Instruction for installation of Network UPS Tools (NUT) on fun_plug v 0.5. These instructions are based on information found at the Network UPS Tool website (http://networkupstools.org/doc/2.2.0/INSTALL.html).
The primary goal of the Network UPS Tools (NUT) project is to provide reliable monitoring of UPS and PDU hardware and ensure safe shutdowns of the systems which are connected. We attempt to monitor every kind of UPS and PDU, given sufficient interest. Summary from NUT project page.
Successful installation of NUT requires three packages from fonz's website (http://www.inreto.de/dns323/fun-plug/0.5/packages/). They are;
DNS323 is operating with Firmware version 1.05 or 1.06 (Installation has not been tested with other firmware versions).
Fun_Plug 0.5 installed and operable.
A functional telnet connection.
For this example the three packages will be saved to the /mnt/HD_a2/packages directory. Change to this directory by issuing the following command at a telnet prompt;
cd /mnt/HD_a2/packages
Use rsync to obtain the three packages and store them in the /mnt/HD_a2/packages directory on your DNS323. Obtain the files by issuing the following commands;
rsync -av inreto.de::dns323/fun-plug/0.5/packages/neon-0.25.5-1.tgz . rsync -av inreto.de::dns323/fun-plug/0.5/packages/libusb-0.1.12-1.tgz . rsync -av inreto.de::dns323/fun-plug/0.5/packages/nut-2.2.2-3.tgz .
The packages can be installed from the /mnt/HD_a2/packages directory using the following commands;
funpkg -i neon-0.25.5-1.tgz funpkg -i libusb-0.1.12-1.tgz funpkg -i nut-2.2.2-3.tgz
Once the packages are downloaded and installed the NUT environment will need to be configured before you'll be able to access and control your UPS. Or should I say your UPS will be able to control your DNS323! Instruction found at the Network UPS Tool website (http://networkupstools.org/doc/2.2.0/INSTALL.html) advised creation of a Group and a user named nutmon. Creating such allows one to establish a higher level of security on configuration files.
For the purposes of this exercise a group named nutwill be added. At the prompt enter the following command;
groupadd nut
For the purposes of this exercise a user named nutmon will be created and added to the group named nut. The user is created and added to the existing group by entering the following command;
adduser -s /bin/false -G nut -H nutmon
The system will respond with:
Changing password for ups Enter the new password (minimum of 5, maximum of 8 characters) Please use a combination of upper and lower case letters and numbers.
Selected a password for nutmon then enter it at the New password: and again at the Re-enter new password: prompts.
Note
nutmon. If you use a different password be sure to include it when configuring the upsd.users file.Each time the DNS323 is booted key files are copied from NVRAM to the /etc directory. When this occurs information pertaining to those Groups and Users added as shown above will be lost. Loss can be prevented by writing group and user information to NVRAM using the store-passwd.sh script.
store-passwd.sh
During NUT installation sample configuration files were copied to the /ffp/etc directory. These files are identifiable by their .sample suffix. During this step of the configuration process a ups.conf file will be created from the ups.conf.sample file. This is achieved by copying the sample ups configuration file to the /ffp/etc directory. The command to do so follows;
cp /ffp/etc/examples/nut/ups.conf.sample /ffp/etc/ups.conf
Prior to modifying the ups.conf file you'll need to determine which driver is used with your specific UPS. A UPS hardware compatibility list is located on the https://networkupstools.org/stable-hcl.html website. Review this list to determine which driver is required for your specific application. Please note these instructions pertain specifically to USB connected UPS.
Use your favourite editor (I use Notepad++) to open the ups.conf file, enter and subsequently save your specific settings.
