The login screen would sometimes hang/blank for everyone for ~30s at a time.
Root-caused: the readiness probe (/-/health/ready/) queries the DB, and on a
transient PG/pgbouncer blip it 503s; with the chart-default ~30s tolerance all 3
goauthentik-server pods dropped out of the Service at once, so Traefik had no
healthy backend -> 502/503/504. Compounded by a silent drift: the repo set the
rollout strategy under `strategy:`, but the chart reads `deploymentStrategy:` —
so live ran the chart-default 25%/25% and dropped a pod out of rotation on every
roll. (Redis was removed upstream in authentik 2026.2, so sessions+cache are on
PostgreSQL and request-serving is coupled to PG — verified there is no
external-cache option to put back, so a SHORT transient is now survived but a
total CNPG outage still takes authentik down.)
Reliability package (R2, approved):
- readinessProbe.failureThreshold 3->8 (~80s) — absorbs a full CNPG failover
reconnect without dropping the whole fleet from the Service.
- rename server+worker `strategy:` -> `deploymentStrategy:` (the real chart key)
and set maxSurge:1/maxUnavailable:0 so a roll never dips below 3 ready.
- gunicorn AUTHENTIK_WEB__MAX_REQUESTS 1000->10000 / JITTER 50->1000 so the 9
workers' recycles don't cluster on a DB blip.
- / and /static ingresses switch to the dedicated authentik-rate-limit (100/1000)
from the previous commit (skip_default_rate_limit) — fixes the cold-load 429
blank screen.
Liveness intentionally left DB-coupled-but-shallow (LiveView always returns 200,
so it can't kill a DB-blocked pod). CONN_MAX_AGE intentionally NOT set (pins the
pgbouncer pool, reverted 2026-06-10). Docs: .claude/CLAUDE.md + authentication.md
(also corrected a stale "60s persistent DB connections" note).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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