infra/stacks/traefik
Viktor Barzin b84b0021c2
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authentik: dedicated rate-limit carve-out + per-router 5xx observability
Unauthenticated users were getting a blank login screen (and the screen would
sometimes just hang). Root-caused via a read-only fan-out + adversarial verify:
the login SPA cold-loads ~70 flow-executor JS/CSS chunks from /static through
the SHARED 10/50 Traefik limiter, so a fresh/empty-cache load 429s the tail and
a failed ES-module import aborts SPA bootstrap -> permanent blank. authentik was
the only first-party SPA still on the default limiter (8 siblings already have a
carve-out). NAT-shared clients trip it especially easily (shared per-IP bucket).

- traefik: new `authentik-rate-limit` Middleware (average 100 / burst 1000,
  mirroring the existing health/tripit carve-outs). The authentik / and /static
  ingresses switch to it in the authentik-stack commit.
- monitoring: the `traefik` scrape job's drop-regex was a blanket
  `traefik_router_.*`, which also dropped `traefik_router_requests_total` — so
  per-router 4xx/5xx (incl. 429/503) was neither queryable nor alertable.
  Narrowed it to keep the counter while still dropping the high-cardinality
  `*_duration_seconds_bucket` histogram, and added `AuthentikRootRouter5xxHigh`
  for the episodic all-3-server-pods-NotReady 502/503/504 cascade.

Docs updated (networking.md rate-limit list, .claude/CLAUDE.md). GitOps CI applies.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-28 09:10:34 +00:00
..
modules/traefik authentik: dedicated rate-limit carve-out + per-router 5xx observability 2026-06-28 09:10:34 +00:00
main.tf traefik/crowdsec: delete dead Yaegi plugin + middleware CRD + captcha (PR2/2) 2026-06-21 13:35:13 +00:00
secrets fix: restore tree dropped by 6d224861; land stem95su gdrive-sync (10m) [ci skip] 2026-06-09 08:45:33 +00:00
terragrunt.hcl traefik: non-merge apply trigger (error-pages buffer fix) 2026-06-12 20:31:24 +00:00