Commit graph

13 commits

Author SHA1 Message Date
Viktor Barzin
4bf3f504ea fix(authentik): SMTP host = mail.viktorbarzin.me (svc name fails wildcard-cert verify)
All checks were successful
ci/woodpecker/push/default Pipeline was successful
The in-cluster svc name mailserver.mailserver.svc.cluster.local fails Authentik's strict STARTTLS hostname verification (CERTIFICATE_VERIFY_FAILED): the mailserver serves the *.viktorbarzin.me wildcard cert, which doesn't cover the svc DNS name. Use the public name mail.viktorbarzin.me, which resolves in-cluster (10.0.20.1) and matches the cert. Verified end-to-end from an authentik pod (verified TLS + SASL auth + send) before this change.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-17 07:13:53 +00:00
Viktor Barzin
c3d0c121bb feat(authentik): wire SMTP (noreply@) for TripIt signup verification + recovery email (ADR-0020)
All checks were successful
ci/woodpecker/push/default Pipeline was successful
Authentik email was unconfigured (localhost), so the TripIt enrollment flow's email-verification stage couldn't send. Add AUTHENTIK_EMAIL__* to server.env + worker.env pointing at the in-cluster mailserver as noreply@viktorbarzin.me (587/STARTTLS), with the SASL password synced from Vault secret/authentik.smtp_password via a new authentik-email ExternalSecret (reloader-annotated). Image pin unchanged (2026.2.4 == live). Prereq for the tripit-enrollment flow.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-17 07:04:52 +00:00
Viktor Barzin
4e88298976 authentik: incident hardening after the signin-speedup rollout storm
The first apply of the signin-speedup change triggered a ~50min authentik
outage (and a shared CNPG primary failover): the helm chart pin (2026.2.2)
silently DOWNGRADED the Keel-managed live image (2026.2.4) against an
already-migrated DB, default liveness probes kill-looped pods queuing on
authentik's migration advisory lock, and kills mid-migration left ghost
idle-in-transaction sessions holding that lock. Full analysis in
docs/post-mortems/2026-06-10-authentik-downgrade-boot-storm.md.

Hardening (all root causes):
- values.yaml: pin global.image.tag to the Keel-managed live tag (2026.2.4)
  so helm applies can never downgrade under Keel again
- values.yaml: server livenessProbe 6x10s/5s (was chart-default 3x10s/3s)
- values.yaml: REMOVE AUTHENTIK_POSTGRESQL__CONN_MAX_AGE (session-mode
  pgbouncer pins persistent conns 1:1 -> pool saturation, 58s/s waits)
- pgbouncer.ini: idle_transaction_timeout=300 reaps ghost lock holders;
  pgbouncer.tf gets a config-checksum annotation so ini changes roll pods
- authentik_provider.tf: drop the completed import stanza (adoption rule)
- traefik: suppress pre-existing keel.sh annotation/tier-label drift on
  auth-proxy/bot-block/x402/error-pages deployments (KEEL_LIFECYCLE_V1
  pattern) so applies stop stripping live Keel state

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-11 00:26:52 +00:00
Viktor Barzin
97ccdbecb8 authentik: speed up first-time signin (single-screen login, live env tuning, asset caching, outpost+nginx hot path)
Viktor asked to review Authentik and the web tier and make first-time
signin to apps faster. Review found the slowness is screens and round
trips, not server time. Changes:

- values.yaml: the authentik.* Helm values (gunicorn workers, cache
  timeouts, conn_max_age) were silently INERT because existingSecret
  skips chart env rendering — pods ran defaults (2 workers, 300s
  caches, no persistent DB conns). Moved all tuning into
  server.env/worker.env, which actually reaches the pods.
- authentik_provider.tf: adopt the identification stage and pin
  password_stage so username+password render on ONE screen (the
  separate order-20 password binding is deleted via API — authentik
  requires that when embedding). Outpost log_level trace->info and
  1->2 replicas (it is on the hot path of every forward-auth request;
  PG-backed sessions make 2 replicas safe).
- authentik module: /static ingress carve-out with immutable
  Cache-Control (assets are version-fingerprinted but served with no
  max-age — internal split-horizon users got zero caching).
- traefik auth-proxy nginx: upstream keepalive 32 + HTTP/1.1 (was
  opening a fresh TCP connection to the outpost per subrequest) +
  config-checksum annotation so config changes roll the pods.
- docs: authentication.md + authentik-state.md updated; fixed stale
  'postgresql.dbaas has no endpoints' claim in CLAUDE.md/CONTEXT.md
  (it is a live CNPG primary-selector compatibility service).

