It sits behind the portal and handles the jobs that are annoying or risky to do by hand: approving access, syncing account state, rotating service passwords, cleaning stale Kubernetes work, checking platform health, and keeping a few service integrations lined up.
Ariadne is a FastAPI service with a small scheduler. It talks to Keycloak, Vault, Mailu, Nextcloud, Wger, Firefly, Jenkins, Metis, Kubernetes, and a few Atlas-specific services through focused adapters under `ariadne/services/`.
The API is split between admin routes, account self-service routes, internal event hooks, and Prometheus metrics. Background jobs store run history in the Ariadne database so failures can be inspected later instead of vanishing into logs.
It can start before every integration is perfect, but the matching scheduled jobs will fail or no-op until their service is actually alive. In a total bring-up, wait for storage, Flux, Postgres, Vault, Keycloak, and ingress first. Afterwards Ariadne becomes useful glue.
Most runtime behavior is configured through environment variables in `ariadne/settings.py`. Service-specific logic is in the small adapter modules; `ariadne/app.py` is focused on request flow and task orchestration.
