWarmPoolTotalCapacity`

    If you specify ‘Granularity` and don’t specify any metrics, all metrics are enabled.

    For more information, see [Amazon CloudWatch metrics for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-metrics.html

  • :granularity (required, String) —

    The frequency at which Amazon EC2 Auto Scaling sends aggregated data to CloudWatch. The only valid value is ‘1Minute`.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 4997

def enable_metrics_collection(params = {}, options = {})
  req = build_request(:enable_metrics_collection, params)
  req.send_request(options)
end

#enter_standby(params = {}) ⇒ Types::EnterStandbyAnswer

Moves the specified instances into the standby state.

If you choose to decrement the desired capacity of the Auto Scaling group, the instances can enter standby as long as the desired capacity of the Auto Scaling group after the instances are placed into standby is equal to or greater than the minimum capacity of the group.

If you choose not to decrement the desired capacity of the Auto Scaling group, the Auto Scaling group launches new instances to replace the instances on standby.

For more information, see [Temporarily removing instances from your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-enter-exit-standby.html

Examples:

Example: To move instances into standby mode


# This example puts the specified instance into standby mode.

resp = client.enter_standby({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_ids: [
    "i-93633f9b", 
  ], 
  should_decrement_desired_capacity: true, 
})

resp.to_h outputs the following:
{
  activities: [
    {
      activity_id: "ffa056b4-6ed3-41ba-ae7c-249dfae6eba1", 
      auto_scaling_group_name: "my-auto-scaling-group", 
      cause: "At 2015-04-12T15:10:23Z instance i-93633f9b was moved to standby in response to a user request, shrinking the capacity from 2 to 1.", 
      description: "Moving EC2 instance to Standby: i-93633f9b", 
      details: "details", 
      progress: 50, 
      start_time: Time.parse("2015-04-12T15:10:23.640Z"), 
      status_code: "InProgress", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.enter_standby({
  instance_ids: ["XmlStringMaxLen19"],
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  should_decrement_desired_capacity: false, # required
})

Response structure


resp.activities #=> Array
resp.activities[0].activity_id #=> String
resp.activities[0].auto_scaling_group_name #=> String
resp.activities[0].description #=> String
resp.activities[0].cause #=> String
resp.activities[0].start_time #=> Time
resp.activities[0].end_time #=> Time
resp.activities[0].status_code #=> String, one of "PendingSpotBidPlacement", "WaitingForSpotInstanceRequestId", "WaitingForSpotInstanceId", "WaitingForInstanceId", "PreInService", "InProgress", "WaitingForELBConnectionDraining", "MidLifecycleAction", "WaitingForInstanceWarmup", "Successful", "Failed", "Cancelled", "WaitingForConnectionDraining"
resp.activities[0].status_message #=> String
resp.activities[0].progress #=> Integer
resp.activities[0].details #=> String
resp.activities[0].auto_scaling_group_state #=> String
resp.activities[0].auto_scaling_group_arn #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_ids (Array<String>) —

    The IDs of the instances. You can specify up to 20 instances.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :should_decrement_desired_capacity (required, Boolean) —

    Indicates whether to decrement the desired capacity of the Auto Scaling group by the number of instances moved to ‘Standby` mode.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5091

def enter_standby(params = {}, options = {})
  req = build_request(:enter_standby, params)
  req.send_request(options)
end

#execute_policy(params = {}) ⇒ Struct

Executes the specified policy. This can be useful for testing the design of your scaling policy.

Examples:

Example: To execute a scaling policy


# This example executes the specified policy.

resp = client.execute_policy({
  auto_scaling_group_name: "my-auto-scaling-group", 
  breach_threshold: 50.0, 
  metric_value: 59.0, 
  policy_name: "my-step-scale-out-policy", 
})

Request syntax with placeholder values


resp = client.execute_policy({
  auto_scaling_group_name: "XmlStringMaxLen255",
  policy_name: "ResourceName", # required
  honor_cooldown: false,
  metric_value: 1.0,
  breach_threshold: 1.0,
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (String) —

    The name of the Auto Scaling group.

  • :policy_name (required, String) —

    The name or ARN of the policy.

  • :honor_cooldown (Boolean) —

    Indicates whether Amazon EC2 Auto Scaling waits for the cooldown period to complete before executing the policy.

    Valid only if the policy type is ‘SimpleScaling`. For more information, see [Scaling cooldowns for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-cooldowns.html

  • :metric_value (Float) —

    The metric value to compare to ‘BreachThreshold`. This enables you to execute a policy of type `StepScaling` and determine which step adjustment to use. For example, if the breach threshold is 50 and you want to use a step adjustment with a lower bound of 0 and an upper bound of 10, you can set the metric value to 59.

    If you specify a metric value that doesn’t correspond to a step adjustment for the policy, the call returns an error.

    Required if the policy type is ‘StepScaling` and not supported otherwise.

  • :breach_threshold (Float) —

    The breach threshold for the alarm.

    Required if the policy type is ‘StepScaling` and not supported otherwise.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5164

def execute_policy(params = {}, options = {})
  req = build_request(:execute_policy, params)
  req.send_request(options)
end

#exit_standby(params = {}) ⇒ Types::ExitStandbyAnswer

Moves the specified instances out of the standby state.

After you put the instances back in service, the desired capacity is incremented.

For more information, see [Temporarily removing instances from your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-enter-exit-standby.html

Examples:

Example: To move instances out of standby mode


# This example moves the specified instance out of standby mode.

resp = client.exit_standby({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_ids: [
    "i-93633f9b", 
  ], 
})

resp.to_h outputs the following:
{
  activities: [
    {
      activity_id: "142928e1-a2dc-453a-9b24-b85ad6735928", 
      auto_scaling_group_name: "my-auto-scaling-group", 
      cause: "At 2015-04-12T15:14:29Z instance i-93633f9b was moved out of standby in response to a user request, increasing the capacity from 1 to 2.", 
      description: "Moving EC2 instance out of Standby: i-93633f9b", 
      details: "details", 
      progress: 30, 
      start_time: Time.parse("2015-04-12T15:14:29.886Z"), 
      status_code: "PreInService", 
    }, 
  ], 
}

Request syntax with placeholder values


resp = client.exit_standby({
  instance_ids: ["XmlStringMaxLen19"],
  auto_scaling_group_name: "XmlStringMaxLen255", # required
})

Response structure


resp.activities #=> Array
resp.activities[0].activity_id #=> String
resp.activities[0].auto_scaling_group_name #=> String
resp.activities[0].description #=> String
resp.activities[0].cause #=> String
resp.activities[0].start_time #=> Time
resp.activities[0].end_time #=> Time
resp.activities[0].status_code #=> String, one of "PendingSpotBidPlacement", "WaitingForSpotInstanceRequestId", "WaitingForSpotInstanceId", "WaitingForInstanceId", "PreInService", "InProgress", "WaitingForELBConnectionDraining", "MidLifecycleAction", "WaitingForInstanceWarmup", "Successful", "Failed", "Cancelled", "WaitingForConnectionDraining"
resp.activities[0].status_message #=> String
resp.activities[0].progress #=> Integer
resp.activities[0].details #=> String
resp.activities[0].auto_scaling_group_state #=> String
resp.activities[0].auto_scaling_group_arn #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_ids (Array<String>) —

    The IDs of the instances. You can specify up to 20 instances.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5246

def exit_standby(params = {}, options = {})
  req = build_request(:exit_standby, params)
  req.send_request(options)
end

#get_predictive_scaling_forecast(params = {}) ⇒ Types::GetPredictiveScalingForecastAnswer

Retrieves the forecast data for a predictive scaling policy.

Load forecasts are predictions of the hourly load values using historical load data from CloudWatch and an analysis of historical trends. Capacity forecasts are represented as predicted values for the minimum capacity that is needed on an hourly basis, based on the hourly load forecast.

A minimum of 24 hours of data is required to create the initial forecasts. However, having a full 14 days of historical data results in more accurate forecasts.

For more information, see [Predictive scaling for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-predictive-scaling.html

Examples:

Request syntax with placeholder values


resp = client.get_predictive_scaling_forecast({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  policy_name: "XmlStringMaxLen255", # required
  start_time: Time.now, # required
  end_time: Time.now, # required
})

Response structure


resp.load_forecast #=> Array
resp.load_forecast[0].timestamps #=> Array
resp.load_forecast[0].timestamps[0] #=> Time
resp.load_forecast[0].values #=> Array
resp.load_forecast[0].values[0] #=> Float
resp.load_forecast[0].metric_specification.target_value #=> Float
resp.load_forecast[0].metric_specification.predefined_metric_pair_specification.predefined_metric_type #=> String, one of "ASGCPUUtilization", "ASGNetworkIn", "ASGNetworkOut", "ALBRequestCount"
resp.load_forecast[0].metric_specification.predefined_metric_pair_specification.resource_label #=> String
resp.load_forecast[0].metric_specification.predefined_scaling_metric_specification.predefined_metric_type #=> String, one of "ASGAverageCPUUtilization", "ASGAverageNetworkIn", "ASGAverageNetworkOut", "ALBRequestCountPerTarget"
resp.load_forecast[0].metric_specification.predefined_scaling_metric_specification.resource_label #=> String
resp.load_forecast[0].metric_specification.predefined_load_metric_specification.predefined_metric_type #=> String, one of "ASGTotalCPUUtilization", "ASGTotalNetworkIn", "ASGTotalNetworkOut", "ALBTargetGroupRequestCount"
resp.load_forecast[0].metric_specification.predefined_load_metric_specification.resource_label #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries #=> Array
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].id #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].expression #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.stat #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].metric_stat.unit #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].label #=> String
resp.load_forecast[0].metric_specification.customized_scaling_metric_specification.metric_data_queries[0].return_data #=> Boolean
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries #=> Array
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].id #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].expression #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.stat #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].metric_stat.unit #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].label #=> String
resp.load_forecast[0].metric_specification.customized_load_metric_specification.metric_data_queries[0].return_data #=> Boolean
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries #=> Array
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].id #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].expression #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.stat #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].metric_stat.unit #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].label #=> String
resp.load_forecast[0].metric_specification.customized_capacity_metric_specification.metric_data_queries[0].return_data #=> Boolean
resp.capacity_forecast.timestamps #=> Array
resp.capacity_forecast.timestamps[0] #=> Time
resp.capacity_forecast.values #=> Array
resp.capacity_forecast.values[0] #=> Float
resp.update_time #=> Time

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :policy_name (required, String) —

    The name of the policy.

