Hey guys!
First post to the list and new Ceph user so I might say/ask some stupid stuff ;)
I've setup a Ceph Storage (and crashed it 2 days after), with 2 ceph-mon, 2 ceph-ods (same host), 2 ceph-mgr and 1 ceph-mgs. Everything is up
and running and works great.
Now I'm trying to integrate the CephFS functionality with my Docker Swarm (the rbd part is already working great). I can mount the CephFS on the
docker host without any problem with a specific client created for the effect (client.dockerfs). It also works great if creating a volume with
"docker volume create" and then use that volume on a container. With a stack (defined as docker-compose.yml), it simply doesn't mount the CephFS
share, and the ceph-mon daemons log this kind of msgs:
2019-01-30 21:44:56.595 7fed6daf9700 0 cephx server client.dockerfs: unexpected key: req.key=cb19d6f224e3099 expected_key=aa096575fa04aa68
2019-01-30 21:45:02.295 7fed6daf9700 0 cephx server client.dockerfs: unexpected key: req.key=8a87e7949a095e50 expected_key=1c3fd3ad47398e0a
2019-01-30 21:45:13.711 7fed6daf9700 0 cephx server client.dockerfs: unexpected key: req.key=93933c29c40e9b05 expected_key=5b1a8d4f4f0e8dd1
While on the docker host trying to start the container shows this:
Jan 30 23:57:57 docker02 kernel: libceph: auth method 'x' error -1
This is the mount command I use on the docker host to mount the CephFS share:
mount -t ceph ceph-mon:/znc tmp -o mds_namespace=dockerfs,name=dockerfs,secret=`ceph auth print-key client.dockerfs`
And this is the volume part of the docker-compose.yml file:
volumes:
data:
driver: n0r1skcom/docker-volume-cephfs
driver_opts:
name: dockerfs
secret: # Same output as the command above produces
path: /znc
monitors: ceph-mon
mds_namespace: dockerfs
I must be doing something wrong with this because it looks really simple to do but, somehow, it isn't working.
Can someone shed any light plz?
Thanks,
Carlos Mogas da Silva
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