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nixos/scripts/ha
beatzaplentyandClaude Sonnet 4.6 684351b89b
Check NixOS configurations / eval-hosts (push) Successful in 10m26s
fix(ha): pre-seed SSH host key in disko image; fix DRBD init race
Root cause of recurring sops failures on new VM boots: disko builds raw
disk images, and create-proxmox-resource.sh only syncs the clan-var SSH
host key to the Proxmox node (for proxmox.nix to bake into the image) when
it actually builds — reusing a cached image skips sync_remote_host_keys, so
destroy+recreate reuses a stale image with the wrong or randomly-generated
key baked in.  On first boot the VM gets a different key than what .sops.yaml
was encrypted for, and sops fails permanently.

Fix 1 — deploy.sh Phase 3: always pass --force-rebuild so every VM creation
rebuilds the disko image fresh with the current clan-var key baked in via
NIXOS_HOST_KEYS_DIR (proxmox.nix already reads this under --impure).

Fix 2 — deploy.sh Phase 5.5: after VMs boot, scan their actual ed25519 host
keys and, if they drift from clan vars, update the clan var pub-key files,
rewrite the .sops.yaml age anchors, and re-encrypt all affected sops files.
Defence-in-depth: normally a no-op after Fix 1, but catches any residual
mismatch (e.g. --skip-create-vms reuse of an older image).

Fix 3 — cluster-init.sh: add crm_standby -v on for both nodes before DRBD
metadata init.  Without this, Pacemaker's OCF DRBD agent races: it sees
drbdadm down as a failure and immediately calls drbdadm up again, leaving
/dev/sdb busy when create-md / write-dev-uuid runs (drbdmeta exits 20 with
"stdin not a TTY, not waiting for confirmation").  Standby suppresses
resource scheduling during init; crm_standby -v off restores it after DRBD
is up on both nodes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-07-28 22:51:29 +10:00
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