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

Inherits:
Struct
  • Object
show all
Defined in:
(unknown)

Overview

Note:

When passing TaskDefinitionPlacementConstraint as input to an Aws::Client method, you can use a vanilla 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 contraints 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)

    A cluster query language expression to apply to the constraint.

#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.

Possible values:

  • memberOf

Returns:

  • (String)

    The type of constraint.