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serverAppConfigs/serverAppConfigs-docs/Infrastructure/Grafana.md
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Frank 9d678122d7 docs: grafana OAuth2-RP contract + authentik fork quirks (live-verified 2026-08-31)
Token exchange chain verified end-to-end in-process on the live provider
(pk 9): authorize -> ORM-minted code -> form-encoded token exchange with
Basic client auth -> userinfo. Key findings documented:
- Application row + grant_types must exist before authorize can complete
- token endpoint consumes form-encoded bodies only (JSON body => no
  grant_type parsed -> unsupported_grant_type); client auth is Basic-only
- PropertyMappingEvaluator.evaluate(*args,**kwargs) forwards kwargs to
  BaseEvaluator.evaluate(expression_source), so context kwargs become the
  expression source and every evaluation raises a swallowed exception;
  userinfo therefore answers sub-only claims for every provider in this
  fork. Scope granting filter (provider= M2M descriptor) is always empty.
- Grafana identity = sub hash until the evaluator bug is fixed upstream.
2026-08-31 06:06:57 -07:00

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# Grafana
Grafana visualizes the metrics that Prometheus collects from every service. It runs on Dankclaw and is reachable at `grafana.franksdank.cloud` (via Caddy, behind the Anubis challenge + embedded-outpost gate; login happens inside Grafana via the Authentik OAuth2 button).
**Host:** Dankclaw — **Hostname:** `grafana.franksdank.cloud` — **Port:** 3002 (internal) — **Docs:** https://grafana.com/docs
## Facts
| Item | Value |
|------|-------|
| Image | `docker.io/grafana/grafana:latest` |
| Port | 3002 (host) → 3000 (container) |
| Data volume | dashboards, users, datasource config |
| Datasource | Prometheus (on the same host) |
| Provisioning | dashboards in `/etc/grafana/provisioning/dashboards` |
## Configuration
```yaml
environment:
GF_SECURITY_ADMIN_USER: "${GRAFANA_ADMIN_USER}"
GF_SECURITY_ADMIN_PASSWORD: "${GRAFANA_ADMIN_PASSWORD}"
GF_SERVER_ROOT_URL: "https://grafana.franksdank.cloud"
volumes:
- /opt/grafana/data:/var/lib/grafana
- /opt/grafana/provisioning:/etc/grafana/provisioning:ro
```
## Datasource
Point Grafana at the Prometheus service by name (`http://prometheus:9090`) on the shared podman network.
## Healthcheck
Grafana responds on `/api/health` with 200 and `"database":"ok"`.
## Gotchas
- Change the default admin credentials at first boot (env or UI).
- Dashboards provisioned as YAML survive container recreation; UI-created ones live in the data volume — back it up.
- **Auth = OAuth2 relying-party, not auth_proxy.** The embedded outpost carries
no provider token (`token=None`), so no identity header ever reaches Grafana;
RP mode is topology-independent. The full verified contract (provider pk 9,
client_id `grafana-21ca190cde75d60f`, global authorize/token/userinfo paths,
Basic client auth, form-encoded token body, and the fork's userinfo-claims
bug that leaves identity at the `sub` hash only) is in
[[Authentik]] → "OAuth2 relying-party quirks". Consequences for Grafana:
users auto-upsert as Viewer with `login = <sub hex>`; no email/groups/role
claims reach Grafana until the evaluator bug is fixed — do not write role
mappings that depend on those claims. The local admin account stays the only
Admin.
## See Also
- [[Dankclaw Stack]]
- [[Prometheus]] — the datasource
- [[Observability]] — the whole stack