Wallbox (openWB) Get rid of MQTT values/entities?

Third party integrations
1

Hi,

I am using MQTT to integrate my Wallbox (openWB). There has been a major change in the Wallbox software (v1 to v2 changed all MQTT topics) and I wanted to start over with a fresh install on my system and try the alpha MQTT integration for software 2.x

Well, first I installed a new SD card with the new system on my Wallbox (new imagefile, no leftovers in any way from previous installations. At least I thought.

Then I realized that the old integration in HA was still active, so I removed it and edited my mosquitto.conf not to look for these values anymore.

After that, I used MQTT explorer to check, but there were still all topics present. So I deleted al MQTT topics from the wallbox in HA and rebooted. They did not come back and I thought I was finished - wrong…

as soon as I configured my 2.x software on the wallbox, I wanted to reimplement the MQTT readings, so I readded this to my mosquitto.conf

connection openwb
address 192.168.0.181:1883 # IP der openWB
start_type automatic
topic openWB/# both 2
local_clientid openwb.mosquitto
try_private false
cleansession true

After a restart of Mosquitto, it started publishing all the leftover 1.x values immediately again, and what is worst - it messes up my configuration of the Wallbox as it writes values to its configuration via MQTT.

I need help to get rid of these leftover values permanently…

2

Your broker has undelivered retained messages. Here’s how you can deal with it.

  • Send a null message to the topics that you want to remove the retained messages from.
  • Delete the persistence file. If your broker is on a Linux computer, deleting the persistence file can be easily done with just a few commands:
sudo service mosquitto stop
sudo rm /var/lib/mosquitto/mosquitto.db
sudo service mosquitto start

after that, all of the retained messages should be removed and mosquitto will begin to build a new persistence file for the current retained MQTT messages.

1 Like
3

Your help is very appreciated. What I did was to delete all topics with the “retained” marker checked in MQTT explorer. That hasnt done the trick, obviously.

4

Strange; that should have worked.

  1. Delete the topics with retained messages in MQTT Explorer.

  2. Restart MQTT Explorer.

  • If the deleted topics aren’t visible, then they’re truly gone. The topics will only come back if some client publishes another retained message to them.
  • On the other hand, if after restarting MQTT Explorer the deleted topics immediately re-appear then it didn’t work correctly.
5

Got it. The problem was, that the openWB well accepts some MQTT configuration messages from HA (and then replays them), but they cannot be deleted from there.
So everytime I switched the Wallbox back on, I ended up with the entities coming back to HA.
So: Wallbox off, get rid of all values in HA/Mosquitto, restart Wallbox with a fresh installation from SD card. Done.