comment              (sentence)  optionally add a comment to this setting
```

or environment variables

```
KEY:
notify_mqtt[:name]  publish bucket notifications to MQTT endpoints

ARGS:
MINIO_NOTIFY_MQTT_ENABLE*              (on|off)    enable notify_mqtt target, default is 'off'
MINIO_NOTIFY_MQTT_BROKER*              (uri)       MQTT server endpoint e.g. `tcp://localhost:1883`