Mosquitto MQTT broker

Set up Mosquitto as MQTT broker.

{
  "plain": true,
  "ssl": false,
  "anonymous": true,
  "logins": [
    {"username": "testuser", "password": "mypw"}
  ],
  "customize": {
    "active": false,
    "folder": "mosquitto"
  },
  "certfile": "fullchain.pem",
  "keyfile": "privkey.pem"
}

Make sure you use logins and disable anonymous access if you want to secure the system.

Configuration variables:

• plain (Optional): Listen on port 1883 without SSL/TLS. Defaults to true.
• ssl (Optional): Listen on port 8883 with SSL/TLS. This requires certificates. Defaults to false.
• anonymous (Optional): Allow anonymous connections. If logins is set, the anonymous user can only read data. Defaults to true.
• logins (Optional): A list of users that will be created with username and password.
• customize (Optional): If you enable it, it reads additional configuration files (*.conf) from /share/mosquitto.

Home Assistant configuration

To use the Mosquitto as broker add the following entry to the configuration.yaml file.

# Example configuration.yaml entry
mqtt:
  broker: core-mosquitto

If username and password are set up in add-on, your configuration.yaml file should contain that data.

mqtt:
  broker: core-mosquitto
  username: YOUR_USERNAME
  password: YOUR_PASSWORD