Class: Aws::ECS::Types::PlacementConstraint

Inherits:
Struct
  • Object
show all
Includes:
Structure
Defined in:
lib/aws-sdk-ecs/types.rb

Overview

Note:

When making an API call, you may pass PlacementConstraint data as a hash:

{
  type: "distinctInstance", # accepts distinctInstance, memberOf
  expression: "String",
}

An object representing a constraint on task placement. For more information, see [Task Placement Constraints] in the *Amazon Elastic Container Service Developer Guide*.

<note markdown=“1”> If you are using the Fargate launch type, task placement constraints are not supported.

</note>

[1]: docs.aws.amazon.com/AmazonECS/latest/developerguide/task-placement-constraints.html

Constant Summary collapse

SENSITIVE =
[]

Instance Attribute Summary collapse

Instance Attribute Details

#expressionString

A cluster query language expression to apply to the constraint. The expression can have a maximum length of 2000 characters. You can't specify an expression if the constraint type is `distinctInstance`. For more information, see [Cluster query language] in the *Amazon Elastic Container Service Developer Guide*.

[1]: docs.aws.amazon.com/AmazonECS/latest/developerguide/cluster-query-language.html

Returns:

  • (String)

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# File 'lib/aws-sdk-ecs/types.rb', line 7104

class PlacementConstraint < Struct.new(
  :type,
  :expression)
  SENSITIVE = []
  include Aws::Structure
end

#typeString

The type of constraint. Use `distinctInstance` to ensure that each task in a particular group is running on a different container instance. Use `memberOf` to restrict the selection to a group of valid candidates.

Returns:

  • (String)

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# File 'lib/aws-sdk-ecs/types.rb', line 7104

class PlacementConstraint < Struct.new(
  :type,
  :expression)
  SENSITIVE = []
  include Aws::Structure
end