Wealth, Payslips, and Job-Hunter Grafana datasources all baked the
rotating PG password into their ConfigMap at TF-apply time, so every
7-day Vault static-role rotation silently broke the panels until a
manual `terragrunt apply`. Same family as the recurring grafana-mysql
backend bug — Grafana caches creds at startup and never picks up the
new ESO-synced password without a restart.
Fix:
- Each source stack now creates an ExternalSecret in `monitoring`
exposing the rotating password as `<NAME>_PG_PASSWORD` env-var.
- Grafana mounts those via `envFromSecrets` (optional=true so a
missing source stack doesn't block boot) and the datasource
ConfigMaps reference `$__env{<NAME>_PG_PASSWORD}` instead of a
literal password.
- `reloader.stakater.com/auto: "true"` on the Grafana pod restarts
it whenever any of the four DB-cred Secrets is updated.
Tested end-to-end: forced `vault write -force database/rotate-role/
pg-wealthfolio-sync` → ESO synced (~30s) → reloader fired →
Grafana booted with new env in ~50s total → all three /api/datasources
/uid/*/health endpoints return "Database Connection OK".
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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