Upgrading my Five-Node Proxmox VE homelab from 8 to 9: Failures, Recovery, and Lessons Learned
A real Proxmox VE 8-to-9 upgrade across five lab servers: systemd-boot, GRUB, duplicate repositories, Ceph conflicts, and recovery.
Read article: Upgrading my Five-Node Proxmox VE homelab from 8 to 9: Failures, Recovery, and Lessons Learned