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ozdw avatar image
ozdw asked

CCGX MQTT issue - no activity

A couple of days ago, my nodered flows (on a linux box) subscribed to mqtt.victronenergy.com stopped working. Attempting to diagnose the issue, I used

mosquitto_sub -v -I myclient -t '#' -h ccgx

against the CCGX locally and receive no updates and the only value returned is for the topic "N/my_identifier/system/0/Serial". Previously, this would've returned a large volume of data.

I eventually found how to set a root password, then logged into the CCGX as root and looked at the mosquitto log files and find nothing unusual. Looking at the dbus-mqtt log, I don't see anything suspicious.

I've rebooted the CCGX and the issue persists. It's running the latest firmware.

I would appreciate any guidance on this puzzling issue.

MQTT
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ozdw avatar image ozdw commented ·

I should add that everything in the system is working normally and a modbusTCP client app shows expected data updates are happening on modbus. It's just MQTT that's apparently not being updated.

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ozdw avatar image
ozdw answered ·

Interesting. After three or four days and nothing changing here, it's working again. I wish I knew what happened.

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tabbertmj answered ·

I'm currently seeing the same thing. It was working for me a week or two ago, now I only get the serial number. A reboot does not seem to fix it.

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tabbertmj answered ·

I updated to RC v2.62~10 and still do not have data.

OK, once I published to the below about 7-8 times it finally returned data. The first few times it only returned the serial number. There seems to be a flaw.

R/{siteID}/system/0/Serial
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mvader (Victron Energy) answered ·

Hi,


Try

1) the mfd app: open http://venus.local/app/ in a browser, if that works, mqtt works. If it only loads the page, but then no data or even an error message abour MQTT, then there is an issue with the MQTT settings.


2) similarly, go to VRM, go to the dashboard od your site, if it says Realtime, then MQTT works.


We’d be getting tons of questions if MQTT stopped working, as both above much used features rely on it.

Most likely there is some issue in your handling of sending the keep alives.


hope that helps!

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mvader (Victron Energy) avatar image mvader (Victron Energy) ♦♦ commented ·

Ps. Make sure to also read this: https://github.com/victronenergy/dbus-mqtt#determining-the-broker-url-for-a-given-installation


most likely that will solve the issue

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tabbertmj avatar image tabbertmj commented ·

mfd.pngHI Matthijs, Today, the MFD page is not loading. It did load yesterday with V2.60. It does, however start populating data in MQTT. This may explain why I was seeing data last week, but not this week. I probably had the page loaded on one of my tabs.

The VRM portal does say Realtime, but does not populate the MQTT data like the MFP page.

Last night, in order to get the data to populate, I had to publish to "R/{siteID}/system/0/Serial " more than once in order to get data to start populating. I would expect that I only need to publish once every 50-60 seconds to keep it alive.

Thanks,
Mike

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