I heard shutting down a Ceph cluster is not just a matter of running poweroff on each node. I'm gonna have an electrician at home soon who proposed a 2 days power cut. Which means my HomeLab will be off for some time - no OPNsense FW, no DNS, no Jellyfin etc. I've found several instructions on the Proxmox forum as as well as on personal blogs on line, however, I wanted to reach out to the community to clarify the procedure and pick your brains so you speak and gain from your experiences. Anyone feedback on this topic will be much appreciated. This is what I basically found: Shutdown procedure 0. Disable HA 1. Stop the client VM and container from using your cluster 2. Issue the command ceph -s and verify that the cluster is HEALTH_OK status 3. ceph osd set noout 4. ceph osd set nobackfill 5. ceph osd set norecover 6. On each node: systemctl stop ceph.target 7. poweroff Bring the cluster back up Once the cluster has been powered up, the OSD flags that were set to protect the cluster from itself while it is being powered down and back up again must be unset in reverse order: 1. ceph osd unset norecover 2. ceph osd unset nobackfill 3. ceph osd unset noout 4. re-enable HA 5. Start up desired client VM and LXC containers Sources: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#pveceph_shutdown https://vmorecloud.com/shutdown-proxmox-cluster-with-ceph-storage/ https://smithfarm-thebrain.blogspot.com/2020/09/how-to-shut-down-ceph-cluster.html