  • :start_time (required, Time, DateTime, Date, Integer, String) —

    The inclusive start time of the time range for the forecast data to get. At most, the date and time can be one year before the current date and time.

  • :end_time (required, Time, DateTime, Date, Integer, String) —

    The exclusive end time of the time range for the forecast data to get. The maximum time duration between the start and end time is 30 days.

    Although this parameter can accept a date and time that is more than two days in the future, the availability of forecast data has limits. Amazon EC2 Auto Scaling only issues forecasts for periods of two days in advance.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5365

def get_predictive_scaling_forecast(params = {}, options = {})
  req = build_request(:get_predictive_scaling_forecast, params)
  req.send_request(options)
end

#put_lifecycle_hook(params = {}) ⇒ Struct

Creates or updates a lifecycle hook for the specified Auto Scaling group.

Lifecycle hooks let you create solutions that are aware of events in the Auto Scaling instance lifecycle, and then perform a custom action on instances when the corresponding lifecycle event occurs.

This step is a part of the procedure for adding a lifecycle hook to an Auto Scaling group:

  1. (Optional) Create a launch template or launch configuration with a user data script that runs while an instance is in a wait state due to a lifecycle hook.

  2. (Optional) Create a Lambda function and a rule that allows Amazon EventBridge to invoke your Lambda function when an instance is put into a wait state due to a lifecycle hook.

  3. (Optional) Create a notification target and an IAM role. The target can be either an Amazon SQS queue or an Amazon SNS topic. The role allows Amazon EC2 Auto Scaling to publish lifecycle notifications to the target.

  4. **Create the lifecycle hook. Specify whether the hook is used when the instances launch or terminate.**

  5. If you need more time, record the lifecycle action heartbeat to keep the instance in a wait state using the

    RecordLifecycleActionHeartbeat][1

    API call.

  6. If you finish before the timeout period ends, send a callback by using the [CompleteLifecycleAction] API call.

For more information, see [Amazon EC2 Auto Scaling lifecycle hooks] in the *Amazon EC2 Auto Scaling User Guide*.

If you exceed your maximum limit of lifecycle hooks, which by default is 50 per Auto Scaling group, the call fails.

You can view the lifecycle hooks for an Auto Scaling group using the

DescribeLifecycleHooks][4

API call. If you are no longer using a

lifecycle hook, you can delete it by calling the

DeleteLifecycleHook][5

API.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_RecordLifecycleActionHeartbeat.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CompleteLifecycleAction.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html [4]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeLifecycleHooks.html [5]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DeleteLifecycleHook.html

Examples:

Example: To create a launch lifecycle hook


# This example creates a lifecycle hook for instance launch.

resp = client.put_lifecycle_hook({
  auto_scaling_group_name: "my-auto-scaling-group", 
  default_result: "CONTINUE", 
  heartbeat_timeout: 300, 
  lifecycle_hook_name: "my-launch-lifecycle-hook", 
  lifecycle_transition: "autoscaling:EC2_INSTANCE_LAUNCHING", 
})

Request syntax with placeholder values


resp = client.put_lifecycle_hook({
  lifecycle_hook_name: "AsciiStringMaxLen255", # required
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  lifecycle_transition: "LifecycleTransition",
  role_arn: "XmlStringMaxLen255",
  notification_target_arn: "NotificationTargetResourceName",
  notification_metadata: "AnyPrintableAsciiStringMaxLen4000",
  heartbeat_timeout: 1,
  default_result: "LifecycleActionResult",
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :lifecycle_hook_name (required, String) —

    The name of the lifecycle hook.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :lifecycle_transition (String) —

    The lifecycle transition. For Auto Scaling groups, there are two major lifecycle transitions.

    • To create a lifecycle hook for scale-out events, specify ‘autoscaling:EC2_INSTANCE_LAUNCHING`.

    • To create a lifecycle hook for scale-in events, specify ‘autoscaling:EC2_INSTANCE_TERMINATING`.

    Required for new lifecycle hooks, but optional when updating existing hooks.

  • :role_arn (String) —

    The ARN of the IAM role that allows the Auto Scaling group to publish to the specified notification target.

    Valid only if the notification target is an Amazon SNS topic or an Amazon SQS queue. Required for new lifecycle hooks, but optional when updating existing hooks.

  • :notification_target_arn (String) —

    The Amazon Resource Name (ARN) of the notification target that Amazon EC2 Auto Scaling uses to notify you when an instance is in a wait state for the lifecycle hook. You can specify either an Amazon SNS topic or an Amazon SQS queue.

    If you specify an empty string, this overrides the current ARN.

    This operation uses the JSON format when sending notifications to an Amazon SQS queue, and an email key-value pair format when sending notifications to an Amazon SNS topic.

    When you specify a notification target, Amazon EC2 Auto Scaling sends it a test message. Test messages contain the following additional key-value pair: ‘“Event”: “autoscaling:TEST_NOTIFICATION”`.

  • :notification_metadata (String) —

    Additional information that you want to include any time Amazon EC2 Auto Scaling sends a message to the notification target.

  • :heartbeat_timeout (Integer) —

    The maximum time, in seconds, that can elapse before the lifecycle hook times out. The range is from ‘30` to `7200` seconds. The default value is `3600` seconds (1 hour).

  • :default_result (String) —

    The action the Auto Scaling group takes when the lifecycle hook timeout elapses or if an unexpected failure occurs. The default value is ‘ABANDON`.

    Valid values: ‘CONTINUE` | `ABANDON`

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5513

def put_lifecycle_hook(params = {}, options = {})
  req = build_request(:put_lifecycle_hook, params)
  req.send_request(options)
end

#put_notification_configuration(params = {}) ⇒ Struct

Configures an Auto Scaling group to send notifications when specified events take place. Subscribers to the specified topic can have messages delivered to an endpoint such as a web server or an email address.

This configuration overwrites any existing configuration.

For more information, see [Amazon SNS notification options for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

If you exceed your maximum limit of SNS topics, which is 10 per Auto Scaling group, the call fails.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-sns-notifications.html

Examples:

Example: To add an Auto Scaling notification


# This example adds the specified notification to the specified Auto Scaling group.

resp = client.put_notification_configuration({
  auto_scaling_group_name: "my-auto-scaling-group", 
  notification_types: [
    "autoscaling:TEST_NOTIFICATION", 
  ], 
  topic_arn: "arn:aws:sns:us-west-2:123456789012:my-sns-topic", 
})

Request syntax with placeholder values


resp = client.put_notification_configuration({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  topic_arn: "XmlStringMaxLen255", # required
  notification_types: ["XmlStringMaxLen255"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :topic_arn (required, String) —

    The Amazon Resource Name (ARN) of the Amazon SNS topic.

  • :notification_types (required, Array<String>) —

    The type of event that causes the notification to be sent. To query the notification types supported by Amazon EC2 Auto Scaling, call the

    DescribeAutoScalingNotificationTypes][1

    API.

    [1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeAutoScalingNotificationTypes.html

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5577

def put_notification_configuration(params = {}, options = {})
  req = build_request(:put_notification_configuration, params)
  req.send_request(options)
end

#put_scaling_policy(params = {}) ⇒ Types::PolicyARNType

Creates or updates a scaling policy for an Auto Scaling group. Scaling policies are used to scale an Auto Scaling group based on configurable metrics. If no policies are defined, the dynamic scaling and predictive scaling features are not used.

For more information about using dynamic scaling, see [Target tracking scaling policies] and [Step and simple scaling policies] in the *Amazon EC2 Auto Scaling User Guide*.

