Third instance of one class (hub v0.12.0, v0.73.0, this), fixed as a class.
On 2026-07-26 03:00 UTC expected_backup_missed fired on demo-felhom, demo-hp
and drill-r50 at once; the demo-felhom one reached the CUSTOMER channel
claiming "newest backup is 176h0m0s old". Nothing was wrong — three vzdump
archives were on disk. Cause: the agent backup store is in-memory, so the
R-50 fleet restart emptied `backups` until the next run, and the hub read
empty as "no backup exists".
- assessBackupFreshness returns OK/UNKNOWN/MISSED instead of `missed bool`;
absence is UNKNOWN until it outlives an anchored window. Still pure.
- store.GetHostReportsSince + monitor.newestBackupEvidence read the hubs own
retained history (bounded 7-day lookback, early-exit on fresh evidence) —
"when did I last SEE evidence of a backup?" The anchor was free: the hub
already retains 90 days. No agent change, no new persisted state.
- store.GetFirstHostReportAt anchors absence at first contact, reusing the
existing 26h threshold as the grace (no new knob, the v0.73.0 shape).
- Deferrals logged + counted; reason strings kept distinct.
- backupStaleAfter untouched; landmine recorded (a weekly PBS snapshot would
alarm six days in seven) and owned by R-82.
Tests 493->508. Red-proofs A/B/C observed and restored; A reproduces the live
message verbatim. Replayed the real 03:00 reports (600/417/77 rows): all
three now silent.
Source: documentation/audits/DIAG-backup-missed-2026-07-26.md
Phase-1 of SPIKE-infra-backup-2026-06-15. The infra-backup mechanism was dead
since slice 8C yet stored plaintext customer secrets at rest (app-secret key,
restic password, Cloudflare tokens) — a zero-knowledge violation — and its
absence made the daily expected_backup_missed email fire for healthy customers.
- Repoint monitor.CheckBackupDeadlines backup half to the agent host-report's
PBS snapshots (+vzdump): alarm only on no-backup / >26h stale / verify failed.
Keep the db_dump half. No host-report → no backup alarm (liveness owns that).
New store.GetLatestHostReportJSON. Tests incl. a companion that fails pre-fix.
- Remove the infra-backup endpoints, store methods/types, and operator panel;
/recovery now returns config_yaml only.
- migrate(): DROP infra_backup_versions/infra_backups + VACUUM (+wal_checkpoint)
to physically reclaim the plaintext pages, gated on table existence.
Flagged out-of-scope: exposed creds need operator rotation; legacy reports table
holds historical plaintext restic_password rows (separate leak, not purged here).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude Code
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