$:juju ssh ceph-mon/12

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ubuntu@juju-2e5396-17-lxd-0:~$ sudo ceph -s
2017-05-17 08:07:12.932322 7fcea3a22700 -1 auth: unable to find a keyring on /etc/ceph/ceph.client.admin.keyring: (2) No such file or directory
2017-05-17 08:07:12.932343 7fcea3a22700 -1 monclient(hunting): ERROR: missing keyring, cannot use cephx for authentication
2017-05-17 08:07:12.932360 7fcea3a22700  0 librados: client.admin initialization error (2) No such file or directory
Error connecting to cluster: ObjectNotFound