The problem with adding hosts to the list in Cinder is that those previous mon hosts might be re-used in another Ceph clusters, thereby causing an authentication error when a VM tries an incorrect mon host at boot time. (This is due to the Ceph client behaviour not to try another monitor after authentication error... which I think is rather sane).
The problem with adding hosts to the list in Cinder is that those previous mon hosts might be re-used in another Ceph clusters, thereby causing an authentication error when a VM tries an incorrect mon host at boot time. (This is due to the Ceph client behaviour not to try another monitor after authentication error... which I think is rather sane).