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A Proxmox Hypervisor Down - Recovery, Postmortem, and the Hardening That Followed
This afternoon the primary Proxmox hypervisor in the homelab refused to boot. Several VMs went offline. Hours of recovery later, every service was back up and no VM data had been lost. This post is the writeup of what failed, what saved the data, and the three hardening layers that have been permanently added so that the next incident in this family does not reach the "blind boot from a serial console" stage.