An object representing a constraint on task placement in the task definition. For more information, see Task Placement Constraints in the Amazon EC2 Container Service Developer Guide.
A cluster query language expression to apply to the constraint. For more information, see Cluster Query Language in the Amazon EC2 Container Service Developer Guide.
The type of constraint. The
DistinctInstanceconstraint ensures that each task in a particular group is running on a different container instance. The
MemberOfconstraint restricts selection to be from a group of valid candidates.
For more information about using this API in one of the language-specific AWS SDKs, see the following: