Comment 0 for bug 1521395

This error occurred occasional in gate. It failed on using docker CLI to create/delete container. Here is an example:

http://logs.openstack.org/84/251184/2/check/gate-functional-dsvm-magnum-swarm/7b19343/

From the logs, the stack created successfully. All the services in bay nodes started successfully as well. But the docker CLI cannot connect to the swarm manager. Below is a sample error in swarm-manager:

-- Logs begin at Mon 2015-11-30 22:27:40 UTC, end at Mon 2015-11-30 22:59:25 UTC. --
Nov 30 22:36:44 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal systemd[1]: Starting Swarm Manager...
Nov 30 22:36:47 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[960]: Error response from daemon: Cannot kill container swarm-manager: no such id: swarm-manager
Nov 30 22:36:47 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[960]: Error: failed to kill containers: [swarm-manager]
Nov 30 22:36:52 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[970]: Error response from daemon: no such id: swarm-manager
Nov 30 22:36:52 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[970]: Error: failed to remove containers: [swarm-manager]
Nov 30 22:37:57 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[987]: Trying to pull repository docker.io/library/swarm ...
Nov 30 22:38:02 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal curl[1120]: <resource>master_wait_handle</resource>
Nov 30 22:38:02 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal systemd[1]: Started Swarm Manager.
Nov 30 22:38:57 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[1119]: time="2015-11-30T22:38:57Z" level=info msg="Listening for HTTP" addr="0.0.0.0:2375" proto=tcp
Nov 30 22:39:04 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[1119]: time="2015-11-30T22:39:04Z" level=info msg="Registered Engine te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal at 192.168.0.5:2375"
Nov 30 22:51:02 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[1119]: 2015/11/30 22:51:01 http: TLS handshake error from 192.168.0.3:46565: remote error: unknown certificate authority
Nov 30 22:51:10 te-zakmvaj2s-0-wddmnsggouut-swarm-master-6b3z2u65lix7.novalocal docker[1119]: time="2015-11-30T22:51:10Z" level=info msg="Registered Engine te-jvfyy3mcidh-0-rff2zqecx7w3-swarm-node-oajimnyjmum4.novalocal at 192.168.0.6:2375"