TrueNAS loses connection to UPS

[Inxsible]

I have an Eaton 5PX rackmount ups with a NM card and I am using the snmp driver to connect from TrueNAS to the UPS. When I set it up, I am able to connect to the UPS and get the diagnostic data from it. Initially I used Eaton ups 5 EX RT (SNMP) NMC Transverse card (ref 66...) -- because that was the first SNMP related driver under Eaton

After some time (not sure how much time) my console gets flooded with

Code:

Connection refused
Aug  7 09:29:39 truenas 1 2023-08-07T09:29:39.880459-05:00 truenas.lan.mydomain.com upsmon 1307 - - UPS [eaton5px@localhost:3493]: connect failed: Connection failure: Connection refused
Aug  7 09:29:44 truenas 1 2023-08-07T09:29:44.924950-05:00 truenas.lan.mydomain.com upsmon 1307 - - UPS [eaton5px@localhost:3493]: connect failed: Connection failure: Connection refused
Aug  7 09:29:49 truenas 1 2023-08-07T09:29:49.994582-05:00 truenas.lan.mydomain.com upsmon 1307 - - UPS [eaton5px@localhost:3493]: connect failed: Connection failure: Connection refused
Aug  7 09:29:55 truenas 1 2023-08-07T09:29:55.019080-05:00 truenas.lan.mydomain.com upsmon 1307 - - UPS [eaton5px@localhost:3493]: connect failed: Connection failure: Connection refused
Aug  7 09:30:00 truenas 1 2023-08-07T09:30:00.030473-05:00 truenas.lan.mydomain.com upsmon 1307 - - UPS [eaton5px@localhost:3493]: connect failed: Connection failure: Connection refused

This also causes a flood of emails to me since I have set it up to check every 5 minutes.

Then I have to go back into Services-->UPS configuration and change the snmp driver to some other snmp driver. For eg. Eaton pdu 5 ePDU Managed(snmp-ups)
Then the connection works again after saving the settings for UPS service.

A reboot of TrueNAS definitely causes this issue (I just tested it) where I have to change the driver in the UPS settings, but I am not yet able to figure out how much time it works without reboot.

Is there a fix available for this?

EDIT: I also have set up the same UPS in OpnSense (a separate box) and I have no problems of these connection failures on the OpnSense box.

 

[winnielinnie]

What are the rest of your options? The screenshot is cropped.

 

[Inxsible]

What are the rest of your options? The screenshot is cropped.

I cropped it because it had my email address listed.

In terms of options, nothing except

Code:

pollfreq = 45

in ups.conf
Here's the screenshot of the bottom half of the UPS configuration

 

[winnielinnie]

Back in May of this year, I was getting bombarded with incessant emails about my UPS losing communication; paired with flooding my logs with the same errors.

Haven't had any issues since I applied the following settings in this particular combination. (I had to play around with the best combination until I landed on something that works consistently.)

For me, it's about 99% resolved, now three months out. I will occasionally get a message about the UPS losing connection, but it fixes itself and is very rare now.

My unit is a CyberPower over USB, so this might have zero effect for you, but it's worth a shot.

Here are the four values I settled on:

* I manually stopped and started the UPS service every time I changed any values, just to rule out the possibility of the settings not being used.

 

[Inxsible]

Thanks, I appreciate it. I'll try out the same and see if it reduces the issues and keep monitoring over the next few weeks.