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blumeops/docs/reference/services/authentik.md
Erich Blume 4f0476a851
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Fix spider trap: disable SPA mode, remove index files, relax wiki-links (#290) 
## Summary

Fixes the Facebook crawler spider trap that's been generating infinite recursive URLs like `/how-to/tutorials/tutorials/how-to/explanation/...` for several days.

**Root cause:** Quartz SPA mode + nginx `try_files` fallback to `index.html` meant any fabricated URL returned the root HTML shell with HTTP 200. Crawlers followed relative links from those fake URLs, creating infinite recursion.

**Fix:**
- Disable Quartz SPA mode (`enableSPA: false`) — all pages are now fully static HTML
- Replace nginx SPA fallback with `=404` + Quartz's static `404.html`
- Remove `robots.txt` exclusions (no longer needed)

**Docs cleanup (Obsidian.nvim compat no longer needed):**
- Delete hand-curated category index files (`tutorials.md`, `reference.md`, `how-to.md`, `explanation.md`) — Quartz auto-generates folder pages
- Delete `postgresql-storage.md` (redirect stub) and `migrate-forgejo-from-brew.md` (stale history)
- Drop `docs-check-index` and `docs-check-filenames` prek hooks
- Rewrite `docs-check-links` to allow path-based wiki-links (`[[path/to/file]]`) and only error on true ambiguity
- Add `ai-docs` doc tree listing to replace index files for AI context
- Add natural cross-links from reference cards to fix orphan docs

## Deployment and Testing

- [ ] Merge and let the build pipeline run
- [ ] Verify docs.eblu.me serves pages correctly with full page loads
- [ ] Verify non-existent URLs return 404
- [ ] Monitor crawler traffic — should drop to near zero for fabricated URLs

Reviewed-on: #290
2026-03-09 11:59:43 -07:00

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title modified tags
Authentik 2026-02-20
service
security
oidc

Authentik

OIDC identity provider for BlumeOps. Authentik is the source of truth for user identity — users are created and managed in Authentik, and services authenticate against it via OIDC.

Quick Reference

Property Value
URL https://authentik.ops.eblu.me
Admin UI https://authentik.ops.eblu.me/if/admin/
Tailscale URL https://authentik.tail8d86e.ts.net
Namespace authentik
Cluster k3s (ringtail)
Manifests argocd/manifests/authentik/
Container build containers/authentik/default.nix

Architecture

Authentik runs on ringtail's k3s cluster, isolated from the main services on indri's minikube. This means the IdP is independent of the minikube cluster lifecycle.

Three deployments:

  • server — HTTP/HTTPS interface, handles OIDC flows
  • worker — Background tasks, blueprint application
  • redis — Caching, sessions, task queue

Database

Uses the shared CNPG blumeops-pg cluster on indri, accessed cross-cluster via pg.ops.eblu.me:5432. Database authentik with managed role.

Blueprints

Authentik configuration is managed via Blueprints (YAML) stored as a ConfigMap mounted into the worker at /blueprints/custom/. Current blueprints:

  • common.yaml — shared identity resources (admins group)
  • mfa.yaml — MFA enforcement on the default authentication flow (not_configured_action: configure)
  • grafana.yaml — Grafana OAuth2 provider, application, and policy binding
  • forgejo.yaml — Forgejo OAuth2 provider, application, and policy binding

Group membership is included in the profile scope claim (Authentik built-in). Services use --group-claim-name groups to read it.

Blueprint file: argocd/manifests/authentik/configmap-blueprint.yaml

OIDC Clients

Client Status
grafana Active
forgejo Active

Future clients: argocd, miniflux, zot

Secrets

Injected via external-secrets from the "Authentik (blumeops)" 1Password item (see create-authentik-secrets for setup).

1Password Field Purpose
secret-key Authentik secret key
db-password PostgreSQL password
grafana-client-secret OIDC client secret for Grafana
forgejo-client-secret OIDC client secret for Forgejo
api-token Authentik API token

Container Image

Nix-built via dockerTools.buildLayeredImage. The entrypoint wrapper symlinks built-in blueprint directories from the Nix store into /blueprints/ at runtime, allowing custom blueprints to coexist with defaults. AUTHENTIK_BLUEPRINTS_DIR=/blueprints overrides the hardcoded Nix store path.

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