For more information about using predictive scaling, see [Predictive scaling for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

You can view the scaling policies for an Auto Scaling group using the

DescribePolicies][4

API call. If you are no longer using a scaling

policy, you can delete it by calling the [DeletePolicy] API.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-target-tracking.html [2]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-predictive-scaling.html [4]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribePolicies.html [5]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DeletePolicy.html

Examples:

Example: To add a scaling policy to an Auto Scaling group


# This example adds the specified policy to the specified Auto Scaling group.

resp = client.put_scaling_policy({
  auto_scaling_group_name: "my-auto-scaling-group", 
  policy_name: "alb1000-target-tracking-scaling-policy", 
  policy_type: "TargetTrackingScaling", 
  target_tracking_configuration: {
    predefined_metric_specification: {
      predefined_metric_type: "ALBRequestCountPerTarget", 
      resource_label: "app/my-alb/778d41231b141a0f/targetgroup/my-alb-target-group/943f017f100becff", 
    }, 
    target_value: 1000.0, 
  }, 
})

resp.to_h outputs the following:
{
  alarms: [
    {
      alarm_arn: "arn:aws:cloudwatch:us-west-2:123456789012:alarm:TargetTracking-my-asg-AlarmHigh-fc0e4183-23ac-497e-9992-691c9980c38e", 
      alarm_name: "TargetTracking-my-asg-AlarmHigh-fc0e4183-23ac-497e-9992-691c9980c38e", 
    }, 
    {
      alarm_arn: "arn:aws:cloudwatch:us-west-2:123456789012:alarm:TargetTracking-my-asg-AlarmLow-61a39305-ed0c-47af-bd9e-471a352ee1a2", 
      alarm_name: "TargetTracking-my-asg-AlarmLow-61a39305-ed0c-47af-bd9e-471a352ee1a2", 
    }, 
  ], 
  policy_arn: "arn:aws:autoscaling:us-west-2:123456789012:scalingPolicy:228f02c2-c665-4bfd-aaac-8b04080bea3c:autoScalingGroupName/my-auto-scaling-group:policyName/alb1000-target-tracking-scaling-policy", 
}

Request syntax with placeholder values


resp = client.put_scaling_policy({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  policy_name: "XmlStringMaxLen255", # required
  policy_type: "XmlStringMaxLen64",
  adjustment_type: "XmlStringMaxLen255",
  min_adjustment_step: 1,
  min_adjustment_magnitude: 1,
  scaling_adjustment: 1,
  cooldown: 1,
  metric_aggregation_type: "XmlStringMaxLen32",
  step_adjustments: [
    {
      metric_interval_lower_bound: 1.0,
      metric_interval_upper_bound: 1.0,
      scaling_adjustment: 1, # required
    },
  ],
  estimated_instance_warmup: 1,
  target_tracking_configuration: {
    predefined_metric_specification: {
      predefined_metric_type: "ASGAverageCPUUtilization", # required, accepts ASGAverageCPUUtilization, ASGAverageNetworkIn, ASGAverageNetworkOut, ALBRequestCountPerTarget
      resource_label: "XmlStringMaxLen1023",
    },
    customized_metric_specification: {
      metric_name: "MetricName",
      namespace: "MetricNamespace",
      dimensions: [
        {
          name: "MetricDimensionName", # required
          value: "MetricDimensionValue", # required
        },
      ],
      statistic: "Average", # accepts Average, Minimum, Maximum, SampleCount, Sum
      unit: "MetricUnit",
      period: 1,
      metrics: [
        {
          id: "XmlStringMaxLen64", # required
          expression: "XmlStringMaxLen2047",
          metric_stat: {
            metric: { # required
              namespace: "MetricNamespace", # required
              metric_name: "MetricName", # required
              dimensions: [
                {
                  name: "MetricDimensionName", # required
                  value: "MetricDimensionValue", # required
                },
              ],
            },
            stat: "XmlStringMetricStat", # required
            unit: "MetricUnit",
            period: 1,
          },
          label: "XmlStringMetricLabel",
          period: 1,
          return_data: false,
        },
      ],
    },
    target_value: 1.0, # required
    disable_scale_in: false,
  },
  enabled: false,
  predictive_scaling_configuration: {
    metric_specifications: [ # required
      {
        target_value: 1.0, # required
        predefined_metric_pair_specification: {
          predefined_metric_type: "ASGCPUUtilization", # required, accepts ASGCPUUtilization, ASGNetworkIn, ASGNetworkOut, ALBRequestCount
          resource_label: "XmlStringMaxLen1023",
        },
        predefined_scaling_metric_specification: {
          predefined_metric_type: "ASGAverageCPUUtilization", # required, accepts ASGAverageCPUUtilization, ASGAverageNetworkIn, ASGAverageNetworkOut, ALBRequestCountPerTarget
          resource_label: "XmlStringMaxLen1023",
        },
        predefined_load_metric_specification: {
          predefined_metric_type: "ASGTotalCPUUtilization", # required, accepts ASGTotalCPUUtilization, ASGTotalNetworkIn, ASGTotalNetworkOut, ALBTargetGroupRequestCount
          resource_label: "XmlStringMaxLen1023",
        },
        customized_scaling_metric_specification: {
          metric_data_queries: [ # required
            {
              id: "XmlStringMaxLen255", # required
              expression: "XmlStringMaxLen1023",
              metric_stat: {
                metric: { # required
                  namespace: "MetricNamespace", # required
                  metric_name: "MetricName", # required
                  dimensions: [
                    {
                      name: "MetricDimensionName", # required
                      value: "MetricDimensionValue", # required
                    },
                  ],
                },
                stat: "XmlStringMetricStat", # required
                unit: "MetricUnit",
              },
              label: "XmlStringMetricLabel",
              return_data: false,
            },
          ],
        },
        customized_load_metric_specification: {
          metric_data_queries: [ # required
            {
              id: "XmlStringMaxLen255", # required
              expression: "XmlStringMaxLen1023",
              metric_stat: {
                metric: { # required
                  namespace: "MetricNamespace", # required
                  metric_name: "MetricName", # required
                  dimensions: [
                    {
                      name: "MetricDimensionName", # required
                      value: "MetricDimensionValue", # required
                    },
                  ],
                },
                stat: "XmlStringMetricStat", # required
                unit: "MetricUnit",
              },
              label: "XmlStringMetricLabel",
              return_data: false,
            },
          ],
        },
        customized_capacity_metric_specification: {
          metric_data_queries: [ # required
            {
              id: "XmlStringMaxLen255", # required
              expression: "XmlStringMaxLen1023",
              metric_stat: {
                metric: { # required
                  namespace: "MetricNamespace", # required
                  metric_name: "MetricName", # required
                  dimensions: [
                    {
                      name: "MetricDimensionName", # required
                      value: "MetricDimensionValue", # required
                    },
                  ],
                },
                stat: "XmlStringMetricStat", # required
                unit: "MetricUnit",
              },
              label: "XmlStringMetricLabel",
              return_data: false,
            },
          ],
        },
      },
    ],
    mode: "ForecastAndScale", # accepts ForecastAndScale, ForecastOnly
    scheduling_buffer_time: 1,
    max_capacity_breach_behavior: "HonorMaxCapacity", # accepts HonorMaxCapacity, IncreaseMaxCapacity
    max_capacity_buffer: 1,
  },
})

Response structure


resp.policy_arn #=> String
resp.alarms #=> Array
resp.alarms[0].alarm_name #=> String
resp.alarms[0].alarm_arn #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :policy_name (required, String) —

    The name of the policy.

  • :policy_type (String) —

    One of the following policy types:

    • ‘TargetTrackingScaling`

    • ‘StepScaling`

    • ‘SimpleScaling` (default)

    • ‘PredictiveScaling`

  • :adjustment_type (String) —

    Specifies how the scaling adjustment is interpreted (for example, an absolute number or a percentage). The valid values are ‘ChangeInCapacity`, `ExactCapacity`, and `PercentChangeInCapacity`.

    Required if the policy type is ‘StepScaling` or `SimpleScaling`. For more information, see [Scaling adjustment types] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html#as-scaling-adjustment

  • :min_adjustment_step (Integer) —

    Available for backward compatibility. Use ‘MinAdjustmentMagnitude` instead.

  • :min_adjustment_magnitude (Integer) —

    The minimum value to scale by when the adjustment type is ‘PercentChangeInCapacity`. For example, suppose that you create a step scaling policy to scale out an Auto Scaling group by 25 percent and you specify a `MinAdjustmentMagnitude` of 2. If the group has 4 instances and the scaling policy is performed, 25 percent of 4 is 1. However, because you specified a `MinAdjustmentMagnitude` of 2, Amazon EC2 Auto Scaling scales out the group by 2 instances.

    Valid only if the policy type is ‘StepScaling` or `SimpleScaling`. For more information, see [Scaling adjustment types] in the *Amazon EC2 Auto Scaling User Guide*.

    <note markdown=“1”> Some Auto Scaling groups use instance weights. In this case, set the ‘MinAdjustmentMagnitude` to a value that is at least as large as your largest instance weight.

    </note>

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-scaling-simple-step.html#as-scaling-adjustment

  • :scaling_adjustment (Integer) —

    The amount by which to scale, based on the specified adjustment type. A positive value adds to the current capacity while a negative number removes from the current capacity. For exact capacity, you must specify a non-negative value.

    Required if the policy type is ‘SimpleScaling`. (Not used with any other policy type.)

  • :cooldown (Integer) —

    A cooldown period, in seconds, that applies to a specific simple scaling policy. When a cooldown period is specified here, it overrides the default cooldown.

    Valid only if the policy type is ‘SimpleScaling`. For more information, see [Scaling cooldowns for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    Default: None

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-cooldowns.html

  • :metric_aggregation_type (String) —

    The aggregation type for the CloudWatch metrics. The valid values are ‘Minimum`, `Maximum`, and `Average`. If the aggregation type is null, the value is treated as `Average`.

    Valid only if the policy type is ‘StepScaling`.

  • :step_adjustments (Array<Types::StepAdjustment>) —

    A set of adjustments that enable you to scale based on the size of the alarm breach.

    Required if the policy type is ‘StepScaling`. (Not used with any other policy type.)

  • :estimated_instance_warmup (Integer) —

    *Not needed if the default instance warmup is defined for the group.*

    The estimated time, in seconds, until a newly launched instance can contribute to the CloudWatch metrics. This warm-up period applies to instances launched due to a specific target tracking or step scaling policy. When a warm-up period is specified here, it overrides the default instance warmup.

