Class: Aws::Route53::Types::AliasTarget

Inherits:

Struct

Object
Struct
Aws::Route53::Types::AliasTarget

Includes:: Structure

Defined in:: lib/aws-sdk-route53/types.rb

Overview

*Alias resource record sets only:* Information about the Amazon Web Services resource, such as a CloudFront distribution or an Amazon S3 bucket, that you want to route traffic to.

When creating resource record sets for a private hosted zone, note the following:

For information about creating failover resource record sets in a private hosted zone, see [Configuring Failover in a Private Hosted Zone].

[1]: docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-private-hosted-zones.html

Constant Summary collapse

SENSITIVE =

[]

Instance Attribute Summary collapse

#dns_name ⇒ String

*Alias resource record sets only:* The value that you specify depends on where you want to route queries:.
#evaluate_target_health ⇒ Boolean

*Applies only to alias, failover alias, geolocation alias, latency alias, and weighted alias resource record sets:* When ‘EvaluateTargetHealth` is `true`, an alias resource record set inherits the health of the referenced Amazon Web Services resource, such as an ELB load balancer or another resource record set in the hosted zone.
#hosted_zone_id ⇒ String

*Alias resource records sets only*: The value used depends on where you want to route traffic:.

Instance Attribute Details

#dns_name ⇒ `String`

*Alias resource record sets only:* The value that you specify depends on where you want to route queries:

Amazon API Gateway custom regional APIs and edge-optimized APIs

: Specify the applicable domain name for your API. You can get the

applicable value using the CLI command [get-domain-names][1]:

* For regional APIs, specify the value of `regionalDomainName`.

* For edge-optimized APIs, specify the value of
  `distributionDomainName`. This is the name of the associated
  CloudFront distribution, such as `da1b2c3d4e5.cloudfront.net`.

<note markdown="1"> The name of the record that you're creating must match a custom
domain name for your API, such as `api.example.com`.

 </note>

Amazon Virtual Private Cloud interface VPC endpoint

: Enter the API endpoint for the interface endpoint, such as

`vpce-123456789abcdef01-example-us-east-1a.elasticloadbalancing.us-east-1.vpce.amazonaws.com`.
For edge-optimized APIs, this is the domain name for the
corresponding CloudFront distribution. You can get the value of
`DnsName` using the CLI command [describe-vpc-endpoints][2].

CloudFront distribution

: Specify the domain name that CloudFront assigned when you created

your distribution.

Your CloudFront distribution must include an alternate domain name
that matches the name of the resource record set. For example, if
the name of the resource record set is *acme.example.com*, your
CloudFront distribution must include *acme.example.com* as one of
the alternate domain names. For more information, see [Using
Alternate Domain Names (CNAMEs)][3] in the *Amazon CloudFront
Developer Guide*.

You can't create a resource record set in a private hosted zone
to route traffic to a CloudFront distribution.

<note markdown="1"> For failover alias records, you can't specify a CloudFront
distribution for both the primary and secondary records. A
distribution must include an alternate domain name that matches
the name of the record. However, the primary and secondary records
have the same name, and you can't include the same alternate
domain name in more than one distribution.

 </note>

Elastic Beanstalk environment

: If the domain name for your Elastic Beanstalk environment includes

the region that you deployed the environment in, you can create an
alias record that routes traffic to the environment. For example,
the domain name `my-environment.us-west-2.elasticbeanstalk.com` is
a regionalized domain name.

For environments that were created before early 2016, the domain
name doesn't include the region. To route traffic to these
environments, you must create a CNAME record instead of an alias
record. Note that you can't create a CNAME record for the root
domain name. For example, if your domain name is example.com, you
can create a record that routes traffic for acme.example.com to
your Elastic Beanstalk environment, but you can't create a record
that routes traffic for example.com to your Elastic Beanstalk
environment.

For Elastic Beanstalk environments that have regionalized
subdomains, specify the `CNAME` attribute for the environment. You
can use the following methods to get the value of the CNAME
attribute:

* *Amazon Web Services Management Console*: For information about
  how to get the value by using the console, see [Using Custom
  Domains with Elastic Beanstalk][4] in the *Elastic Beanstalk
  Developer Guide*.

* *Elastic Beanstalk API*: Use the `DescribeEnvironments` action
  to get the value of the `CNAME` attribute. For more information,
  see [DescribeEnvironments][5] in the *Elastic Beanstalk API
  Reference*.

* *CLI*: Use the `describe-environments` command to get the value
  of the `CNAME` attribute. For more information, see
  [describe-environments][6] in the *CLI Command Reference*.

ELB load balancer

: Specify the DNS name that is associated with the load balancer.

Get the DNS name by using the Amazon Web Services Management
Console, the ELB API, or the CLI.

