Is it possible to upgrade PVE cluster (4 nodes) in "full on-place" mode? I mean, i migrate one host clean, upgrade from 7 to 8, migrate VMs to newly upgraded host, rinse-and-repeat?
Or should I take VMs offline and avoid migrating between PVE7 and PVE8 cluster nodes?
Or should I take VMs offline and avoid migrating between PVE7 and PVE8 cluster nodes?