MQTT (aka MQ Telemetry Transport) is a machine-to-machine or “Internet of Things” connectivity protocol on top of TCP/IP. It allows extremely lightweight publish/subscribe messaging transport.
Your first step to get MQTT and Home Assistant working is to choose a broker.
Adding MQTT to your Home Assistant instance can be done via the user interface, by using this My button:
If the above My button doesn’t work, you can also perform the following steps manually:
Some broker configuration options can’t be set via the user interface, but require changes of your
This includes configuring SSL certificate options.
- Publish & Dump services
- Birth and last will messages
- Testing your setup
event_mqtt_reloaded is fired when Manually configured MQTT entities have been reloaded and entities thus might have changed.
This event has no additional data.