Done via API in the same change (UI-managed objects): 6 OIDC providers
(Vault, Forgejo, Immich, Headscale, linkwarden, Cloudflare Access)
switched from explicit to implicit consent — all first-party, the
4-weekly consent screen only slowed first-time signin.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-06-10 21:58:10 +00:00
Viktor Barzin
fd0f4a0365 fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip]
6d224861 came from a --no-checkout worktree whose empty index made the
commit drop every file except two. This restores 05b50d2b's full tree and
correctly adds stacks/stem95su/gdrive-sync.tf + the service-catalog stem95su
entry. Forward-only (parent=6d224861, no force-push); [ci skip] since the
live infra was never applied from the broken commit.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-09 08:45:33 +00:00
Viktor Barzin
6d224861c4 stem95su: scheduled Drive->site sync CronJob (every 10m)
CronJob stem95su-gdrive-sync (*/10) mounts the content PVC RW and
rclone-syncs the read-only Drive folder "claude" (stem claude/files) onto
it (rclone/rclone:1.74.3, scope=drive.readonly, empty-source guard +
--max-delete 25). ESO ExternalSecret stem95su-rclone <- Vault
secret/stem95su. Requires the GCP OAuth app published to Production or the
refresh token expires ~weekly.

Lands the gdrive-sync stack on master (it had landed on a feature branch
by accident on the shared devvm checkout).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-09 08:42:26 +00:00
Viktor Barzin
944cf51f6b authentik: worker replicas 3 -> 2
Workers handle background tasks only (LDAP sync, email, certificate
renewal) — no user-facing traffic, so 2-of-3 redundancy isn't load-
bearing. Reduces sustained CPU by ~100m.

Server replicas unchanged at 3 (PDB minAvailable=2 — user-facing).
PgBouncer pool unchanged at 3 (DB connection pooling).
2026-05-21 09:14:35 +00:00
Viktor Barzin
40a6cd067b authentik: long-lived authenticated sessions, short-lived anonymous ones
- Adopt UserLoginStage (default-authentication-login) into Terraform
  and pin session_duration=weeks=4 so users stay logged in across
  browser restarts. There is no Brand.session_duration in 2026.2.x;
  UserLoginStage is the only correct lever.
- Cap anonymous Django sessions at 2h via
  AUTHENTIK_SESSIONS__UNAUTHENTICATED_AGE on server + worker pods
  (default is days=1). Bots, healthcheckers, and partial flows now
  get reaped within 2h instead of accumulating for a day.

Implementation note: the env var is injected via server.env /
worker.env rather than authentik.sessions.unauthenticated_age,
because authentik.existingSecret.secretName is set, which makes the
chart skip rendering its own AUTHENTIK_* Secret. authentik.* values
are therefore inert in this stack -- this is documented in
.claude/reference/authentik-state.md so future edits use the right
surface.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-01 19:03:50 +00:00
Viktor Barzin
b60e34032c [authentik] Phase 1 hardening — 3 replicas, PgBouncer PDB/probes, perf env
## Context

Following the 2026-04-18 /dev/shm ENOSPC P0 and a 5-subagent research pass,
this is Phase 1 of the authentik reliability + performance hardening epic
(beads code-cwj). Scope: everything that is safe, additive, and does not
require DB restart, architectural migration, or the 43-service auth path
to go through a risky validation window.

Five research findings drove the deltas:

1. **Server/worker at 2 replicas** conflicts with the documented convention
   "critical path services scaled to 3" in .claude/CLAUDE.md (Traefik,
   Authentik, CrowdSec LAPI, PgBouncer, Cloudflared). PDB minAvailable was
   still 1 — a single-pod outage could take auth down.
2. **PgBouncer had no resource requests/limits** — silently capped at the
   Kyverno tier-defaults LimitRange (256Mi), no PDB, no probes. Pool
   failures undetected until connection timeouts.
3. **Authentik 2026.2 has no Redis** (the cache moved to Postgres in
   2025.10). Persistent Django connections + longer flow/policy cache TTLs
   are the two knobs that move the needle most without DB tuning. Both are
   safe because PgBouncer runs in session mode.
4. **Gunicorn defaults** (2 workers × 4 threads on server, 1 process × 2
   threads on worker) don't use the pod's 1.5 Gi headroom. Each worker
   preloads Django at ~500 MiB — bumping to 3 workers needs a memory bump
   to 2 Gi first.
5. **AUTHENTIK_WORKER__CONCURRENCY was renamed AUTHENTIK_WORKER__THREADS**
   in 2025.8 — the old name is aliased but the canonical config key changed.

