Two related fixes for the issues the AI Monitor surfaced on whp01 on
2026-05-12 (haproxy-manager going "healthy but stalled" after long
uptime, and noise from POST /blocked-ip returning 405):
1. Production WSGI server. The Flask app was running on werkzeug's
built-in dev server (the one that prints "WARNING: This is a
development server" on every startup). werkzeug is single-threaded
and accumulates worker state over long uptimes; after ~24h on whp01
the health endpoint stops responding while the container still
reports "healthy" because Docker's HEALTHCHECK uses an HTTP probe
from inside the same werkzeug process that's stalled.
Replace with gunicorn (gthread worker class, --max-requests=1000
with jitter so workers recycle periodically). Two gunicorn instances,
one per Flask app — port 8000 for the management API, port 8080 for
the default/blocked-ip page server. Both lift their app objects from
the haproxy_manager module so gunicorn can import them.
Required structural change: default_app was created INSIDE the
__name__ == '__main__' block at module bottom, where gunicorn could
never reach it. Moved to module level. The __main__ block now stays
only for `python haproxy_manager.py` local-dev workflow.
Container init (init_db, certbot register, generate_config,
start_haproxy) extracted into a do_initial_setup() function called
from a new scripts/init.py. start-up.sh runs init.py to completion
before either gunicorn binds, which keeps HAProxy startup off the
WSGI workers' fork paths (no race between workers all trying to
start_haproxy() at once).
2. /blocked-ip and / accept ALL methods. HAProxy proxies blocked-IP
traffic to default_app preserving the original verb, so a blocked
POST request used to hit Flask's GET-only route and get a 405 +
the AI Monitor flagged the noise. Adding the full method list lets
the 403 page render regardless of verb.
Gunicorn settings tunable via env (workers, timeout, max-requests).
API gets --timeout 120 because ACME cert issuance can be slow; the
default page server stays on the gunicorn default 30s.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
