Round-2 changes locking in scaffold-phase decisions and adding ML/notebook stacks.
Locked decisions
- sql: postgres 16-alpine (was TBD); init.d/ mount for per-app DB provisioning
- nginx-proxy: stock nginx + certbot sidecar (was nginx:alpine TODO).
Chose stock over nginxproxy/nginx-proxy because stream{} is required for
MQTT-TLS reverse-proxy on tcp/8883 to rabbitmq:1883.
- gitea: HTTPS-only (DISABLE_SSH=true). No SSH port published.
MQTT split
- Remove stacks/mqtt placeholder.
- Add stacks/rabbitmq — general-purpose broker (AMQP + MQTT plugin),
used at both cloud and edge. External MQTT clients reach cloud broker
via nginx stream-proxy on 8883.
- Add stacks/mosquitto — reserved for the FROST (SensorThings) stack
only. Cloud-only. Internal to its own stack; no external ingress.
ML / notebooks (cloud-only)
- stacks/mlflow — experiment tracking + model registry. Postgres backend
on sql stack; local volume for artifacts (S3/MinIO is a TODO).
- stacks/jupyterhub — multi-user notebook server. DockerSpawner via
mounted docker.sock; users spawn into cloud-app network so they can
reach mlflow, influxdb (via grafana), rabbitmq.
Sites
- sites/gemaal1 — first edge deployment scaffold. Site-local override
template for binding nginx to PLANT_LAN_IP.
Docs
- README + docs/architecture.md updated: stacks table now lists 15 stacks,
ingress + attachment tables reflect mlflow/jupyterhub, TLS strategy
section locked, MQTT-split section added, Gitea HTTPS-only noted.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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mosquitto
Eclipse Mosquitto MQTT broker. Reserved for the FROST (SensorThings API) stack — separate from the general-purpose rabbitmq broker. Cloud-only.
- Network:
app(internal only — FROST services connect via service namemosquitto) - No external ingress by default. If FROST needs external MQTT publishers, route them through a separate nginx stream block on a different port (not 8883 — that belongs to rabbitmq).
- Config:
config/mosquitto.conf— listener config, ACLs, persistence - TODO:
- ACL aligned with FROST topic structure
- Persistence retention policy
- Optional shovel from
rabbitmqif cross-broker forwarding is needed