Ahead of upgrading my Proxmox homelab node from 7.4 to 8.0, I migrate its guest VMs (Jellyfin and a Docker host) to another cluster node, which doubles as a test of the disaster-recovery plan, fixing a couple of hardware incompatibilities along the way. The node then gets a fresh Proxmox 8 install rather than the in-place upgrade, which I document as a runbook covering non-subscription repositories, SSL certificates, Tailscale, and NFS storage...
