Comment 22 for bug 1656116

Definitely something todo with wonky leadership election:

ceph-mon-0/var/log/juju/unit-ceph-mon-0.log:2017-01-11 17:15:44 INFO juju-log still waiting for leader to setup keys
ceph-mon-0/var/log/juju/unit-ceph-mon-0.log:2017-01-11 17:20:02 INFO juju-log mon:14: still waiting for leader to setup keys
ceph-mon-0/var/log/juju/unit-ceph-mon-0.log:2017-01-11 17:20:19 INFO juju-log mon:14: still waiting for leader to setup keys

ceph-mon-1/var/log/juju/unit-ceph-mon-1.log:2017-01-11 17:19:30 INFO juju-log still waiting for leader to setup keys
ceph-mon-1/var/log/juju/unit-ceph-mon-1.log:2017-01-11 17:19:47 INFO juju-log mon:14: still waiting for leader to setup keys
ceph-mon-1/var/log/juju/unit-ceph-mon-1.log:2017-01-11 17:20:01 INFO juju-log mon:14: still waiting for leader to setup keys
ceph-mon-1/var/log/juju/unit-ceph-mon-1.log:2017-01-11 17:20:10 INFO juju-log mon:14: still waiting for leader to setup keys

ceph-mon-2/var/log/juju/unit-ceph-mon-2.log:2017-01-11 17:19:28 INFO juju-log still waiting for leader to setup keys
ceph-mon-2/var/log/juju/unit-ceph-mon-2.log:2017-01-11 17:19:42 INFO juju-log mon:14: still waiting for leader to setup keys
ceph-mon-2/var/log/juju/unit-ceph-mon-2.log:2017-01-11 17:19:54 INFO juju-log mon:14: still waiting for leader to setup keys
ceph-mon-2/var/log/juju/unit-ceph-mon-2.log:2017-01-11 17:20:07 INFO juju-log mon:14: still waiting for leader to setup keys

all three units where waiting for a leader to appear and bootstrap the data for the cluster.

I believe the call at 2017-01-11 17:15:44 by ceph-mon/0 should have resulted in it being declared the lead unit.