Problems connection to VRM MQTT Broker with MQTT Explorer

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Hi,
lately I have problems, connecting to the VRM MQTT-broker using MQTT Explorer. I am running Venus OS v3.52 on raspberry pi. In Remote Console I have the following settings:

Network Security Profile: Unsecured
Remote support: on
VRM online portal - VRM portal: Full
Use secure connection (HTTPS): on
Services - MQTT Access: on

I can login to the local MQTT broker without problems.

Today I tried to connect to the VRM MQTT broker with MQTT Explorer. I recalculated my MQTT broker address (same result as before): mqtt118.victronenergy.com
I downloaded the certificate file from GitHub - victronenergy/dbus-flashmq: Plugin for FlashMQ that interfaces between DBUS and MQTT. and imported it into MQTT Explorer.

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When pressing “Connect” there is no error message and it seems to connect, but no topics are visible, not even the SYS topics:

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If I change e.g. the broker address to mqtt119.victron… then MQTT Explorer doesn’t connect and gives a timeout. Does anyone have an idea, what the problem could be?

I saw the discussion about the self signed certificates here: Where to get CA certificate for Venus SSL self-signed certificate. Not shure, if this has anything to do with my problem.

Thanks in advance
Christian

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Did you send keepalives to the installation? Otherwise it doesn’t send anything. See:

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Yes, tried that also. But I also don’t see for example the #SYS topics from the broker itself. These should always be visible…
But thanks for the idea.

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Hi Christian,

The internet MQTT servers no longer grant very wide subscriptions, such as # , N/# or N/+/system/0/Ac/ConsumptionOnOutput/L1/Power . Instead, subscriptions have to be placed per installation, like N/<portal ID>/# , or N/<portal ID>/system/0/Ac/ConsumptionOnOutput/+/Power .

If you add N//# this to your MQTT Explorer under Advance the you will get all the infomation you need.

2 Likes
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Hi Jan,
thanks for the tip. Actually, I searched again for my problem and found some hints to the mqtt-config file on my venusOS and found the topics to link there also. That matches perfectly with your suggestions and with this information I could connect successfully to the VRM-mqtt-broker! Thanks again, very helpful
Christian

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