    Valid only if the policy type is ‘TargetTrackingScaling` or `StepScaling`.

    <note markdown=“1”> The default is to use the value for the default instance warmup defined for the group. If default instance warmup is null, then ‘EstimatedInstanceWarmup` falls back to the value of default cooldown.

    </note>
  • :target_tracking_configuration (Types::TargetTrackingConfiguration) —

    A target tracking scaling policy. Provides support for predefined or custom metrics.

    The following predefined metrics are available:

    • ‘ASGAverageCPUUtilization`

    • ‘ASGAverageNetworkIn`

    • ‘ASGAverageNetworkOut`

    • ‘ALBRequestCountPerTarget`

    If you specify ‘ALBRequestCountPerTarget` for the metric, you must specify the `ResourceLabel` property with the `PredefinedMetricSpecification`.

    For more information, see [TargetTrackingConfiguration] in the *Amazon EC2 Auto Scaling API Reference*.

    Required if the policy type is ‘TargetTrackingScaling`.

    [1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_TargetTrackingConfiguration.html

  • :enabled (Boolean) —

    Indicates whether the scaling policy is enabled or disabled. The default is enabled. For more information, see [Disable a scaling policy for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-enable-disable-scaling-policy.html

  • :predictive_scaling_configuration (Types::PredictiveScalingConfiguration) —

    A predictive scaling policy. Provides support for predefined and custom metrics.

    Predefined metrics include CPU utilization, network in/out, and the Application Load Balancer request count.

    For more information, see [PredictiveScalingConfiguration] in the *Amazon EC2 Auto Scaling API Reference*.

    Required if the policy type is ‘PredictiveScaling`.

    [1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_PredictiveScalingConfiguration.html

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 5985

def put_scaling_policy(params = {}, options = {})
  req = build_request(:put_scaling_policy, params)
  req.send_request(options)
end

#put_scheduled_update_group_action(params = {}) ⇒ Struct

Creates or updates a scheduled scaling action for an Auto Scaling group.

For more information, see [Scheduled scaling] in the *Amazon EC2 Auto Scaling User Guide*.

You can view the scheduled actions for an Auto Scaling group using the

DescribeScheduledActions][2

API call. If you are no longer using a

scheduled action, you can delete it by calling the

DeleteScheduledAction][3

API.

If you try to schedule your action in the past, Amazon EC2 Auto Scaling returns an error message.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scheduled-scaling.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeScheduledActions.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DeleteScheduledAction.html

Examples:

Example: To add a scheduled action to an Auto Scaling group


# This example adds the specified scheduled action to the specified Auto Scaling group.

resp = client.put_scheduled_update_group_action({
  auto_scaling_group_name: "my-auto-scaling-group", 
  desired_capacity: 4, 
  end_time: Time.parse("2014-05-12T08:00:00Z"), 
  max_size: 6, 
  min_size: 2, 
  scheduled_action_name: "my-scheduled-action", 
  start_time: Time.parse("2014-05-12T08:00:00Z"), 
})

Request syntax with placeholder values


resp = client.put_scheduled_update_group_action({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  scheduled_action_name: "XmlStringMaxLen255", # required
  time: Time.now,
  start_time: Time.now,
  end_time: Time.now,
  recurrence: "XmlStringMaxLen255",
  min_size: 1,
  max_size: 1,
  desired_capacity: 1,
  time_zone: "XmlStringMaxLen255",
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :scheduled_action_name (required, String) —

    The name of this scaling action.

  • :time (Time, DateTime, Date, Integer, String) —

    This property is no longer used.

  • :start_time (Time, DateTime, Date, Integer, String) —

    The date and time for this action to start, in YYYY-MM-DDThh:mm:ssZ format in UTC/GMT only and in quotes (for example, ‘“2021-06-01T00:00:00Z”`).

    If you specify ‘Recurrence` and `StartTime`, Amazon EC2 Auto Scaling performs the action at this time, and then performs the action based on the specified recurrence.

  • :end_time (Time, DateTime, Date, Integer, String) —

    The date and time for the recurring schedule to end, in UTC. For example, ‘“2021-06-01T00:00:00Z”`.

  • :recurrence (String) —

    The recurring schedule for this action. This format consists of five fields separated by white spaces: [Minute] [Hour] [Day_of_Month] [Month_of_Year] [Day_of_Week]. The value must be in quotes (for example, ‘“30 0 1 1,6,12 *”`). For more information about this format, see [Crontab].

    When ‘StartTime` and `EndTime` are specified with `Recurrence`, they form the boundaries of when the recurring action starts and stops.

    Cron expressions use Universal Coordinated Time (UTC) by default.

    [1]: crontab.org

  • :min_size (Integer) —

    The minimum size of the Auto Scaling group.

  • :max_size (Integer) —

    The maximum size of the Auto Scaling group.

  • :desired_capacity (Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group after the scheduled action runs and the capacity it attempts to maintain. It can scale beyond this capacity if you add more scaling conditions.

    <note markdown=“1”> You must specify at least one of the following properties: ‘MaxSize`, `MinSize`, or `DesiredCapacity`.

    </note>
  • :time_zone (String) —

    Specifies the time zone for a cron expression. If a time zone is not provided, UTC is used by default.

    Valid values are the canonical names of the IANA time zones, derived from the IANA Time Zone Database (such as ‘Etc/GMT+9` or `Pacific/Tahiti`). For more information, see [en.wikipedia.org/wiki/List_of_tz_database_time_zones][1].

    [1]: en.wikipedia.org/wiki/List_of_tz_database_time_zones

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6114

def put_scheduled_update_group_action(params = {}, options = {})
  req = build_request(:put_scheduled_update_group_action, params)
  req.send_request(options)
end

#put_warm_pool(params = {}) ⇒ Struct

Creates or updates a warm pool for the specified Auto Scaling group. A warm pool is a pool of pre-initialized EC2 instances that sits alongside the Auto Scaling group. Whenever your application needs to scale out, the Auto Scaling group can draw on the warm pool to meet its new desired capacity.

This operation must be called from the Region in which the Auto Scaling group was created.

You can view the instances in the warm pool using the

DescribeWarmPool][1

API call. If you are no longer using a warm

pool, you can delete it by calling the [DeleteWarmPool] API.

For more information, see [Warm pools for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeWarmPool.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DeleteWarmPool.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-warm-pools.html

Examples:

Example: To create a warm pool for an Auto Scaling group


# This example creates a warm pool for the specified Auto Scaling group.

resp = client.put_warm_pool({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_reuse_policy: {
    reuse_on_scale_in: true, 
  }, 
  min_size: 30, 
  pool_state: "Hibernated", 
})

Request syntax with placeholder values


resp = client.put_warm_pool({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  max_group_prepared_capacity: 1,
  min_size: 1,
  pool_state: "Stopped", # accepts Stopped, Running, Hibernated
  instance_reuse_policy: {
    reuse_on_scale_in: false,
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :max_group_prepared_capacity (Integer) —

    Specifies the maximum number of instances that are allowed to be in the warm pool or in any state except ‘Terminated` for the Auto Scaling group. This is an optional property. Specify it only if you do not want the warm pool size to be determined by the difference between the group’s maximum capacity and its desired capacity.

    If a value for ‘MaxGroupPreparedCapacity` is not specified, Amazon EC2 Auto Scaling launches and maintains the difference between the group’s maximum capacity and its desired capacity. If you specify a value for ‘MaxGroupPreparedCapacity`, Amazon EC2 Auto Scaling uses the difference between the `MaxGroupPreparedCapacity` and the desired capacity instead.

    The size of the warm pool is dynamic. Only when

    ‘MaxGroupPreparedCapacity` and `MinSize` are set to the same value does the warm pool have an absolute size.

    If the desired capacity of the Auto Scaling group is higher than the ‘MaxGroupPreparedCapacity`, the capacity of the warm pool is 0, unless you specify a value for `MinSize`. To remove a value that you previously set, include the property but specify -1 for the value.

  • :min_size (Integer) —

    Specifies the minimum number of instances to maintain in the warm pool. This helps you to ensure that there is always a certain number of warmed instances available to handle traffic spikes. Defaults to 0 if not specified.

  • :pool_state (String) —

    Sets the instance state to transition to after the lifecycle actions are complete. Default is ‘Stopped`.

  • :instance_reuse_policy (Types::InstanceReusePolicy) —

    Indicates whether instances in the Auto Scaling group can be returned to the warm pool on scale in. The default is to terminate instances in the Auto Scaling group when the group scales in.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6214

def put_warm_pool(params = {}, options = {})
  req = build_request(:put_warm_pool, params)
  req.send_request(options)
end

#record_lifecycle_action_heartbeat(params = {}) ⇒ Struct

Records a heartbeat for the lifecycle action associated with the specified token or instance. This extends the timeout by the length of time defined using the [PutLifecycleHook] API call.

This step is a part of the procedure for adding a lifecycle hook to an Auto Scaling group:

  1. (Optional) Create a launch template or launch configuration with a user data script that runs while an instance is in a wait state due to a lifecycle hook.

  2. (Optional) Create a Lambda function and a rule that allows Amazon EventBridge to invoke your Lambda function when an instance is put into a wait state due to a lifecycle hook.

  3. (Optional) Create a notification target and an IAM role. The target can be either an Amazon SQS queue or an Amazon SNS topic. The role allows Amazon EC2 Auto Scaling to publish lifecycle notifications to the target.

