Problem with Mosquitto MQTT Broker Connection

[DimposPasaribu]

Mosquitto Management Center

Mosquitto MQTT Broker Version 2.0.16 

Hello, I was having a problem with the MQTT Broker giving this message every time I entered the management center.
This happened after I tried to connect an IP Camera Flexidome Starlight 8000i, I'm trying to connect the MQTT client from the camera to my ctrlX Core. I tried connecting 2 separate MQTT clients from my Camera to 2 separate MQTT brokers in my ctrlX Core. It showed an error, then after restarting this happened.

This has happened before, but it is usually fixed after I left it alone for a minute. Now, after the error stated above, the problem persists until now.

Any help is appreciated. Thanks!

[DimposPasaribu · Accepted solution]

Well uhh, this is awkward.
But, the problem has been fixed.

Mosquitto Management Center

Yesterday, I tried a couple of solutions like restarting the ctrlX Core and keeping it running from evening until this morning.
I keep the Mosquitto management center open for a couple of hours to see any changes too. But the problem persists.

Until today that is!
After reopening the management center tab again, the problem fixes itself.

Lucky me 😄

[Akseer]

Hi,

I am also facing the same issue and it has appeared few times. Every time it resolves automatically. 

I want to know the root cause to avoid having the this issue.

[Akseer]

One more query:
Does the MQTT Broker app support persistant connections with external devices when the ctrlX CORE device restarts?

So far it's observed that the external devices keep reconnecting to broker when the ctrlX CORE is under the restarting process, but as soon as the controller comes back online, the broker forces disconnection to the external clients with the error message "connection refused" on devices. 

The broker performs good in case we don't restart the ctrlX CORE device; however, sometimes it causes disconnection to devices and increases complexity to troubleshoot which devices are having issues just looking at the connected devices.