I've got a Docker Swarm Stack. Three managers and two nodes, precisely. There're few services on one node (on that node only) which are working correctly, and I've got a zombie container on it, which couldn't be killed. I wanted to drain this node to prevent access to this "bad" container (which is working, just ain't responding to any command, it's a website container) and create a healthy one later. And I'm not sure if these services would be rearranged to the "healthy" node?
Presumably, docker system prune hasn't finished its work correctly, and now the system is in lock mode.
I'm using Moby Linux.
$ docker version
Client:
Version: 17.12.0-ce
API version: 1.35
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:05:03 2017
OS/Arch: linux/amd64
Server:
Engine:
Version: 17.12.0-ce
API version: 1.35 (minimum version 1.12)
Go version: go1.9.2
Git commit: c97c6d6
Built: Wed Dec 27 20:12:30 2017
OS/Arch: linux/amd64
Experimental: true
UDP1: draining a node doesn't stop any containers or rearranges the services, at least not from the start. Basically, all services on that node continue to functioning. That's was the question of interest.
UPD2: after rebooting it started to give errors about 'No such image was found...', it could be resolved by logging in to Docker hub again.
it's the principle of swarm, same Kubernetes, if a nodes goes down, as long as a master exists it should rearrange the distribution of all container to the other nodes.