Service tasks
Service tasks are related to flows that are in charge of making sure that services are running, that correct versions are deployed, that information is propagated to all dependencies, that they are reachable, that they behave as expected, and so on. In other words, everything related to services is under this umbrella.
We'll group service related tasks into self-healing, deployment, reconfiguration, request, and self-adaptation flows.
Self-healing flow
Docker Swarm (or any other scheduler) is taking care of self-healing. As long as there's enough hardware capacity, it will make sure that the desired number of replicas of each service is (almost) always up-and-running. If a replica goes down, it'll be rescheduled. If a whole node is destroyed or loses connection to other managers, all replicas that were running on it will be rescheduled. Self-healing comes out of the box. Still, there are quite a few other tasks we should define if we'd want our solution to be self-sufficient and...
