Hi,
I tried to upgrade a 6 nodes pve7 cluster yesterday.
We use Ceph and HA for all VMs.
I was able to upgrade 4 nodes without issue.
But on the fifth node, I lost the whole cluster. All nodes rebooted !
Syslogs for nodes 22 to 27 :
update ok for nodes 22,23,24 and 27
upgrade of node 25...