How do i connect two HA install

[repiuk]

I would like to read sensor data from a remote HA into my HA. I guess that should be possible although I can’t find any options to connect two HA installs. MQTT or the API, but how?

[francisp (Francis)]

MQTT DiscoveryStream integration

This is an “extension” (and compatible replacement) of the builtin mqtt_statestream integration. Besides the functionalities of the here-above, it also allows to publish and handles an MQTT “disvovery” setup. This is specifically useful in “Master-Slave” HA scenarios. A “slave”, by instance a specific HA instance handling zigbee and / or Bluetooth, would use this component to publish states and discovery via MQTT. A “master” would use the built-in MQTT discovery mechanism to subscribe to sta…

[repiuk]

Thanks. All status en attribute info from the sensor is now visible with MQTT explorer. The MQTT integration on the main HA doesn’t auto discover the sensors. Must be a configuration error.

[francisp (Francis)]

Discovery enabled ?

[repiuk]

apparently autodiscovery only works on the default homeassistant prefix. Easily solved with

mqtt:
  discovery: true
  discovery_prefix: homeassistant_2