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Class: Aws::ECS::Types::TaskDefinitionPlacementConstraint

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 TaskDefinitionPlacementConstraint data as a hash:

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

An object representing a constraint on task placement in the task definition.

If you are using the Fargate launch type, task placement constraints are not supported.

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. 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 5455

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

#typeString

The type of constraint. The DistinctInstance constraint ensures that each task in a particular group is running on a different container instance. The MemberOf constraint restricts selection to be from a group of valid candidates.

Returns:

  • (String)


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# File 'gems/aws-sdk-ecs/lib/aws-sdk-ecs/types.rb', line 5455

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