An APC Back-UPS RS 900 is connected to the USB port on my DNS323. Settings for this device would be;
[APC_UPS] driver = usbhid-ups port = USB desc = "Back-UPS RS 900"
Start the NUT driver. This is accomplished by issuing the following command;
upsdrvctl start
Make sure the driver doesn't report any errors. It should show a few details about the hardware and then enter the background. You should get back to the command prompt a few seconds later. For reference, a successful start of the usbhid-ups driver looks like this:
Network UPS Tools - UPS driver controller 2.2.2 Network UPS Tools: 0.29 USB communication driver - core 0.33 (2.2.2) Using subdriver: APC HID 0.92
If the driver doesn't start cleanly, make sure you have picked the right one for your hardware. You might need to try other drivers by changing the “driver=” value in ups.conf file.
Be sure to check the driver's man page to see if it needs any extra settings in ups.conf to detect your hardware.
If it says “can't bind /var/state/ups/…” or similar, then your state path probably isn't writable by the driver. Check the permissions and mode on that directory.
During this step of the configuration process a upsd.conf file will be created from the upsd.conf.sample file. This is achieved by copying the sample upsd configuration file to the /ffp/etc directory. The command to do so follows;
cp /ffp/etc/examples/nut/upsd.conf.sample /ffp/etc/upsd.conf
Configuring access by a specific host requires modification of the upsd.conf file. For this example it will be necessary to add a host named DNS323 on IP 192.168.1.50 to the server configuration file. Doing so will permit optimum configuration of the monitor tool. Use your favourite editor to open the upsd.conf file, enter and subsequently save the following lines;
ACL DNS323 192.168.1.50/32 ACCEPT DNS323
During this step of the configuration process a upsd.users file will be created from the upsd.users.sample file. This is achieved by copying the sample upsd configuration file to the /ffp/etc directory. The command to do so follows;
cp /ffp/etc/examples/nut/upsd.users.sample /ffp/etc/upsd.users
Use your favourite editor to open the upsd.users file, enter and subsequently save your specific settings.
[nutmon] password = NUTMonPW allowfrom = localhost actions = SET instcmds = ALL
While we're at it let's create an entry for monitoring tool.
[monuser] password = MonUserPW allowfrom = DNS323 upsmon master
Start the network server. This is accomplished by issuing the following command;
upsd
The Network Server can be stopped by issuing an upsd -c stop command.
Make sure that the UPS is providing good status data by issuing the following command;
upsc APC_UPS@localhost ups.status
If all is okay then OL (On-line) should appear after the upsc command is issued. If the unit running is On-Battery you would see OB and if charging you would see OC.
The upsc command is also used to look at all status that is being monitored. Look at all of the status data by issuing the following command;
upsc APC_UPS@localhost
What happens now depends on the kind of UPS and driver you have. In the list that follows is sample data from an APC Back-UPS RS 900.
battery.charge: 100 battery.charge.low: 10 battery.charge.warning: 50 battery.date: 2001/09/25 battery.mfr.date: 2008/06/05 battery.runtime: 2535 battery.runtime.low: 120 battery.temperature: 29.2 battery.type: PbAc battery.voltage: 27.8 battery.voltage.nominal: 24.0 device.mfr: American Power Conversion device.model: Back-UPS RS 900 device.serial: 5B0743U08220 device.type: ups driver.name: usbhid-ups driver.parameter.pollfreq: 30 driver.parameter.pollinterval: 2 driver.parameter.port: AUTO driver.version: 2.4.1 driver.version.data: APC HID 0.93 driver.version.internal: 0.34 input.voltage: 122.0 input.voltage.nominal: 120 output.voltage: 120.0 output.voltage.nominal: 120.0 ups.beeper.status: enabled ups.delay.shutdown: 20 ups.firmware: 9.o2 .D ups.firmware.aux: o2 ups.load: 18.0 ups.mfr: American Power Conversion ups.mfr.date: 2007/10/24 ups.model: Back-UPS RS 900 ups.productid: 0002 ups.serial: 5B0743U08220 ups.status: OL ups.test.result: No test initiated ups.timer.reboot: 0 ups.timer.shutdown: -1 ups.vendorid: 051d