## This change

### values.yaml
- server.replicas 2 → 3 (PDB minAvailable 1 → 2)
- worker.replicas 2 → 3
- server/worker limits.memory 1.5 Gi → 2 Gi (headroom for gunicorn workers)
- authentik.postgresql.conn_max_age = 60 (persistent connections; safe
  with pgbouncer session mode, conn_max_age < server_idle_timeout=600s)
- authentik.postgresql.conn_health_checks = true
- authentik.cache.timeout_flows = 1800 (30 min; was 300)
- authentik.cache.timeout_policies = 900 (15 min; was 300)
- authentik.web.workers = 3, threads = 4
- authentik.worker.threads = 4 (was 2)

### pgbouncer.tf
- container resources: requests cpu=50m/mem=128Mi, limits mem=512Mi
  (observed live usage is 1-3 m CPU, 2-4 MiB RSS — huge headroom,
  safely above Kyverno 256Mi tier-default cap)
- readiness probe: TCP :6432, 10s period
- liveness probe: TCP :6432, 30s period, 30s delay
- kubernetes_pod_disruption_budget_v1.pgbouncer: minAvailable=2
  (3 replicas; single drain rolls cleanly, two-node simultaneous
  outage correctly blocked)

## What is NOT in this change (deferred as Phase 2 follow-ups)

- Codify outpost /dev/shm patch in Terraform (currently applied via
  Authentik API, not in code). Needs authentik_outpost resource.
- Migrate embedded outpost → dedicated outpost Deployment with 2
  replicas + sticky sessions. Only HA path per GH issue #18098; requires
  flow design because outpost sessions are in-process memory only.
- PG max_connections 100 → 200 + shared_buffers 512MB → 768MB + CNPG
  pod memory 2Gi → 3Gi. Needs coordinated DB restart.
- Enable pg_stat_statements on CNPG cluster for Authentik DB
  observability (currently shared_preload_libraries is empty).
- PgBouncer pool_mode session → transaction + django_channels layer
  split. Needs atomic change + psycopg3 prepared-statement support.
- authentik_tasks_tasklog 7-day retention (198k rows, unbounded).
- Traefik forward-auth plugin caching via
  xabinapal/traefik-authentik-forward-plugin.
- Grafana dashboard 14837 import + recording rule for
  authentik_flow_execution_duration (reported broken: values in ns
  while default buckets are seconds — upstream discussion #7156).

## Test plan

### Automated

    $ cd stacks/authentik && ../../scripts/tg plan
    Plan: 1 to add, 3 to change, 0 to destroy.

    $ ../../scripts/tg apply --non-interactive
    module.authentik.kubernetes_pod_disruption_budget_v1.pgbouncer: Creation complete after 0s
    module.authentik.kubernetes_deployment.pgbouncer: Modifications complete after 45s
    module.authentik.helm_release.authentik: Modifications complete after 2m47s
    Apply complete! Resources: 1 added, 3 changed, 0 destroyed.

### Manual Verification

1. **Pod topology and PDBs**:

        $ kubectl -n authentik get pods,pdb
        pod/goauthentik-server-5fc69b6cc6-ctvkp   1/1   Running   0   3m14s   k8s-node2
        pod/goauthentik-server-5fc69b6cc6-fkn8x   1/1   Running   0   3m45s   k8s-node3
        pod/goauthentik-server-5fc69b6cc6-jtjjd   1/1   Running   0   5m6s    k8s-node1
        pod/goauthentik-worker-5cfb7dc9bf-b2rlr   1/1   Running   0   3m44s   k8s-node2
        pod/goauthentik-worker-5cfb7dc9bf-fkfm4   1/1   Running   0   5m6s    k8s-node1
        pod/goauthentik-worker-5cfb7dc9bf-hxdg6   1/1   Running   0   3m3s    k8s-node4
        pod/pgbouncer-64746f955f-st567            1/1   Running   0   4m58s   k8s-node4
        pod/pgbouncer-64746f955f-xss9c            1/1   Running   0   5m11s   k8s-node2
        pod/pgbouncer-64746f955f-zvfkw            1/1   Running   0   4m45s   k8s-node3
        poddisruptionbudget/goauthentik-server    2     N/A   1
        poddisruptionbudget/goauthentik-worker    N/A   1     1
        poddisruptionbudget/pgbouncer             2     N/A   1

   All three workloads spread across 3+ nodes, PDBs allow 1 disruption.