  4. Create the lifecycle hook. Specify whether the hook is used when the instances launch or terminate.

  5. **If you need more time, record the lifecycle action heartbeat to keep the instance in a wait state.**

  6. If you finish before the timeout period ends, send a callback by using the [CompleteLifecycleAction] API call.

For more information, see [Amazon EC2 Auto Scaling lifecycle hooks] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_PutLifecycleHook.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CompleteLifecycleAction.html [3]: docs.aws.amazon.com/autoscaling/ec2/userguide/lifecycle-hooks.html

Examples:

Example: To record a lifecycle action heartbeat


# This example records a lifecycle action heartbeat to keep the instance in a pending state.

resp = client.record_lifecycle_action_heartbeat({
  auto_scaling_group_name: "my-auto-scaling-group", 
  lifecycle_action_token: "bcd2f1b8-9a78-44d3-8a7a-4dd07d7cf635", 
  lifecycle_hook_name: "my-lifecycle-hook", 
})

Request syntax with placeholder values


resp = client.record_lifecycle_action_heartbeat({
  lifecycle_hook_name: "AsciiStringMaxLen255", # required
  auto_scaling_group_name: "ResourceName", # required
  lifecycle_action_token: "LifecycleActionToken",
  instance_id: "XmlStringMaxLen19",
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :lifecycle_hook_name (required, String) —

    The name of the lifecycle hook.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :lifecycle_action_token (String) —

    A token that uniquely identifies a specific lifecycle action associated with an instance. Amazon EC2 Auto Scaling sends this token to the notification target that you specified when you created the lifecycle hook.

  • :instance_id (String) —

    The ID of the instance.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6298

def record_lifecycle_action_heartbeat(params = {}, options = {})
  req = build_request(:record_lifecycle_action_heartbeat, params)
  req.send_request(options)
end

#resume_processes(params = {}) ⇒ Struct

Resumes the specified suspended auto scaling processes, or all suspended process, for the specified Auto Scaling group.

For more information, see [Suspend and resume Amazon EC2 Auto Scaling processes] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html

Examples:

Example: To resume Auto Scaling processes


# This example resumes the specified suspended scaling process for the specified Auto Scaling group.

resp = client.resume_processes({
  auto_scaling_group_name: "my-auto-scaling-group", 
  scaling_processes: [
    "AlarmNotification", 
  ], 
})

Request syntax with placeholder values


resp = client.resume_processes({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  scaling_processes: ["XmlStringMaxLen255"],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :scaling_processes (Array<String>) —

    One or more of the following processes:

    • ‘Launch`

    • ‘Terminate`

    • ‘AddToLoadBalancer`

    • ‘AlarmNotification`

    • ‘AZRebalance`

    • ‘HealthCheck`

    • ‘InstanceRefresh`

    • ‘ReplaceUnhealthy`

    • ‘ScheduledActions`

    If you omit this property, all processes are specified.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6364

def resume_processes(params = {}, options = {})
  req = build_request(:resume_processes, params)
  req.send_request(options)
end

#rollback_instance_refresh(params = {}) ⇒ Types::RollbackInstanceRefreshAnswer

Cancels an instance refresh that is in progress and rolls back any changes that it made. Amazon EC2 Auto Scaling replaces any instances that were replaced during the instance refresh. This restores your Auto Scaling group to the configuration that it was using before the start of the instance refresh.

This operation is part of the [instance refresh feature] in Amazon EC2 Auto Scaling, which helps you update instances in your Auto Scaling group after you make configuration changes.

A rollback is not supported in the following situations:

  • There is no desired configuration specified for the instance refresh.

  • The Auto Scaling group has a launch template that uses an Amazon Web Services Systems Manager parameter instead of an AMI ID for the ‘ImageId` property.

  • The Auto Scaling group uses the launch template’s ‘$Latest` or `$Default` version.

When you receive a successful response from this operation, Amazon EC2 Auto Scaling immediately begins replacing instances. You can check the status of this operation through the [DescribeInstanceRefreshes] API operation.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-refresh.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeInstanceRefreshes.html

Examples:

Request syntax with placeholder values


resp = client.rollback_instance_refresh({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
})

Response structure


resp.instance_refresh_id #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6422

def rollback_instance_refresh(params = {}, options = {})
  req = build_request(:rollback_instance_refresh, params)
  req.send_request(options)
end

#set_desired_capacity(params = {}) ⇒ Struct

Sets the size of the specified Auto Scaling group.

If a scale-in activity occurs as a result of a new ‘DesiredCapacity` value that is lower than the current size of the group, the Auto Scaling group uses its termination policy to determine which instances to terminate.

For more information, see [Manual scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-manually.html

Examples:

Example: To set the desired capacity for an Auto Scaling group


# This example sets the desired capacity for the specified Auto Scaling group.

resp = client.set_desired_capacity({
  auto_scaling_group_name: "my-auto-scaling-group", 
  desired_capacity: 2, 
  honor_cooldown: true, 
})

Request syntax with placeholder values


resp = client.set_desired_capacity({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  desired_capacity: 1, # required
  honor_cooldown: false,
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :desired_capacity (required, Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group after this operation completes and the capacity it attempts to maintain.

  • :honor_cooldown (Boolean) —

    Indicates whether Amazon EC2 Auto Scaling waits for the cooldown period to complete before initiating a scaling activity to set your Auto Scaling group to its new capacity. By default, Amazon EC2 Auto Scaling does not honor the cooldown period during manual scaling activities.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6481

def set_desired_capacity(params = {}, options = {})
  req = build_request(:set_desired_capacity, params)
  req.send_request(options)
end

#set_instance_health(params = {}) ⇒ Struct

Sets the health status of the specified instance.

For more information, see [Set up a custom health check for your Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/set-up-a-custom-health-check.html

Examples:

Example: To set the health status of an instance


# This example sets the health status of the specified instance to Unhealthy.

resp = client.set_instance_health({
  health_status: "Unhealthy", 
  instance_id: "i-93633f9b", 
})

Request syntax with placeholder values


resp = client.set_instance_health({
  instance_id: "XmlStringMaxLen19", # required
  health_status: "XmlStringMaxLen32", # required
  should_respect_grace_period: false,
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_id (required, String) —

    The ID of the instance.

  • :health_status (required, String) —

    The health status of the instance. Set to ‘Healthy` to have the instance remain in service. Set to `Unhealthy` to have the instance be out of service. Amazon EC2 Auto Scaling terminates and replaces the unhealthy instance.

  • :should_respect_grace_period (Boolean) —

    If the Auto Scaling group of the specified instance has a ‘HealthCheckGracePeriod` specified for the group, by default, this call respects the grace period. Set this to `False`, to have the call not respect the grace period associated with the group.

    For more information about the health check grace period, see [Set the health check grace period for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/health-check-grace-period.html

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6542

def set_instance_health(params = {}, options = {})
  req = build_request(:set_instance_health, params)
  req.send_request(options)
end

#set_instance_protection(params = {}) ⇒ Struct

Updates the instance protection settings of the specified instances. This operation cannot be called on instances in a warm pool.

For more information, see [Use instance scale-in protection] in the *Amazon EC2 Auto Scaling User Guide*.

If you exceed your maximum limit of instance IDs, which is 50 per Auto Scaling group, the call fails.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-instance-protection.html

Examples:

Example: To enable instance protection for an instance


# This example enables instance protection for the specified instance.

resp = client.set_instance_protection({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_ids: [
    "i-93633f9b", 
  ], 
  protected_from_scale_in: true, 
})

Example: To disable instance protection for an instance


# This example disables instance protection for the specified instance.

resp = client.set_instance_protection({
  auto_scaling_group_name: "my-auto-scaling-group", 
  instance_ids: [
    "i-93633f9b", 
  ], 
  protected_from_scale_in: false, 
})

Request syntax with placeholder values


resp = client.set_instance_protection({
  instance_ids: ["XmlStringMaxLen19"], # required
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  protected_from_scale_in: false, # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_ids (required, Array<String>) —

    One or more instance IDs. You can specify up to 50 instances.

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :protected_from_scale_in (required, Boolean) —

    Indicates whether the instance is protected from termination by Amazon EC2 Auto Scaling when scaling in.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6609

def set_instance_protection(params = {}, options = {})
  req = build_request(:set_instance_protection, params)
  req.send_request(options)
end

#start_instance_refresh(params = {}) ⇒ Types::StartInstanceRefreshAnswer

Starts an instance refresh.

This operation is part of the [instance refresh feature] in Amazon EC2 Auto Scaling, which helps you update instances in your Auto Scaling group. This feature is helpful, for example, when you have a new AMI or a new user data script. You just need to create a new launch template that specifies the new AMI or user data script. Then start an instance refresh to immediately begin the process of updating instances in the group.

If successful, the request’s response contains a unique ID that you can use to track the progress of the instance refresh. To query its status, call the [DescribeInstanceRefreshes] API. To describe the instance refreshes that have already run, call the

DescribeInstanceRefreshes][2

API. To cancel an instance refresh that

is in progress, use the [CancelInstanceRefresh] API.

An instance refresh might fail for several reasons, such as EC2 launch failures, misconfigured health checks, or not ignoring or allowing the termination of instances that are in ‘Standby` state or protected from scale in. You can monitor for failed EC2 launches using the scaling activities. To find the scaling activities, call the

DescribeScalingActivities][4

API.

