How to monitor Mustek PowerMust 2012 UPS with Ubuntu Server 14

In the next tutorial I will show you how to monitor a Mustek PowerMust 2012 UPS with Ubuntu Server 14.

The UPS is connected to the server using a USB cable.

Ubuntu server details :

[email protected]:/# cat /etc/lsb-release

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.1 LTS"

[email protected]:/# uname -a

Linux erp 3.13.0-44-generic #73-Ubuntu SMP Tue Dec 16 00:22:43 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

If you connect the USB to the server you should see this message :

[email protected]:/# dmesg

[80186.156023] usb 4-2: new low-speed USB device number 2 using uhci_hcd
[80186.330039] usb 4-2: New USB device found, idVendor=0665, idProduct=5161
[80186.330046] usb 4-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[80186.330049] usb 4-2: Product: USB to Serial
[80186.330051] usb 4-2: Manufacturer: INNO TECH
[80186.360169] hid-generic 0003:0665:5161.0003: hiddev0,hidraw2: USB HID v1.00 Device [INNO TECH USB to Serial] on usb-0000:00:1d.2-2/input0

Note the USB descriptor for later : 0665:5161

Step 1 : install nut

[email protected]:/# sudo apt-get install nut nut-cgi

Add UPS config, for my UPS i used the name : must-pa-2012

[email protected]:/# nano /etc/nut/ups.conf
Add the following lines :

[must-pa-2012]
driver = blazer_usb
port = auto

Start ups monitor:

#sudo upsdrvctl start

You may receive the error message below :

Can't claim USB device [0665:5161]: could not detach kernel driver from
interface 0: Operation not permitted
Driver failed to start (exit status=1)

This means that there is a problem with permissions, so we need to set the permission and then reboot.

Set permissions for UPS, remember the descriptor noted above, 0665:5161 in my case:

[email protected]:/# nano /etc/udev/rules.d/10-must-pa-2012.rules
Add the line :

SYSFS{idVendor}=='0665', SYSFS{idProduct}=='5161', MODE='0666'

Edit nut.conf

[email protected]:/# nano /etc/nut/nut.conf
Change MODE to standalone :

MODE=standalone

Create a user for nut :

[email protected]:/# nano /etc/nut/upsd.users

[ups_admin]
password = 12345678
upsmon master

Add the ups to monitoring software :

[email protected]:/# nano /etc/nut/upsmon.conf

MONITOR [email protected] 1 ups_admin 12345678

Try to start the ups monitoring :

[email protected]:/# upsdrvctl start

Network UPS Tools - UPS driver controller 2.7.1
Network UPS Tools - Megatec/Q1 protocol USB driver 0.10 (2.7.1)
Can't chdir to /var/run/nut: No such file or directory
Driver failed to start (exit status=1)

[email protected]:/# service nut-server start

* Starting NUT - power devices information server and drivers

Show UPS statisics :

[email protected]:/# upsc [email protected]

Init SSL without certificate database
battery.charge: 33
battery.voltage: 22.50
battery.voltage.high: 26.00
battery.voltage.low: 20.80
battery.voltage.nominal: 24.0
device.type: ups
driver.name: blazer_usb
driver.parameter.pollinterval: 2
driver.parameter.port: auto
driver.version: 2.7.1
driver.version.internal: 0.10
input.current.nominal: 9.0
input.frequency: 50.1
input.frequency.nominal: 50
input.voltage: 198.0
input.voltage.fault: 198.0
input.voltage.nominal: 220
output.voltage: 233.6
ups.beeper.status: enabled
ups.delay.shutdown: 30
ups.delay.start: 180
ups.load: 13
ups.productid: 5161
ups.status: OL BOOST
ups.type: offline / line interactive
ups.vendorid: 0665

UPS graphic info :

Enable CGI in Apache :

[email protected]:/usr/lib/cgi-bin# a2enmod cgi

AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message
Your MPM seems to be threaded. Selecting cgid instead of cgi.
Enabling module cgid.
To activate the new configuration, you need to run:
service apache2 restart

Restart Apache :

[email protected]:/usr/lib/cgi-bin# service apache2 restart

* Restarting web server apache2

Access the server IP, mine is 10.10.10.250 :

http://10.10.10.250/cgi-bin/nut/upsstats.cgi

Update 18.07.2015
If you receive a message about no hosts to monitor “Error: no hosts to monitor (check hosts.conf)“, you must edit /etc/nut/hosts.conf and add the following line :

nano /etc/nut/hosts.conf

MONITOR [email protected] "Local UPS"

This guide works also with a SOCOMEC NET0600-PE UPS.

UPS Ubuntu