MQTT Engine Connect/Disconnect Loop

Ignition
1

Hi all,

We recently started facing an issue on 8.3.6 where our MQTT Engine (CirrusLink 5.0.3) was stuck in a connect/disconnect loop. Disabling and Enabling the engine only restored connection at the very beginning of the issue for a few minutes. Now it doesn't restore it at all.

We also upgraded to 8.3.8 and CirrusLink 5.0.4 to no avail. Here are the key logs:

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Any one have any ideas?

Edit: I'll add we started facing this on 7/26 and are continuing to see it at the time of writing

Edit 2: We're seeing this on 2/8 servers, and these happen to be our only two servers on 8.3

2

Check for oddball problems like server disk space.

3

All good in that department. I edited my post to add that we're seeing it on two of our servers that are our only servers on 8.3

4

I haven't seen a report like yours, so it is probably time to open a support ticket with Cirrus Link.

5

Yeah, I've sent this issue to our internal enterprise team that handles that comm. stream, wanted to see if there was anything to try in the meantime

6

Might try a packet capture to see what's going on too. It's saying it's having trouble publishing the host state so it almost seems like a permissions problem on the broker, but a packet capture may reveal more.