If you enable auto rollback, your Auto Scaling group will be rolled back automatically when the instance refresh fails. You can enable this feature before starting an instance refresh by specifying the ‘AutoRollback` property in the instance refresh preferences. Otherwise, to roll back an instance refresh before it finishes, use the [RollbackInstanceRefresh] API.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-instance-refresh.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeInstanceRefreshes.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_CancelInstanceRefresh.html [4]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeScalingActivities.html [5]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_RollbackInstanceRefresh.html

Examples:

Example: To start an instance refresh


# This example starts an instance refresh for the specified Auto Scaling group.

resp = client.start_instance_refresh({
  auto_scaling_group_name: "my-auto-scaling-group", 
  desired_configuration: {
    launch_template: {
      launch_template_name: "my-template-for-auto-scaling", 
      version: "$Latest", 
    }, 
  }, 
  preferences: {
    alarm_specification: {
      alarms: [
        "my-alarm", 
      ], 
    }, 
    auto_rollback: true, 
    instance_warmup: 200, 
    max_healthy_percentage: 120, 
    min_healthy_percentage: 90, 
  }, 
})

resp.to_h outputs the following:
{
  instance_refresh_id: "08b91cf7-8fa6-48af-b6a6-d227f40f1b9b", 
}

Request syntax with placeholder values


resp = client.start_instance_refresh({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  strategy: "Rolling", # accepts Rolling
  desired_configuration: {
    launch_template: {
      launch_template_id: "XmlStringMaxLen255",
      launch_template_name: "LaunchTemplateName",
      version: "XmlStringMaxLen255",
    },
    mixed_instances_policy: {
      launch_template: {
        launch_template_specification: {
          launch_template_id: "XmlStringMaxLen255",
          launch_template_name: "LaunchTemplateName",
          version: "XmlStringMaxLen255",
        },
        overrides: [
          {
            instance_type: "XmlStringMaxLen255",
            weighted_capacity: "XmlStringMaxLen32",
            launch_template_specification: {
              launch_template_id: "XmlStringMaxLen255",
              launch_template_name: "LaunchTemplateName",
              version: "XmlStringMaxLen255",
            },
            instance_requirements: {
              v_cpu_count: { # required
                min: 1, # required
                max: 1,
              },
              memory_mi_b: { # required
                min: 1, # required
                max: 1,
              },
              cpu_manufacturers: ["intel"], # accepts intel, amd, amazon-web-services, apple
              memory_gi_b_per_v_cpu: {
                min: 1.0,
                max: 1.0,
              },
              excluded_instance_types: ["ExcludedInstance"],
              instance_generations: ["current"], # accepts current, previous
              spot_max_price_percentage_over_lowest_price: 1,
              max_spot_price_as_percentage_of_optimal_on_demand_price: 1,
              on_demand_max_price_percentage_over_lowest_price: 1,
              bare_metal: "included", # accepts included, excluded, required
              burstable_performance: "included", # accepts included, excluded, required
              require_hibernate_support: false,
              network_interface_count: {
                min: 1,
                max: 1,
              },
              local_storage: "included", # accepts included, excluded, required
              local_storage_types: ["hdd"], # accepts hdd, ssd
              total_local_storage_gb: {
                min: 1.0,
                max: 1.0,
              },
              baseline_ebs_bandwidth_mbps: {
                min: 1,
                max: 1,
              },
              accelerator_types: ["gpu"], # accepts gpu, fpga, inference
              accelerator_count: {
                min: 1,
                max: 1,
              },
              accelerator_manufacturers: ["nvidia"], # accepts nvidia, amd, amazon-web-services, xilinx
              accelerator_names: ["a100"], # accepts a100, v100, k80, t4, m60, radeon-pro-v520, vu9p
              accelerator_total_memory_mi_b: {
                min: 1,
                max: 1,
              },
              network_bandwidth_gbps: {
                min: 1.0,
                max: 1.0,
              },
              allowed_instance_types: ["AllowedInstanceType"],
              baseline_performance_factors: {
                cpu: {
                  references: [
                    {
                      instance_family: "String",
                    },
                  ],
                },
              },
            },
          },
        ],
      },
      instances_distribution: {
        on_demand_allocation_strategy: "XmlString",
        on_demand_base_capacity: 1,
        on_demand_percentage_above_base_capacity: 1,
        spot_allocation_strategy: "XmlString",
        spot_instance_pools: 1,
        spot_max_price: "MixedInstanceSpotPrice",
      },
    },
  },
  preferences: {
    min_healthy_percentage: 1,
    instance_warmup: 1,
    checkpoint_percentages: [1],
    checkpoint_delay: 1,
    skip_matching: false,
    auto_rollback: false,
    scale_in_protected_instances: "Refresh", # accepts Refresh, Ignore, Wait
    standby_instances: "Terminate", # accepts Terminate, Ignore, Wait
    alarm_specification: {
      alarms: ["XmlStringMaxLen255"],
    },
    max_healthy_percentage: 1,
    bake_time: 1,
  },
})

Response structure


resp.instance_refresh_id #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :strategy (String) —

    The strategy to use for the instance refresh. The only valid value is ‘Rolling`.

  • :desired_configuration (Types::DesiredConfiguration) —

    The desired configuration. For example, the desired configuration can specify a new launch template or a new version of the current launch template.

    Once the instance refresh succeeds, Amazon EC2 Auto Scaling updates the settings of the Auto Scaling group to reflect the new desired configuration.

    <note markdown=“1”> When you specify a new launch template or a new version of the current launch template for your desired configuration, consider enabling the ‘SkipMatching` property in preferences. If it’s enabled, Amazon EC2 Auto Scaling skips replacing instances that already use the specified launch template and instance types. This can help you reduce the number of replacements that are required to apply updates.

    </note>
  • :preferences (Types::RefreshPreferences) —

    Sets your preferences for the instance refresh so that it performs as expected when you start it. Includes the instance warmup time, the minimum and maximum healthy percentages, and the behaviors that you want Amazon EC2 Auto Scaling to use if instances that are in ‘Standby` state or protected from scale in are found. You can also choose to enable additional features, such as the following:

    • Auto rollback

    • Checkpoints

    • CloudWatch alarms

    • Skip matching

    • Bake time

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6858

def start_instance_refresh(params = {}, options = {})
  req = build_request(:start_instance_refresh, params)
  req.send_request(options)
end

#suspend_processes(params = {}) ⇒ Struct

Suspends the specified auto scaling processes, or all processes, for the specified Auto Scaling group.

If you suspend either the ‘Launch` or `Terminate` process types, it can prevent other process types from functioning properly. For more information, see [Suspend and resume Amazon EC2 Auto Scaling processes] in the *Amazon EC2 Auto Scaling User Guide*.

To resume processes that have been suspended, call the

ResumeProcesses][2

API.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/as-suspend-resume-processes.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_ResumeProcesses.html

Examples:

Example: To suspend Auto Scaling processes


# This example suspends the specified scaling process for the specified Auto Scaling group.

resp = client.suspend_processes({
  auto_scaling_group_name: "my-auto-scaling-group", 
  scaling_processes: [
    "AlarmNotification", 
  ], 
})

Request syntax with placeholder values


resp = client.suspend_processes({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  scaling_processes: ["XmlStringMaxLen255"],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :scaling_processes (Array<String>) —

    One or more of the following processes:

    • ‘Launch`

    • ‘Terminate`

    • ‘AddToLoadBalancer`

    • ‘AlarmNotification`

    • ‘AZRebalance`

    • ‘HealthCheck`

    • ‘InstanceRefresh`

    • ‘ReplaceUnhealthy`

    • ‘ScheduledActions`

    If you omit this property, all processes are specified.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 6930

def suspend_processes(params = {}, options = {})
  req = build_request(:suspend_processes, params)
  req.send_request(options)
end

#terminate_instance_in_auto_scaling_group(params = {}) ⇒ Types::ActivityType

Terminates the specified instance and optionally adjusts the desired group size. This operation cannot be called on instances in a warm pool.

This call simply makes a termination request. The instance is not terminated immediately. When an instance is terminated, the instance status changes to ‘terminated`. You can’t connect to or start an instance after you’ve terminated it.

If you do not specify the option to decrement the desired capacity, Amazon EC2 Auto Scaling launches instances to replace the ones that are terminated.

By default, Amazon EC2 Auto Scaling balances instances across all Availability Zones. If you decrement the desired capacity, your Auto Scaling group can become unbalanced between Availability Zones. Amazon EC2 Auto Scaling tries to rebalance the group, and rebalancing might terminate instances in other zones. For more information, see [Manual scaling] in the *Amazon EC2 Auto Scaling User Guide*.

[1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-manually.html

Examples:

Example: To terminate an instance in an Auto Scaling group


# This example terminates the specified instance from the specified Auto Scaling group without updating the size of the
# group. Auto Scaling launches a replacement instance after the specified instance terminates.

resp = client.terminate_instance_in_auto_scaling_group({
  instance_id: "i-93633f9b", 
  should_decrement_desired_capacity: false, 
})

Request syntax with placeholder values


resp = client.terminate_instance_in_auto_scaling_group({
  instance_id: "XmlStringMaxLen19", # required
  should_decrement_desired_capacity: false, # required
})

Response structure


resp.activity.activity_id #=> String
resp.activity.auto_scaling_group_name #=> String
resp.activity.description #=> String
resp.activity.cause #=> String
resp.activity.start_time #=> Time
resp.activity.end_time #=> Time
resp.activity.status_code #=> String, one of "PendingSpotBidPlacement", "WaitingForSpotInstanceRequestId", "WaitingForSpotInstanceId", "WaitingForInstanceId", "PreInService", "InProgress", "WaitingForELBConnectionDraining", "MidLifecycleAction", "WaitingForInstanceWarmup", "Successful", "Failed", "Cancelled", "WaitingForConnectionDraining"
resp.activity.status_message #=> String
resp.activity.progress #=> Integer
resp.activity.details #=> String
resp.activity.auto_scaling_group_state #=> String
resp.activity.auto_scaling_group_arn #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :instance_id (required, String) —

    The ID of the instance.

