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

Inherits:
Struct
  • Object
show all
Defined in:
gems/aws-sdk-ecs/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.

Instance Attribute Summary collapse

Instance Attribute Details

#expressionString

A cluster query language expression to apply to the constraint. Note you cannot specify an expression if the constraint type is distinctInstance. For more information, see Cluster Query Language in the Amazon Elastic Container Service Developer Guide.

Returns:

  • (String)


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# File 'gems/aws-sdk-ecs/lib/aws-sdk-ecs/types.rb', line 3538

class PlacementConstraint < Struct.new(
  :type,
  :expression)
  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. The value distinctInstance is not supported in task definitions.

Returns:

  • (String)


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# File 'gems/aws-sdk-ecs/lib/aws-sdk-ecs/types.rb', line 3538

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