Service Placement Constraint Args
The `PlacementConstraint` property specifies an object representing a constraint on task placement in the task definition. For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide.
Properties
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 in the Amazon Elastic Container Service Developer Guide.
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.