Two review findings, folded together.
mara: a swarm integrated auto deployed forge always has metrics, so the
toggle is gone. The endpoint follows behindGateway instead, which is the
swarm-integrated shape and the condition the protected location lives
under. Serving it without that location would put it on a listener
openFirewall can expose with nothing in front.
argus: /metrics matched no access_control rule, so default_policy
one_factor governed it. That is any authenticated subject, which today
means any operator and tomorrow any agent. My audience argument covered
the Bearer path only; the same endpoint also accepts CookieSession, and a
cookie carries no audience at all, so the audience was never what stood
between a browser session and this data.
The rule is deny rather than a client-scoped allow because the collector's
client does not exist yet. Authelia refuses a subject naming an
unregistered client, and does so in a preStart validator rather than at
build time, so naming one early yields a green nixos-rebuild and dead
swarm SSO on the next restart. Denying until the client is registered
makes publishing the endpoint safe on its own; registering it is a
one-line change from deny to that allow.
Rule order is load-bearing: authelia takes the first match.
b2ee674415