* **Amazon Web Services Management Console**: Go to the EC2 page,
  choose **Load Balancers** in the navigation pane, choose the
  load balancer, choose the **Description** tab, and get the value
  of the **DNS name** field.

  If you're routing traffic to a Classic Load Balancer, get the
  value that begins with **dualstack**. If you're routing traffic
  to another type of load balancer, get the value that applies to
  the record type, A or AAAA.

* **Elastic Load Balancing API**: Use `DescribeLoadBalancers` to
  get the value of `DNSName`. For more information, see the
  applicable guide:

  * Classic Load Balancers: [DescribeLoadBalancers][7]

  * Application and Network Load Balancers:
    [DescribeLoadBalancers][8]

* **CLI**: Use `describe-load-balancers` to get the value of
  `DNSName`. For more information, see the applicable guide:

  * Classic Load Balancers: [describe-load-balancers][9]

  * Application and Network Load Balancers:
    [describe-load-balancers][10]

Global Accelerator accelerator

: Specify the DNS name for your accelerator:

* **Global Accelerator API:** To get the DNS name, use
  [DescribeAccelerator][11].

* **CLI:** To get the DNS name, use [describe-accelerator][12].

Amazon S3 bucket that is configured as a static website

: Specify the domain name of the Amazon S3 website endpoint that you

created the bucket in, for example,
`s3-website.us-east-2.amazonaws.com`. For more information about
valid values, see the table [Amazon S3 Website Endpoints][13] in
the *Amazon Web Services General Reference*. For more information
about using S3 buckets for websites, see [Getting Started with
Amazon Route 53][14] in the *Amazon Route 53 Developer Guide.*

Another Route 53 resource record set

: Specify the value of the ‘Name` element for a resource record set

in the current hosted zone.

<note markdown="1"> If you're creating an alias record that has the same name as the
hosted zone (known as the zone apex), you can't specify the
domain name for a record for which the value of `Type` is `CNAME`.
This is because the alias record must have the same type as the
record that you're routing traffic to, and creating a CNAME
record for the zone apex isn't supported even for an alias
record.

 </note>

Returns:

(String)

# File 'lib/aws-sdk-route53/types.rb', line 523

class AliasTarget < Struct.new(
  :hosted_zone_id,
  :dns_name,
  :evaluate_target_health)
  SENSITIVE = []
  include Aws::Structure
end

#evaluate_target_health ⇒ `Boolean`

*Applies only to alias, failover alias, geolocation alias, latency alias, and weighted alias resource record sets:* When ‘EvaluateTargetHealth` is `true`, an alias resource record set inherits the health of the referenced Amazon Web Services resource, such as an ELB load balancer or another resource record set in the hosted zone.

Note the following:

CloudFront distributions

: You can’t set ‘EvaluateTargetHealth` to `true` when the alias

target is a CloudFront distribution.

Elastic Beanstalk environments that have regionalized subdomains

: If you specify an Elastic Beanstalk environment in ‘DNSName` and

the environment contains an ELB load balancer, Elastic Load
Balancing routes queries only to the healthy Amazon EC2 instances
that are registered with the load balancer. (An environment
automatically contains an ELB load balancer if it includes more
than one Amazon EC2 instance.) If you set `EvaluateTargetHealth`
to `true` and either no Amazon EC2 instances are healthy or the
load balancer itself is unhealthy, Route 53 routes queries to
other available resources that are healthy, if any.

If the environment contains a single Amazon EC2 instance, there
are no special requirements.

ELB load balancers

: Health checking behavior depends on the type of load balancer:

* **Classic Load Balancers**: If you specify an ELB Classic Load
  Balancer in `DNSName`, Elastic Load Balancing routes queries
  only to the healthy Amazon EC2 instances that are registered
  with the load balancer. If you set `EvaluateTargetHealth` to
  `true` and either no EC2 instances are healthy or the load
  balancer itself is unhealthy, Route 53 routes queries to other
  resources.

* **Application and Network Load Balancers**: If you specify an
  ELB Application or Network Load Balancer and you set
  `EvaluateTargetHealth` to `true`, Route 53 routes queries to the
  load balancer based on the health of the target groups that are
  associated with the load balancer:

  * For an Application or Network Load Balancer to be considered
    healthy, every target group that contains targets must contain
    at least one healthy target. If any target group contains only
    unhealthy targets, the load balancer is considered unhealthy,
    and Route 53 routes queries to other resources.

  * A target group that has no registered targets is considered
    unhealthy.

<note markdown="1"> When you create a load balancer, you configure settings for
Elastic Load Balancing health checks; they're not Route 53 health
checks, but they perform a similar function. Do not create Route
53 health checks for the EC2 instances that you register with an
ELB load balancer.

