Does proxmox have integration with ups?


Active Member
Sep 9, 2019
just bought some UPS to protect against power failure and electrical spikes.
the UPS support powerwalker, any tips or best practice how to integrate it ?

the ups should have enough capacity to maintain the servers under full load for around 10 minuts and low load for at least double

i am thinking of the following steps:
  • power down for more then 2 minute - kill heavy load services (computational grid agents) (should drop cpu load from 90-100% to 5-10% each node)
  • ups battery time left <5 minutes initiate full shutdown
I use my powerwalker UPS with the nut package. With it you can do all that.
Last edited:
If you have a compatible UPS, using apcupsd is probably the easiest way to do this. Simply do 'apt install apcupsd' and it should work almost automatically.

One item from experience: I had to comment out the 'DEVICE' item in apcupsd.conf, otherwise it wouldn't autodetect my USB attached UPS.
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I have a CyberPower sx550g ups, and I installed apcupsd in pve, and I commented out the DEVICE line of apcupsd.conf file, and after a few minutes in shell I see communication to ups lost.
When I do apcaccess status I get
root@pve:/etc/apcupsd# apcaccess status
APC      : 001,017,0418
DATE     : 2022-08-05 23:25:09 -0500 
VERSION  : 3.14.14 (31 May 2016) debian
CABLE    : USB Cable
UPSMODE  : Stand Alone
STARTTIME: 2022-08-05 23:18:11 -0500 
MBATTCHG : 5 Percent
MINTIMEL : 3 Minutes
MAXTIME  : 0 Seconds
TONBATT  : 0 Seconds
CUMONBATT: 0 Seconds
STATFLAG : 0x05000100
END APC  : 2022-08-05 23:25:09 -0500 

Anyone know how to make this communicate and work ?
Hi @Phone Guy , OP was about another model, but as @Dunuin mentioned, you probably should use NUT.Apcupsd is primarily designed for apc devices, therefore the name. from apt package info:
Description: APC UPS Power Management (daemon)
apcupsd provides UPS power management for APC products, including most BackUPS
series models (including USB), SmartUPS V/S, SmartUPS (NET/RM), and Matrix

Maybe it can communicate, but I would not bet on it, it's about shutting down your system safely. Not a bad word about apcupsd, it works very well in combination with apc devices, as many forum members have statet in other posts.
You could try your luck in the apcupsd forum, but there is already an older post for your ups model:

Nut is also very well documented

Your model is not listed in the compatibility list from nut, but that doesn't mean it won't work, in the documentation is listed how you can see if your device is communicating properly.


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