homelab.

This is an automated archive made by the Lemmit Bot.

The original was posted on /r/homelab by /u/More-Goose7230 on 2025-08-06 12:10:00+00:00.

Hey all,

I recently upgraded my 3-node Proxmox cluster from 8.4 to 9.

The whole upgrade took me about 3 hours start to finish for the full cluster. I made sure to power down all virtual machines ahead of time and took backups, just in case.

I highly recommend starting with the official documentation:

https://pve.proxmox.com/wiki/Upgrade_from_8_to_9

I came across a few good condensed guides for Proxmox, but couldn’t find anything similar for Ceph upgrades, especially when dealing with clusters.

So I wrote up my own simplified walkthroughs with everything that helped me:

Proxmox 8 ➜ 9 upgrade: [https://mylemans.online/posts/Proxmox-Upgrade-8-to-9/](https://mylemans.online/posts/Proxmox-Upgrade-8-to-9/%5D())

Ceph Reef ➜ Squid upgrade (if applicable): [https://mylemans.online/posts/Ceph-Upgrade-Reef-to-Squid/](https://mylemans.online/posts/Ceph-Upgrade-Reef-to-Squid/%5D())

Hopefully it saves someone else a few tabs and some time.