 </note>

S3 buckets

: There are no special requirements for setting

`EvaluateTargetHealth` to `true` when the alias target is an S3
bucket.

Other records in the same hosted zone

: If the Amazon Web Services resource that you specify in ‘DNSName`

is a record or a group of records (for example, a group of
weighted records) but is not another alias record, we recommend
that you associate a health check with all of the records in the
alias target. For more information, see [What Happens When You
Omit Health Checks?][1] in the *Amazon Route 53 Developer Guide*.

For more information and examples, see [Amazon Route 53 Health Checks and DNS Failover] in the *Amazon Route 53 Developer Guide*.

[1]: docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-complex-configs.html#dns-failover-complex-configs-hc-omitting [2]: docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover.html

Returns:

(Boolean)

# File 'lib/aws-sdk-route53/types.rb', line 523

class AliasTarget < Struct.new(
  :hosted_zone_id,
  :dns_name,
  :evaluate_target_health)
  SENSITIVE = []
  include Aws::Structure
end

#hosted_zone_id ⇒ `String`

*Alias resource records sets only*: The value used depends on where you want to route traffic:

Amazon API Gateway custom regional APIs and edge-optimized APIs

: Specify the hosted zone ID for your API. You can get the

applicable value using the CLI command [get-domain-names][1]:

* For regional APIs, specify the value of `regionalHostedZoneId`.

* For edge-optimized APIs, specify the value of
  `distributionHostedZoneId`.

Amazon Virtual Private Cloud interface VPC endpoint

: Specify the hosted zone ID for your interface endpoint. You can

get the value of `HostedZoneId` using the CLI command
[describe-vpc-endpoints][2].

CloudFront distribution

: Specify ‘Z2FDTNDATAQYW2`.

<note markdown="1"> Alias resource record sets for CloudFront can't be created in a
private zone.

 </note>

Elastic Beanstalk environment

: Specify the hosted zone ID for the region that you created the

environment in. The environment must have a regionalized
subdomain. For a list of regions and the corresponding hosted zone
IDs, see [Elastic Beanstalk endpoints and quotas][3] in the
*Amazon Web Services General Reference*.

ELB load balancer

: Specify the value of the hosted zone ID for the load balancer. Use

the following methods to get the hosted zone ID:

* [Elastic Load Balancing endpoints and quotas][4] topic in the
  *Amazon Web Services General Reference*: Use the value that
  corresponds with the region that you created your load balancer
  in. Note that there are separate columns for Application and
  Classic Load Balancers and for Network Load Balancers.

* **Amazon Web Services Management Console**: Go to the Amazon EC2
  page, choose **Load Balancers** in the navigation pane, select
  the load balancer, and get the value of the **Hosted zone**
  field on the **Description** tab.

* **Elastic Load Balancing API**: Use `DescribeLoadBalancers` to
  get the applicable value. For more information, see the
  applicable guide:

  * Classic Load Balancers: Use [DescribeLoadBalancers][5] to get
    the value of `CanonicalHostedZoneNameId`.

  * Application and Network Load Balancers: Use
    [DescribeLoadBalancers][6] to get the value of
    `CanonicalHostedZoneId`.

* **CLI**: Use `describe-load-balancers` to get the applicable
  value. For more information, see the applicable guide:

  * Classic Load Balancers: Use [describe-load-balancers][7] to
    get the value of `CanonicalHostedZoneNameId`.

  * Application and Network Load Balancers: Use
    [describe-load-balancers][8] to get the value of
    `CanonicalHostedZoneId`.

Global Accelerator accelerator

: Specify ‘Z2BJ6XQ5FK7U4H`.

An Amazon S3 bucket configured as a static website

: Specify the hosted zone ID for the region that you created the

bucket in. For more information about valid values, see the table
[Amazon S3 Website Endpoints][9] in the *Amazon Web Services
General Reference*.

Another Route 53 resource record set in your hosted zone

: Specify the hosted zone ID of your hosted zone. (An alias resource

record set can't reference a resource record set in a different
hosted zone.)

Returns:

(String)

# File 'lib/aws-sdk-route53/types.rb', line 523

class AliasTarget < Struct.new(
  :hosted_zone_id,
  :dns_name,
  :evaluate_target_health)
  SENSITIVE = []
  include Aws::Structure
end

Class: Aws::Route53::Types::AliasTarget

Overview

Constant Summary collapse

Instance Attribute Summary collapse

Instance Attribute Details

#dns_name ⇒ String

#evaluate_target_health ⇒ Boolean

#hosted_zone_id ⇒ String

#dns_name ⇒ `String`

#evaluate_target_health ⇒ `Boolean`

#hosted_zone_id ⇒ `String`