Central MQTT broker — native Debian mosquitto (no Docker), the lightest guest in the lab (23MB RAM).
| Guest | LXC 116 "MQTT" on SuperPC |
| IP | 192.168.86.2 |
| Tailscale | — |
| Resources | 1 vCPU / 512 MB |
| Rootfs | 8G ceph-storage |
| Port | Purpose |
|---|---|
| 1883 | MQTT (auth required) |
/etc/mosquitto/conf.d/auth.conf: allow_anonymous false, password_file /etc/mosquitto/passwd, listener 1883/var/lib/mosquitto/frigate (from Frigate's config). Home Assistant presumably also connects — verify its account.Tiny and precious: /etc/mosquitto/ + /var/lib/mosquitto/. Not in vzdump job — add 116 (8G rootfs, costs nothing).
Native package: apt update && apt upgrade mosquitto inside the LXC.
mosquitto_sub -h 192.168.86.2 -u frigate -P '<pw>' -t 'frigate/#' -v # watch Frigate events
mosquitto_passwd /etc/mosquitto/passwd <newuser> # add user (then reload)
Kuma: MQTT - Port (TCP 1883).