2. **Authentik server health**:

        $ curl -sS -o /dev/null -w "%{http_code}\n" \
            https://authentik.viktorbarzin.me/-/health/ready/
        200

3. **Forward-auth redirect on protected service**:

        $ curl -sS -o /dev/null -w "%{http_code}\n" -L \
            https://wealthfolio.viktorbarzin.me/
        200

4. **Outpost /dev/shm still within sizeLimit** (patches from the
   2026-04-18 post-mortem were not regressed):

        $ kubectl -n authentik exec deploy/ak-outpost-authentik-embedded-outpost \
            -c proxy -- df -h /dev/shm
        tmpfs   2.0G  58M  2.0G  3%  /dev/shm

5. **PgBouncer port reachable from other pods**:

        $ kubectl -n authentik exec deploy/pgbouncer -- nc -zv 127.0.0.1 6432
        127.0.0.1 (127.0.0.1:6432) open

## Reproduce locally

1. `cd stacks/authentik && ../../scripts/tg plan` — expect 0/0/0 (No changes).
2. `kubectl -n authentik get pdb pgbouncer` — expect MIN AVAILABLE 2.
3. `kubectl -n authentik get deploy goauthentik-server -o jsonpath='{.spec.replicas}'` — expect 3.

Closes: code-cwj
2026-04-19 11:52:41 +00:00
Viktor Barzin
bd41bb9230 fix: cluster healthcheck fixes + Authentik upgrade to 2026.2.2
- Authentik: upgrade 2025.10.3 → 2025.12.4 → 2026.2.2 with DB restore
  and stepped migration. Switch to existingSecret, PgBouncer session mode.
- Mailserver: migrate email roundtrip probe from Mailgun to Brevo API
- Redis: fix HAProxy tcp-check regex (rstring), faster health intervals
- Nextcloud: fix Redis fallback to HAProxy service, update dependency
- MeshCentral: fix TLSOffload + certUrl init container for first-run
- Monitoring: remove authentik from latency alert exclusion
- Diun: simplify to webhook notifier, remove git auto-update

[ci skip]

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-15 06:41:56 +00:00
Viktor Barzin
8a5a53a832 fix alerts and reduce Prometheus disk write rate
- linkwarden: add Reloader match annotation to DB secret so pods
  auto-restart on Vault credential rotation (was causing 100% 5xx)
- authentik: increase memory limits (server 1Gi→1.5Gi, worker 896Mi→1Gi)
  to prevent OOM kills
- prometheus: drop 113k high-cardinality series to reduce HDD write rate
  from ~8.8 to ~6.0 MB/s (31% reduction):
  - drop all traefik/apiserver/etcd histogram bucket metrics
  - drop goflow2_flow_process_nf_templates_total (9.3k series)
  - drop container_tasks_state and container_memory_failures_total
  - rewrite HighServiceLatency alert to use avg latency (_sum/_count)
  - update cluster_health dashboard to match
- raise KubeletRuntimeOperationsLatency threshold from 30s to 60s
2026-03-28 15:42:14 +02:00
Viktor Barzin
ad689076d8 scale down non-critical services to free cluster memory
- authentik server: 3→2, worker: 3→2, PDB minAvailable: 2→1
- tuya-bridge: 3→1
- realestate-crawler-api: 2→1
- claude-memory: 2→1
- grafana: 2→1 (config only, apply pending)
- alertmanager: 2→1 (config only, apply pending)

Estimated savings: ~1.2 Gi total
2026-03-22 03:10:12 +02:00
Viktor Barzin
3c804aedf8 extract dbaas, authentik, crowdsec from platform into independent stacks [ci skip]
Phase 1 of platform stack split for parallel CI applies.
All 3 modules were fully independent (no cross-module refs).
State migrated via terraform state mv. All 3 stacks applied
with zero changes (dbaas had pre-existing ResourceQuota drift).
Woodpecker pipeline updated to run extracted stacks in parallel.
2026-03-17 18:11:53 +00:00