More MQTT VirtualHost Proxying

A really quick follow up to the earlier post about using TLS SNI to host multiple MQTT brokers on a single IP address.

In the previous post I used nginx to do the routing, but I have also worked out that the required input to Traefik would be.

The static config file looks like this

global:
  checkNewVersion: false
  sendAnonymousUsage: false
entryPoints:
  mqtts:
    address: ":1883"
api:
  dashboard: true
  insecure: true
providers:
  file:
    filename: config.yml
    directory: /config
    watch: true

And the dynamic config like this

tcp:
  services:
    test1:
      loadBalancer:
        servers:
          - address: "192.168.1.1:1883"
    test2:
      loadBalancer:
        servers:
          - address: "192.168.1.2:1883"
  routers:
    test1:
      entryPoints:
        - "mqtts"
      rule: "HostSNI(`test1.example.com`)"
      service: test1
      tls: {}
    test2:
      entryPoints:
        - "mqtts"
      rule: "HostSNI(`test2.example.com`)"
      service: test2
      tls: {}

tls:
  certificates:
    - certFile: /certs/test1-chain.crt
      keyFile: /certs/test1.key
    - certFile: /certs/test2-chain.crt
      keyFile: /certs/test2.key

Of course all the dymaic stuff can be generated via any of the Traefik providers.