  • :should_decrement_desired_capacity (required, Boolean) —

    Indicates whether terminating the instance also decrements the size of the Auto Scaling group.

Returns:

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 7007

def terminate_instance_in_auto_scaling_group(params = {}, options = {})
  req = build_request(:terminate_instance_in_auto_scaling_group, params)
  req.send_request(options)
end

#update_auto_scaling_group(params = {}) ⇒ Struct

**We strongly recommend that all Auto Scaling groups use launch templates to ensure full functionality for Amazon EC2 Auto Scaling and Amazon EC2.**

Updates the configuration for the specified Auto Scaling group.

To update an Auto Scaling group, specify the name of the group and the property that you want to change. Any properties that you don’t specify are not changed by this update request. The new settings take effect on any scaling activities after this call returns.

If you associate a new launch configuration or template with an Auto Scaling group, all new instances will get the updated configuration. Existing instances continue to run with the configuration that they were originally launched with. When you update a group to specify a mixed instances policy instead of a launch configuration or template, existing instances may be replaced to match the new purchasing options that you specified in the policy. For example, if the group currently has 100% On-Demand capacity and the policy specifies 50% Spot capacity, this means that half of your instances will be gradually terminated and relaunched as Spot Instances. When replacing instances, Amazon EC2 Auto Scaling launches new instances before terminating the old ones, so that updating your group does not compromise the performance or availability of your application.

Note the following about changing ‘DesiredCapacity`, `MaxSize`, or `MinSize`:

  • If a scale-in activity occurs as a result of a new ‘DesiredCapacity` value that is lower than the current size of the group, the Auto Scaling group uses its termination policy to determine which instances to terminate.

  • If you specify a new value for ‘MinSize` without specifying a value for `DesiredCapacity`, and the new `MinSize` is larger than the current size of the group, this sets the group’s ‘DesiredCapacity` to the new `MinSize` value.

  • If you specify a new value for ‘MaxSize` without specifying a value for `DesiredCapacity`, and the new `MaxSize` is smaller than the current size of the group, this sets the group’s ‘DesiredCapacity` to the new `MaxSize` value.

To see which properties have been set, call the

DescribeAutoScalingGroups][1

API. To view the scaling policies for

an Auto Scaling group, call the [DescribePolicies] API. If the group has scaling policies, you can update them by calling the

PutScalingPolicy][3

API.

[1]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribeAutoScalingGroups.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_DescribePolicies.html [3]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_PutScalingPolicy.html

Examples:

Example: To update an Auto Scaling group


# This example updates multiple properties at the same time.

resp = client.update_auto_scaling_group({
  auto_scaling_group_name: "my-auto-scaling-group", 
  launch_template: {
    launch_template_name: "my-template-for-auto-scaling", 
    version: "2", 
  }, 
  max_size: 5, 
  min_size: 1, 
  new_instances_protected_from_scale_in: true, 
})

Request syntax with placeholder values


resp = client.update_auto_scaling_group({
  auto_scaling_group_name: "XmlStringMaxLen255", # required
  launch_configuration_name: "XmlStringMaxLen255",
  launch_template: {
    launch_template_id: "XmlStringMaxLen255",
    launch_template_name: "LaunchTemplateName",
    version: "XmlStringMaxLen255",
  },
  mixed_instances_policy: {
    launch_template: {
      launch_template_specification: {
        launch_template_id: "XmlStringMaxLen255",
        launch_template_name: "LaunchTemplateName",
        version: "XmlStringMaxLen255",
      },
      overrides: [
        {
          instance_type: "XmlStringMaxLen255",
          weighted_capacity: "XmlStringMaxLen32",
          launch_template_specification: {
            launch_template_id: "XmlStringMaxLen255",
            launch_template_name: "LaunchTemplateName",
            version: "XmlStringMaxLen255",
          },
          instance_requirements: {
            v_cpu_count: { # required
              min: 1, # required
              max: 1,
            },
            memory_mi_b: { # required
              min: 1, # required
              max: 1,
            },
            cpu_manufacturers: ["intel"], # accepts intel, amd, amazon-web-services, apple
            memory_gi_b_per_v_cpu: {
              min: 1.0,
              max: 1.0,
            },
            excluded_instance_types: ["ExcludedInstance"],
            instance_generations: ["current"], # accepts current, previous
            spot_max_price_percentage_over_lowest_price: 1,
            max_spot_price_as_percentage_of_optimal_on_demand_price: 1,
            on_demand_max_price_percentage_over_lowest_price: 1,
            bare_metal: "included", # accepts included, excluded, required
            burstable_performance: "included", # accepts included, excluded, required
            require_hibernate_support: false,
            network_interface_count: {
              min: 1,
              max: 1,
            },
            local_storage: "included", # accepts included, excluded, required
            local_storage_types: ["hdd"], # accepts hdd, ssd
            total_local_storage_gb: {
              min: 1.0,
              max: 1.0,
            },
            baseline_ebs_bandwidth_mbps: {
              min: 1,
              max: 1,
            },
            accelerator_types: ["gpu"], # accepts gpu, fpga, inference
            accelerator_count: {
              min: 1,
              max: 1,
            },
            accelerator_manufacturers: ["nvidia"], # accepts nvidia, amd, amazon-web-services, xilinx
            accelerator_names: ["a100"], # accepts a100, v100, k80, t4, m60, radeon-pro-v520, vu9p
            accelerator_total_memory_mi_b: {
              min: 1,
              max: 1,
            },
            network_bandwidth_gbps: {
              min: 1.0,
              max: 1.0,
            },
            allowed_instance_types: ["AllowedInstanceType"],
            baseline_performance_factors: {
              cpu: {
                references: [
                  {
                    instance_family: "String",
                  },
                ],
              },
            },
          },
        },
      ],
    },
    instances_distribution: {
      on_demand_allocation_strategy: "XmlString",
      on_demand_base_capacity: 1,
      on_demand_percentage_above_base_capacity: 1,
      spot_allocation_strategy: "XmlString",
      spot_instance_pools: 1,
      spot_max_price: "MixedInstanceSpotPrice",
    },
  },
  min_size: 1,
  max_size: 1,
  desired_capacity: 1,
  default_cooldown: 1,
  availability_zones: ["XmlStringMaxLen255"],
  health_check_type: "XmlStringMaxLen32",
  health_check_grace_period: 1,
  placement_group: "UpdatePlacementGroupParam",
  vpc_zone_identifier: "XmlStringMaxLen5000",
  termination_policies: ["XmlStringMaxLen1600"],
  new_instances_protected_from_scale_in: false,
  service_linked_role_arn: "ResourceName",
  max_instance_lifetime: 1,
  capacity_rebalance: false,
  context: "Context",
  desired_capacity_type: "XmlStringMaxLen255",
  default_instance_warmup: 1,
  instance_maintenance_policy: {
    min_healthy_percentage: 1,
    max_healthy_percentage: 1,
  },
  availability_zone_distribution: {
    capacity_distribution_strategy: "balanced-only", # accepts balanced-only, balanced-best-effort
  },
  availability_zone_impairment_policy: {
    zonal_shift_enabled: false,
    impaired_zone_health_check_behavior: "ReplaceUnhealthy", # accepts ReplaceUnhealthy, IgnoreUnhealthy
  },
  skip_zonal_shift_validation: false,
  capacity_reservation_specification: {
    capacity_reservation_preference: "capacity-reservations-only", # accepts capacity-reservations-only, capacity-reservations-first, none, default
    capacity_reservation_target: {
      capacity_reservation_ids: ["AsciiStringMaxLen255"],
      capacity_reservation_resource_group_arns: ["ResourceName"],
    },
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :auto_scaling_group_name (required, String) —

    The name of the Auto Scaling group.

  • :launch_configuration_name (String) —

    The name of the launch configuration. If you specify ‘LaunchConfigurationName` in your update request, you can’t specify ‘LaunchTemplate` or `MixedInstancesPolicy`.

  • :launch_template (Types::LaunchTemplateSpecification) —

    The launch template and version to use to specify the updates. If you specify ‘LaunchTemplate` in your update request, you can’t specify ‘LaunchConfigurationName` or `MixedInstancesPolicy`.

  • :mixed_instances_policy (Types::MixedInstancesPolicy) —

    The mixed instances policy. For more information, see [Auto Scaling groups with multiple instance types and purchase options] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-mixed-instances-groups.html

  • :min_size (Integer) —

    The minimum size of the Auto Scaling group.

  • :max_size (Integer) —

    The maximum size of the Auto Scaling group.

    <note markdown=“1”> With a mixed instances policy that uses instance weighting, Amazon EC2 Auto Scaling may need to go above ‘MaxSize` to meet your capacity requirements. In this event, Amazon EC2 Auto Scaling will never go above `MaxSize` by more than your largest instance weight (weights that define how many units each instance contributes to the desired capacity of the group).

    </note>
  • :desired_capacity (Integer) —

    The desired capacity is the initial capacity of the Auto Scaling group after this operation completes and the capacity it attempts to maintain. This number must be greater than or equal to the minimum size of the group and less than or equal to the maximum size of the group.

