2 different Home Assistant MQTT topics in MQTT Broker?

Configuration Zigbee
1

Hello there,

just took a look into my mqtt setup with mqtt explorer and found this picture:

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There are two homeassistant instances:
homeassistant
homeassistant2

My MQTT Addon has the topic homeassistant subscribed.

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The Zigbee2MQTT Addon publishes under the homeassistant topic.

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I had the whole thing setup “wonky” in the past, meaning the topic “homeassistant2” was in use about 6 month ago (because for some reason I couldn’t set the “homeassistant” topic).
But now I thought everything is sorted out, as shown from the config.

Where does the homeassistant2 topic come from?

Everything is working fine with my Zigbee devices. :thinking:

How to get rid of the homeassistant2 topic? It seems to carry actual messages:

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2

If an MQTT topic is “retained”, it will be there forever unless you actually delete it (see the trashcan button in MQTT Explorer).

image

1 Like
3

I see, so deleting won’t have any negative effect on my Z2M infrastructure?

Shouldn’t the topic “homeassistant2” only have actual messages if “someone” publishes under this topic? The topic has messages from today.

4

shouldn’t, but you bet I would have a spanking new backup right before I toss that just to be sure…

1 Like
5

I was brave and deleted the old homeassistant2 topic (after doing a full backup) and everything is still working, woohoo :grin:

Still don’t understand why the old topic had messages with recent timestamps :man_shrugging: