- Add PrometheusRule: NFSHighRPCRetransmissions fires when node_nfs_rpc_retransmissions_total
rate exceeds 5/s for 5m — catches NFS server degradation before pod failures cascade
- Migrate alertmanager PV from NFS (192.168.1.127:/srv/nfs/alertmanager) to proxmox-lvm-encrypted
eliminating the circular dependency where alertmanager couldn't alert about NFS failures
- Set force_update=true on prometheus helm_release to handle StatefulSet volumeClaimTemplate changes
Co-Authored-By: postmortem-todo-resolver <noreply@anthropic.com>