The forward_auth target /outpost.goauthentik.io/auth/caddy does not exist
in authentik 2026.8 (verified live: 404 for every header combination; the
URL tree has no outpost auth prefix at all — the outpost worker dials back
to core over ws/outpost/<uuid>/ instead). Unauthenticated subrequests got
404, Caddy treated >=400 as 'not authenticated' and redirected browsers to
the dead path — users saw authentik's own Not-Found page.
Fix: guarded vhosts now proxy the whole request through authentik-server:9000
with X-authentik-meta-outpost/-provider/-app headers (the exact header set
this build's Traefik controller emits, adapted for Caddy). Unauthenticated
clients get the login flow served in place; once a session exists,
authentik proxies on to the provider's internal_host — now
http://caddy:8017, a new post-auth internal listener that routes straight to
the app. The chain terminates; nothing dials back into authentik.
Live DB changes applied alongside (postgres is the source of truth):
provider pk=1 authentication_flow=default-authentication-flow (was NULL —
the actual cause of the 404s) and internal_host=http://caddy:8017 (was
self-referential http://authentik-server:9000).
Replaces the pre-Anubis direct-routing diagram with the live chain:
Caddy TLS -> Anubis :8923 verify -> accepted traffic back to Caddy's
internal listener :8016, where per-vhost routing resumes and Authentik's
embedded outpost gates wrapped apps via forward_auth. Guarded set
(homepage, search, hermes, prometheus, romm, files) and the
exempt-by-construction set (auth, plex, gitea git paths, grafana) are
listed explicitly. Access Policy bullet updated: basic auth was replaced
by the challenge-then-forward_auth layering.
Three compounding deploy-handler bugs found by live deployment:
- podman image exists/pull used a mixed-case ghcr.io ref that podman's
reference parser rejects before any network I/O (repository name must be
lowercase); all refs now lowercase — ghcr resolves case-insensitively.
- the unit runs the image under a localhost/ alias tag: this host's podman
5.7 quadlet path fails container create with 'image not known' for
registry-prefixed refs even when present in storage (verified live).
- the health probe was shell-form and the distroless ko-build image has no
shell; HealthCmd is now a JSON exec-form array, which passes through the
quadlet generator's argv assembly verbatim.
Tests updated to assert the alias-tag reality plus the pull guard.
All in-repo path references (AGENTS.md, README, old scripts, report artifacts,
test code paths) rewritten in the same commit; focused-test map extended for
.gitignore, old/scripts/*, dankclaw/comfyui/*, and report/* per this repo's
own convention ('add one before committing'). Obsidian wikilinks are
title-based and unaffected.
Frank