AWS::ECS::TaskDefinition TaskDefinitionPlacementConstraint

The constraint on task placement in the task definition. For more information, see Task placement constraints in the Amazon Elastic Container Service Developer Guide.

Note

Task placement constraints aren't supported for tasks run on AWS Fargate.

Syntax

To declare this entity in your AWS CloudFormation template, use the following syntax:

JSON

{
  "Expression" : String,
  "Type" : String
}

YAML

  Expression: String
  Type: String

Properties

Expression

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.

Required: No

Type: String

Update requires: Replacement

Type

The type of constraint. The MemberOf constraint restricts selection to be from a group of valid candidates.

Required: Yes

Type: String

Allowed values: memberOf

Update requires: Replacement