titan-iac/services/maintenance/NOTES.md

# Soteria PVC Restore Drill (backup.bstein.dev)

Use this checklist after meaningful Soteria backup, restore, auth, or alerting changes.

## Production Restore Drill Checklist

1. Verify baseline health before touching restores.
   - `flux get kustomizations -n flux-system maintenance`
   - `kubectl -n maintenance get deploy soteria oauth2-proxy-soteria`
2. Confirm operator access and source safety.
   - Operator must be in Keycloak group `admin` or `maintenance`.
   - Choose a real source PVC that is expected to be backed up, not a throwaway test PVC.
3. Run the UI flow at `https://backup.bstein.dev`.
   - Sign in via Keycloak.
   - In `PVC Inventory`, select source namespace and PVC.
   - Click `Backup now` and wait for success in `Last Action`.
   - Click `Restore` and pick a completed snapshot.
   - Set `Target namespace` and unique `Target PVC name` (`restore-<source-pvc>-<date>`).
   - Click `Create restore PVC`.
4. Validate restore output.
   - `kubectl -n <target-namespace> get pvc <target-pvc>`
   - If workload-level validation is required, attach a temporary pod and inspect expected files/data.
5. Clean up.
   - `kubectl -n <target-namespace> delete pvc <target-pvc>`
   - Remove detached restore Longhorn volume from Longhorn UI/API if one remains.

## Alert Query Verification (`maint-soteria-*`)

Start a local query endpoint:

`kubectl -n monitoring port-forward svc/victoria-metrics-k8s-stack 8428:8428`

Validate each alert expression directly.

1. `maint-soteria-refresh-stale` (`time() - soteria_inventory_refresh_timestamp_seconds`, threshold `> 900`).
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=time() - soteria_inventory_refresh_timestamp_seconds'`
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=(time() - soteria_inventory_refresh_timestamp_seconds) > bool 900'`
   - Healthy expectation: age is below `900` and threshold query returns `0`.
2. `maint-soteria-backup-unhealthy` (`sum((1 - pvc_backup_health{driver="longhorn"}) > bool 0) or on() vector(0)`, threshold `> 0`).
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=sum((1 - pvc_backup_health{driver="longhorn"}) > bool 0) or on() vector(0)'`
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=(1 - pvc_backup_health{driver="longhorn"}) > bool 0'`
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=max by (namespace,pvc) (pvc_backup_age_hours{driver="longhorn"})'`
   - Healthy expectation: unhealthy count is `0`; no series should be `1` in the per-PVC unhealthy query.
3. `maint-soteria-authz-denials` (`sum(increase(soteria_authz_denials_total[15m])) or on() vector(0)`, threshold `> 9` for 10m).
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=sum(increase(soteria_authz_denials_total[15m])) or on() vector(0)'`
   - `curl -fsS --get 'http://127.0.0.1:8428/api/v1/query' --data-urlencode 'query=sum by (reason) (increase(soteria_authz_denials_total[15m]))'`
   - Healthy expectation: total remains below `10` in normal operation; spikes should map to expected `reason` labels.

## Failure Triage

- `401/403` on UI or API:
  - Verify oauth2-proxy group claims include `admin` or `maintenance`.
- Restore conflict:
  - Target PVC already exists; choose a new target PVC name.
- `maint-soteria-refresh-stale` firing:
  - Check Soteria pod health and `/metrics` scrape reachability from `monitoring`.
- `maint-soteria-backup-unhealthy` firing:
  - Inspect `pvc_backup_health` and `pvc_backup_age_hours` to identify stale or missing backups.
- `maint-soteria-authz-denials` firing:
  - Confirm expected OIDC groups and inspect denial `reason` labels for policy or header regressions.