One word of caution: there is one known upgrade issue if you - upgrade from luminous to nautilus, and then - run nautilus for a very short period of time (hours), and then - upgrade from nautilus to octopus that prevents OSDs from starting. We have a fix that will be in 15.2.1, but until that is out, I would recommend against the double-upgrade. If you have been running nautilus for a while (days) you should be fine. sage https://tracker.ceph.com/issues/44770
