Upgrade from 4.14.2 to 5


We have a setup of 6 ONE backend (in cluster) and 1 ONE frontend (all 4.14.2). All running in Ubuntu 14, with ocfs2 as storage backend.

We would like to upgrade the setup to version 5, but I’m not sure about the steps.

Should we upgrade the frontend first or last?
Can version 5 backend co-exist with version 4.14.2?
Do I need to restart the hypervisors or the vm after the upgrade?


bump? nobody upgraded a cluster from 4.14?