To make sure a Docker Swarm service only runs on nodes that have specific attributes or labels, what service deployment option is configured?

The service deployment option configured to ensure a Docker Swarm service only runs on nodes with specific attributes or labels is placement constraints. Placement constraints are rules that dictate where a service's tasks can be scheduled within the Docker Swarm cluster. The Swarm manager uses these constraints to filter the available nodes, ensuring that service tasks are only deployed to nodes that meet the specified criteria. These constraints operate by evaluating node labels. A node label is a key-value pair, or sometimes just a ....