The setting:
$ docker network rm myNetwork Error response from daemon: rpc error: code = FailedPrecondition desc = network kny0nsuae9ymnpzjzufrefn9a is in use by task iczzsz7yrrafhn08y1slnhr8l
The solution:
$ docker pull dperny/tasknuke! $ docker run -v /var/run/docker/swarm/control.sock:/var/run/swarmd.sock dperny/tasknuke iczzsz7yrrafhn08y1slnhr8l iczzsz7yrrafhn08y1slnhr8l
The glorious source: success.docker.com – How to force remove an orphaned task from a network