Overview
For this setup, we will be setting up our UPS master on a raspberry pi with slaves setup on a QNAP NAS and a Ubuntu Server.
Master Setup on Raspberry Pi
Connect UPS using USP cable
Installation
$ sudo apt-get install nut
Setup
Configure ups.conf
$ vi /etc/nut/ups.conf
Add the following config
[qnapups]
driver = usbhid-ups
port = auto
desc = "Back-UPS ES 750"
Configure upsd.conf
$ sudo vi /etc/nut/upsd.conf
Add the following config:
LISTEN 0.0.0.0 3493
Update Credentials
$ sudo vi /etc/nut/upsd.users
[admin] password = 123456 actions = SET instcmds = ALL [upsmon] password = 123456 upsmon master [deepthought] password = 123456 upsmon slave
Update Nut.Conf
$ sudo vi /etc/nut/nut.conf
Set Mode=netserver
MODE=netserver
Setup upsmon.conf
$ vi /etc/nut/upsmon.conf
Add the following line
MONITOR qnapups@localhost 1 upsmon 123456 master
Verify Hardware Config
$ sudo upsdrvctl start
Restart the Service
$ sudo service nut-server restart
Get Status
$ sudo service nut-server status
● nut-server.service - Network UPS Tools - power devices information server
Loaded: loaded (/lib/systemd/system/nut-server.service; enabled; vendor preset: enabled)
Active: active (running) since Tue 2021-08-24 20:28:53 EDT; 7s ago
Process: 12995 ExecStart=/sbin/upsd (code=exited, status=0/SUCCESS)
Main PID: 12996 (upsd)
Tasks: 1 (limit: 877)
CGroup: /system.slice/nut-server.service
└─12996 /lib/nut/upsd
Aug 24 20:28:53 pihole systemd[1]: Starting Network UPS Tools - power devices information server...
Aug 24 20:28:53 pihole upsd[12995]: fopen /var/run/nut/upsd.pid: No such file or directory
Aug 24 20:28:53 pihole upsd[12995]: listening on 127.0.0.1 port 3493
Aug 24 20:28:53 pihole upsd[12995]: listening on ::1 port 3493
Aug 24 20:28:53 pihole upsd[12995]: listening on 127.0.0.1 port 3493
Aug 24 20:28:53 pihole upsd[12995]: Connected to UPS [homeups]: usbhid-ups-homeups
Aug 24 20:28:53 pihole upsd[12995]: listening on ::1 port 3493
Aug 24 20:28:53 pihole upsd[12995]: Connected to UPS [homeups]: usbhid-ups-homeups
Aug 24 20:28:53 pihole systemd[1]: Started Network UPS Tools - power devices information server.
Aug 24 20:28:53 pihole upsd[12996]: Startup successful
Query the UPS
$ upsc qnapups@localhost $ upsc qnapups@192.168.1.52 battery.charge: 100 battery.charge.low: 10 ... ups.vendorid: 051d
Client Setup QNAP
From the QNAP UI, open the control panel and navigate to External Sevices → UPS
Select Remote UPS Slave and enter the IP address of the master.
Click apply. The UPS information should now be updated. See screenshots below.
From a shell connection on the QNAP server, you can verify connection via the following command: (not required)
$ upsc qnapups@192.168.1.52 battery.charge: 100 ... ups.vendorid: 051d
Client Setup (Ubuntu)
Installation
Install nut-client
$ sudo apt-get install nut-client
Configure
Update nut-config
$ vi /etc/nut/nut.conf
Set mode to netclient
MODE=netclient
Update upsmon.conf
$ vi /etc/nut/upsmon.conf
RUN_AS_USER root MONITOR qnapups@192.168.1.52 1 deepthought 123456 slave
On our master we created a slave user called deepthought.
- upsname = qnapups
- user = deepthought
- password = 123456
Restart Nut Client
Restart nut client:
$ systemctl restart nut-client
Get Status of Nut Client
Get Status:
$ systemctl status nut-client
● nut-monitor.service - Network UPS Tools - power device monitor and shutdown controller Loaded: loaded (/lib/systemd/system/nut-monitor.service; enabled; vendor preset: enabled) Active: active (running) since Wed 2021-08-25 13:11:09 EDT; 2s ago Process: 376582 ExecStart=/sbin/upsmon (code=exited, status=0/SUCCESS) Main PID: 376585 (upsmon) Tasks: 2 (limit: 19043) Memory: 1.1M CGroup: /system.slice/nut-monitor.service ├─376583 /lib/nut/upsmon └─376585 /lib/nut/upsmon Aug 25 13:11:09 deepthought systemd[1]: Starting Network UPS Tools - power device monitor and shutdown controller... Aug 25 13:11:09 deepthought upsmon[376582]: fopen /run/nut/upsmon.pid: No such file or directory Aug 25 13:11:09 deepthought upsmon[376582]: Using power down flag file /etc/killpower Aug 25 13:11:09 deepthought upsmon[376582]: UPS: qnapups@192.168.1.52 (slave) (power value 1) Aug 25 13:11:09 deepthought systemd[1]: nut-monitor.service: Can't open PID file /run/nut/upsmon.pid (yet?) after start: Operati> Aug 25 13:11:09 deepthought upsmon[376583]: Startup successful Aug 25 13:11:09 deepthought systemd[1]: nut-monitor.service: Supervising process 376585 which is not our child. We'll most likel> Aug 25 13:11:09 deepthought systemd[1]: Started Network UPS Tools - power device monitor and shutdown controller.
Check connection
Check Connection:
$ upsc qnapups@192.168.1.52
References
| Reference | URL |
|---|---|
| Raspberry Pi Home Server v2: Network UPS Tools | https://melgrubb.com/2016/12/11/rphs-v2-ups/ |