REST sensor to 2nd HA instance / attributes not effective

[koying (Chris B)]

I created (and still use) an integration to do “master/slave” HA through MQTT:

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…

It handles all this automagically