Ceph Version Upgrade

This article addresses version upgrade of a Ceph cluster. We will show step-by-step instructions.

Before upgrades, make sure that Ceph clusters are in HEALTH_OK state.

sudo ceph health

The other requirement is that the number of mgr daemons should be more than 1. We also worked a cluster with three monitor nodes. I believe we need multiple monitor nodes for upgrade, but it is not verified.

Then, check the current version. The first command gives a brief version and the second command gives versions of each Ceph daemon…