Network UPS Tools for Rock Linux - A Guide

Diffrences between a debian install and a rhel install

• yum vs dnf
• diffrent install location /etc/nut/ vs /etc/ups/
• firewall ports
• the lack of a2enmod

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Install Dependencies

sudo dnf update -y
sudo dnf config-manager --set-enabled crb
sudo dnf install epel-release vim usbutils -y

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Install NUT and check scanner

sudo dnf install nut -y
sudo nut-scanner -U

[nutdev1]
        driver = "usbhid-ups"
        port = "auto"
        vendorid = "09AE"
        productid = "2009"
        product = "TRIPP LITE UPS"
        serial = "FW-2473 A"
        vendor = "Tripp Lite"
        bus = "002"

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Configure NUT

sudo vim /etc/ups/ups.conf

pollinterval = 1
maxretry = 3
[tripplite]
        driver = usbhid-ups
        port = auto
        desc = "Tripp Litt 1500VA SmartUPS"
        vendorid = 09ae
        productid = 2009

sudo vim /etc/ups/upsmon.conf

MONITOR tripplite@localhost 1 admin secret master

sudo vim /etc/ups/upsd.conf

LISTEN 0.0.0.0 3493 

sudo vim /etc/ups/nut.conf

MODE=netserver

sudo vim /etc/ups/upsd.users

[monuser]
  password = secret
  admin master

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Reboot or restart

sudo shutdown -r now

or

sudo systemctl start nut-driver
sudo systemctl start nut-monitor
sudo systemctl start nut-server
sudo upsdrvctl stop
sudo upsdrvctl start

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Test NUT

upsc tripplite@localhost

battery.charge: 100
battery.runtime: 1485
battery.type: PbAc
battery.voltage: 26.9
battery.voltage.nominal: 24.0
device.mfr: Tripp Lite
device.model: TRIPP LITE UPS
device.serial: FW-2473 A
device.type: ups
driver.name: usbhid-ups
driver.parameter.pollfreq: 30
driver.parameter.pollinterval: 1
driver.parameter.port: auto
driver.parameter.productid: 2009
driver.parameter.synchronous: no
driver.parameter.vendorid: 09ae
driver.version: 2.7.4
driver.version.data: TrippLite HID 0.82
driver.version.internal: 0.41
input.frequency: 59.7
input.voltage: 119.0
input.voltage.nominal: 120
output.frequency.nominal: 60
output.voltage.nominal: 120
ups.beeper.status: enabled
ups.delay.shutdown: 20
ups.mfr: Tripp Lite
ups.model: TRIPP LITE UPS
ups.power.nominal: 1500
ups.productid: 2009
ups.serial: FW-2473 A
ups.status: OL
ups.timer.reboot: 65535
ups.timer.shutdown: 65535
ups.vendorid: 09ae
ups.watchdog.status: 0

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Install CGI Web Application

sudo dnf install httpd nut-cgi -y
sudo vim /etc/ups/hosts.conf

MONITOR tripplite@localhost "Tripp Lite 1500VA SmartUPS - Rack"

sudo systemctl restart httpd
sudo vim /etc/ups/upsset.conf

I_HAVE_SECURED_MY_CGI_DIRECTORY

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Move files from nut-cgi-bin to cgi-bin

rmdir cgi-bin/
mv nut-cgi-bin/ cgi-bin

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Update Firewall

sudo firewall-cmd --zone=public --permanent --add-service=http
sudo firewall-cmd --zone=public --permanent --add-service=https
sudo firewall-cmd --reload

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Visit

http://your.ip.adddress/cgi-bin/upsstats.cgi

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Sources:

https://docs.technotim.live/posts/NUT-server-guide/
https://www.youtube.com/watch?v=vyBP7wpN72c