Setting up a NUT Server

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Install NUT

  • sudo apt install nut

Select your mode

  • sudo vi /etc/nut/nut.conf

(In my case, I've installed NUT on a VM and it'll be managing the UPS for the whole server...)

MODE=netserver

Select your hardware

  • sudo vi /etc/nut/ups.conf
[cyberpower]
       driver = usbhid-ups
       port = auto
       desc = "A random surplus UPS"

(In my case, I'm setting up a CyberPower 1000AVR & connecting it by passing USB through to the VM...)

If your UPS isn't handled natively by the usbhid-ups driver, or you need to set options, start with the ups.conf documentation for more details.

Start & test

  • sudo upsdrvctl start

You should see:

Network UPS Tools - UPS driver controller 2.7.4
Network UPS Tools - Generic HID driver 0.41 (2.7.4)
USB communication driver 0.33

Possibly followed by a bit of information about your UPS

Set up communications

(needed if you've set up as MODE = netserver...)

You can determine your servers IP address using:

  • ip a
  • sudo vi /etc/nut/upsd.conf
LISTEN 192.168.0.7
LISTEN 127.0.0.1 3493
LISTEN ::1 3493

Where 192.168.0.7 should be replaced with the actual IP of the machine.

See the upsd.conf documentation for more details.

Set up access

  • sudo vi /etc/nut/upsd.users
[upsmon]
    password = supersecretpassword
    upsmon primary

(used to be "upsmon master", but the PC police got to it.)

See the upsd.users documentation for more details.

  • sudo vi /etc/nut/upsmon.conf
MONITOR cyberpower@ups.server.tld 1 monuser supersecretpassword master

(where ups.server.tld is the name or IP of your NUT server.)

See the upsmon.conf documentation for more details.