ebusd not publishing anything to MQTT

[Li0n87]

Hi everyone,

I started recently with using the ebusd on a Raspberry Pi and target an integration to OpenHAB 4.1.2.
Already working is reading out the external temperature by a ebus adapter v5 from an Elco heatpump, basically using an ariston configuration ariston (very similar, slightly adapted).
After an initial workaround (calling "ebusctl find" from OpenHAB rule) I want to do it the "right" way through MQTT.
Unfortunately none of my different tries were successful.
My system:
Raspberry Pi 3B
Raspian GNU/Linux 12
RabbitMQ 3.10.8, running on same Raspberry Pi; MQTT port 1883
Ebusd 23.3.23.3

My latest approach:
I added the following in /etc/default/ebusd:
EBUSD_OPTS="--configpath=/etc/ebusd/cfg -d ens:192.168.178.81:9999 --mqttport=1883 --mqttuser=mqtt_admin --mqttpass=*** --mqttint=/etc/ebusd/mqtt-hassio.cfg"
The first two options worked fine before.

Do I somehow need to "restart" ebusd to consider these changes?

As well, for me it is not clear, if I need an integration at all, if I am fine with "any" layout at the beginning. Can I just remove -mqttint at the beginning and add specific integration configuration on demand?
Currently I don't see any connections active in MQTT on the RabbitMQ Management page on port 15672, as well no messages arriving.

Any hints, what to check or what I did wrong?

Thanks!

[Li0n87]

I can confirm, rabbitmq works as expected, which I tested with mosquitto clients.
So it seems to be the issue, that ebusd is not publishing any information to rabbitmq.

[Li0n87]

I tried out some more things, including using a different user etc. But did not work.
Then I followed one other guideline, which told, after every change of /etc/default/ebusd, a restart of ebusd should be done.
It seems, that did the job. BUT:
I am really wondering, why calling the same options from command line did not have the same effect. Should not ebusd then directly apply these options and start publishing on MQTT?