  • :default_cooldown (Integer) —

    *Only needed if you use simple scaling policies.*

    The amount of time, in seconds, between one scaling activity ending and another one starting due to simple scaling policies. For more information, see [Scaling cooldowns for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-scaling-cooldowns.html

  • :availability_zones (Array<String>) —

    One or more Availability Zones for the group.

  • :health_check_type (String) —

    A comma-separated value string of one or more health check types.

    The valid values are ‘EC2`, `EBS`, `ELB`, and `VPC_LATTICE`. `EC2` is the default health check and cannot be disabled. For more information, see [Health checks for instances in an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    Only specify ‘EC2` if you must clear a value that was previously set.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-health-checks.html

  • :health_check_grace_period (Integer) —

    The amount of time, in seconds, that Amazon EC2 Auto Scaling waits before checking the health status of an EC2 instance that has come into service and marking it unhealthy due to a failed health check. This is useful if your instances do not immediately pass their health checks after they enter the ‘InService` state. For more information, see [Set the health check grace period for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/health-check-grace-period.html

  • :placement_group (String) —

    The name of an existing placement group into which to launch your instances. To remove the placement group setting, pass an empty string for ‘placement-group`. For more information about placement groups, see [Placement groups] in the *Amazon EC2 User Guide*.

    <note markdown=“1”> A cluster placement group is a logical grouping of instances within a single Availability Zone. You cannot specify multiple Availability Zones and a cluster placement group.

    </note>

    [1]: docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html

  • :vpc_zone_identifier (String) —

    A comma-separated list of subnet IDs for a virtual private cloud (VPC). If you specify ‘VPCZoneIdentifier` with `AvailabilityZones`, the subnets that you specify must reside in those Availability Zones.

  • :termination_policies (Array<String>) —

    A policy or a list of policies that are used to select the instances to terminate. The policies are executed in the order that you list them. For more information, see [Configure termination policies for Amazon EC2 Auto Scaling] in the *Amazon EC2 Auto Scaling User Guide*.

    Valid values: ‘Default` | `AllocationStrategy` | `ClosestToNextInstanceHour` | `NewestInstance` | `OldestInstance` | `OldestLaunchConfiguration` | `OldestLaunchTemplate` | `arn:aws:lambda:region:account-id:function:my-function:my-alias`

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-termination-policies.html

  • :new_instances_protected_from_scale_in (Boolean) —

    Indicates whether newly launched instances are protected from termination by Amazon EC2 Auto Scaling when scaling in. For more information about preventing instances from terminating on scale in, see [Use instance scale-in protection] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-instance-protection.html

  • :service_linked_role_arn (String) —

    The Amazon Resource Name (ARN) of the service-linked role that the Auto Scaling group uses to call other Amazon Web Services on your behalf. For more information, see [Service-linked roles] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/autoscaling-service-linked-role.html

  • :max_instance_lifetime (Integer) —

    The maximum amount of time, in seconds, that an instance can be in service. The default is null. If specified, the value must be either 0 or a number equal to or greater than 86,400 seconds (1 day). To clear a previously set value, specify a new value of 0. For more information, see [Replacing Auto Scaling instances based on maximum instance lifetime] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/asg-max-instance-lifetime.html

  • :capacity_rebalance (Boolean) —

    Enables or disables Capacity Rebalancing. If Capacity Rebalancing is disabled, proactive replacement of at-risk Spot Instances does not occur. For more information, see [Capacity Rebalancing in Auto Scaling to replace at-risk Spot Instances] in the *Amazon EC2 Auto Scaling User Guide*.

    <note markdown=“1”> To suspend rebalancing across Availability Zones, use the

    SuspendProcesses][2

    API.

    </note>

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-capacity-rebalancing.html [2]: docs.aws.amazon.com/autoscaling/ec2/APIReference/API_SuspendedProcess.html

  • :context (String) —

    Reserved.

  • :desired_capacity_type (String) —

    The unit of measurement for the value specified for desired capacity. Amazon EC2 Auto Scaling supports ‘DesiredCapacityType` for attribute-based instance type selection only. For more information, see [Create a mixed instances group using attribute-based instance type selection] in the *Amazon EC2 Auto Scaling User Guide*.

    By default, Amazon EC2 Auto Scaling specifies ‘units`, which translates into number of instances.

    Valid values: ‘units` | `vcpu` | `memory-mib`

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/create-mixed-instances-group-attribute-based-instance-type-selection.html

  • :default_instance_warmup (Integer) —

    The amount of time, in seconds, until a new instance is considered to have finished initializing and resource consumption to become stable after it enters the ‘InService` state.

    During an instance refresh, Amazon EC2 Auto Scaling waits for the warm-up period after it replaces an instance before it moves on to replacing the next instance. Amazon EC2 Auto Scaling also waits for the warm-up period before aggregating the metrics for new instances with existing instances in the Amazon CloudWatch metrics that are used for scaling, resulting in more reliable usage data. For more information, see [Set the default instance warmup for an Auto Scaling group] in the *Amazon EC2 Auto Scaling User Guide*.

    To manage various warm-up settings at the group level, we recommend that you set the default instance warmup, *even if it is set to 0 seconds*. To remove a value that you previously set, include the property but specify ‘-1` for the value. However, we strongly recommend keeping the default instance warmup enabled by specifying a value of `0` or other nominal value.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-default-instance-warmup.html

  • :instance_maintenance_policy (Types::InstanceMaintenancePolicy) —

    An instance maintenance policy. For more information, see [Set instance maintenance policy] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-instance-maintenance-policy.html

  • :availability_zone_distribution (Types::AvailabilityZoneDistribution) —

    The instance capacity distribution across Availability Zones.

  • :availability_zone_impairment_policy (Types::AvailabilityZoneImpairmentPolicy) —

    The policy for Availability Zone impairment.

  • :skip_zonal_shift_validation (Boolean) —

    If you enable zonal shift with cross-zone disabled load balancers, capacity could become imbalanced across Availability Zones. To skip the validation, specify ‘true`. For more information, see [Auto Scaling group zonal shift] in the *Amazon EC2 Auto Scaling User Guide*.

    [1]: docs.aws.amazon.com/autoscaling/ec2/userguide/ec2-auto-scaling-zonal-shift.html

  • :capacity_reservation_specification (Types::CapacityReservationSpecification) —

    The capacity reservation specification for the Auto Scaling group.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



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# File 'lib/aws-sdk-autoscaling/client.rb', line 7473

def update_auto_scaling_group(params = {}, options = {})
  req = build_request(:update_auto_scaling_group, params)
  req.send_request(options)
end

#wait_until(waiter_name, params = {}, options = {}) {|w.waiter| ... } ⇒ Boolean

Polls an API operation until a resource enters a desired state.

## Basic Usage

A waiter will call an API operation until:

  • It is successful

  • It enters a terminal state

  • It makes the maximum number of attempts

In between attempts, the waiter will sleep.

# polls in a loop, sleeping between attempts
client.wait_until(waiter_name, params)

## Configuration

You can configure the maximum number of polling attempts, and the delay (in seconds) between each polling attempt. You can pass configuration as the final arguments hash.

# poll for ~25 seconds
client.wait_until(waiter_name, params, {
  max_attempts: 5,
  delay: 5,
})

## Callbacks

You can be notified before each polling attempt and before each delay. If you throw ‘:success` or `:failure` from these callbacks, it will terminate the waiter.

started_at = Time.now
client.wait_until(waiter_name, params, {

  # disable max attempts
  max_attempts: nil,

  # poll for 1 hour, instead of a number of attempts
  before_wait: -> (attempts, response) do
    throw :failure if Time.now - started_at > 3600
  end
})

## Handling Errors

When a waiter is unsuccessful, it will raise an error. All of the failure errors extend from Waiters::Errors::WaiterFailed.

begin
  client.wait_until(...)
rescue Aws::Waiters::Errors::WaiterFailed
  # resource did not enter the desired state in time
end

## Valid Waiters

The following table lists the valid waiter names, the operations they call, and the default ‘:delay` and `:max_attempts` values.

| waiter_name | params | :delay | :max_attempts | | —————- | ————————————- | ——– | ————- | | group_exists | #describe_auto_scaling_groups | 5 | 10 | | group_in_service | #describe_auto_scaling_groups | 15 | 40 | | group_not_exists | #describe_auto_scaling_groups | 15 | 40 |

Parameters:

  • waiter_name (Symbol)
  • params (Hash) (defaults to: {}) —

    ({})

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :max_attempts (Integer)
  • :delay (Integer)
  • :before_attempt (Proc)
  • :before_wait (Proc)

Yields:

  • (w.waiter)

Returns:

  • (Boolean) —

    Returns ‘true` if the waiter was successful.

Raises:

  • (Errors::FailureStateError) —

    Raised when the waiter terminates because the waiter has entered a state that it will not transition out of, preventing success.

  • (Errors::TooManyAttemptsError) —

    Raised when the configured maximum number of attempts have been made, and the waiter is not yet successful.

  • (Errors::UnexpectedError) —

    Raised when an error is encounted while polling for a resource that is not expected.

  • (Errors::NoSuchWaiterError) —

    Raised when you request to wait for an unknown state.



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# File 'lib/aws-sdk-autoscaling/client.rb', line 7590

def wait_until(waiter_name, params = {}, options = {})
  w = waiter(waiter_name, options)
  yield(w.waiter) if block_given? # deprecated
  w.wait(params)
end

#waiter_names ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Deprecated. 


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# File 'lib/aws-sdk-autoscaling/client.rb', line 7598

def waiter_names
  waiters.keys
end