class Aws::ECS::Types::PlacementConstraint
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
@note When making an API call, you may pass PlacementConstraint
data as a hash: { type: "distinctInstance", # accepts distinctInstance, memberOf expression: "String", }
@!attribute [rw] type
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. @return [String]
@!attribute [rw] expression
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][1] in the *Amazon Elastic Container Service Developer Guide*. [1]: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/cluster-query-language.html @return [String]
@see docs.aws.amazon.com/goto/WebAPI/ecs-2014-11-13/PlacementConstraint AWS API Documentation
Constants
- SENSITIVE