daily-backup ran out of its 1h budget and SIGTERMed for 10 days straight (Apr
30 → May 9). Each failed run left its snapshot mount stacked on /tmp/pvc-mount,
which blocked the next run from completing — root cause of the WeeklyBackupStale
alert going silent (the metric never reached its end-of-script push).
Fixes:
- TimeoutStartSec 1h → 4h (current workload of 118 PVCs needs ~1.5h, was hitting
the wall during week 18 runs)
- Recursive umount + LUKS cleanup on EXIT trap, plus the same at script start as
belt-and-braces for any inherited stuck state from a prior crashed run
- TERM/INT trap pushes status=2 metric so WeeklyBackupFailing fires instead of
the alert going blind on systemd kills
- pfsense metric pushed in BOTH success and failure paths (was only on success;
any ssh-to-pfsense outage made PfsenseBackupStale silent until the alert
threshold expired)
Postiz backup CronJob: bundled bitnami PG/Redis live on local-path (K8s node
OS disk) — outside Layer 1+2 of the 3-2-1 pipeline. Added postiz-postgres-backup
that pg_dumps postiz + temporal + temporal_visibility daily 03:00 to
/srv/nfs/postiz-backup, getting Layer 3 offsite coverage. Verified end-to-end:
3 dumps written, Pushgateway metric received. Note: bitnamilegacy/postgresql
image is stripped (no curl/wget/python) — switched to docker.io/library/postgres
matching the dbaas/postgresql-backup pattern with apt-installed curl.
Doc reconcile (backup-dr.md): metric names had drifted (e.g. the docs claimed
backup_weekly_last_success_timestamp but the script pushes
daily_backup_last_run_timestamp). Updated to match what's actually emitted, and
added a "default-covered" footnote to the Service Protection Matrix so the
~40 services with PVCs not enumerated in the table are no longer ambiguous.
Manual PVE-host actions (out-of-band, not in TF):
- unmounted 6 stacked snapshots from /tmp/pvc-mount
- pruned 5 stale snapshots on vm-9999-pvc-67c90b6b... (origin LV that the
loop got SIGTERMed against repeatedly, so prune kept failing)
- created /srv/nfs/postiz-backup directory
- triggered a one-shot daily-backup run with the new TimeoutStartSec to
validate the fix end-to-end
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
