I just upgraded MItaka -> Newton -> Ocata I did not change the cinder configuration but after restart my cinder ceph volume service is down. Even with debug, the only messages get is:

DEBUG cinder.volume.drivers.rbd [req-1d7d6abf-0aa7-46f3-945c-c701aac2a529 - - - - -] connecting to ceph (timeout=-1). _connect_to_rados /usr/lib/python2.7/site-packages/cinder/volume/drivers/rbd.py:300

ERROR cinder.service [-] Manager for service cinder-volume kmgmt01.XXXX.XXt@Ceph-SAS is reporting problems, not sending heartbeat. Service will appear "down".

I have no idea what to do now.