During this step of the configuration process a upsmon.conf file will be created from the upsmon.conf.sample file. This is achieved by copying the sample upsmon configuration file to the /ffp/etc directory. The command to do so follows;
cp /ffp/etc/examples/nut/upsmon.conf.sample /ffp/etc/upsmon.conf
Use your favourite editor to open the upsmon.conf file and edit line 30 so that it reads;
RUN_AS_USER nutmon
instead of;
# RUN_AS_USER nutmon
With the the upsmon.conf file still open in your editor add the following at line 85;
MONITOR APC_UPS@DNS323 1 monuser MonUserPW master
Note
monuser was added to the upsd.users file. If you used a different password, which you should, be sure to replace MonUserPW with the password that you set in the upsd.users file.Start the upsmon Monitor. This is accomplished by issuing the following command;
upsmon
Many of NUT's configuration files contain sensitive data; user names and passwords. To guard against inappropriate access of this information restricting access to users belonging to the nut group is recommended. This is achieved through the following commands;
chown root:nut /ffp/etc/ups.conf /ffp/etc/upsd.conf /ffp/etc/upsd.users /ffp/etc/upsmon.conf chmod 0640 /ffp/etc/ups.conf /ffp/etc/upsd.conf /ffp/etc/upsd.users /ffp/etc/upsmon.conf
It will also be necessary to change ownership of /ffp/var/state/ups directory. This is achieved through the following commands;
chown root:nut /ffp/var/state/ups chmod 0770 /ffp/var/state/ups
You can Telnet to the DNS323 each time you want to start NUT or use a startup script. The following can be added to a nut.sh script file and stored in the /ffp/start directory by copying the content of the code box into your favourite editor then saving the resultant file as /ffp/start/nut.sh.
Use this script for DNS323 firmware versions prior to 1.07.
#!/ffp/bin/sh
# PROVIDE: nut
. /ffp/etc/ffp.subr
name="nut"
start_cmd="nut_start"
stop_cmd="nut_stop"
nut_start()
{
# Start NUT driver for UPS hardware.
/ffp/bin/upsdrvctl start
# Start NUT Network Server
/ffp/sbin/upsd
# Start NUT monitor agent
/ffp/sbin/upsmon -u monuser
}
nut_stop()
{
# Stop NUT monitor agent
/ffp/sbin/upsmon -c stop
# Stop NUT Network Server
/ffp/sbin/upsd -c stop
# Stop NUT driver for UPS hardware.
/ffp/bin/upsdrvctl stop
}
run_rc_command "$1"
Use this script for DNS323 firmware version 1.07.
#!/ffp/bin/sh
# PROVIDE: nut
. /ffp/etc/ffp.subr
name="nut"
start_cmd="nut_start"
stop_cmd="nut_stop"
nut_start()
{
#####################
# We're using NUT UPS from ffp; #
#####################
############################################
# Stop built in NUT UPS deamons in preparation for starting ffp NUT UPS #
############################################
if ps | grep /usr/local/ups/bin/usbhid-ups | grep -v grep
then
echo "* Stopping Default UPS Services"
# Stop NUT Network Server
/sys/crfs/sbin/upsd -c stop
# Stop NUT driver for UPS hardware.
/sys/crfs/sbin/upsdrvctl stop
fi
sleep 2
##############
# Start ffp NUT UPS #
##############
# Start NUT driver for UPS hardware.
/ffp/bin/upsdrvctl start
# Start NUT Network Server
/ffp/sbin/upsd
# Start NUT monitor agent
/ffp/sbin/upsmon -u monuser
}
nut_stop()
{
# Stop NUT monitor agent
/ffp/sbin/upsmon -c stop
# Stop NUT Network Server
/ffp/sbin/upsd -c stop
# Stop NUT driver for UPS hardware.
/ffp/bin/upsdrvctl stop
}
run_rc_command "$1"
Don't forget to make it runnable:
chmod a+x /ffp/start/nut.sh
If you have a Windows PC connected to the same UPS then a Windows Application named WinNUT may be of interest to you. See WinNUT for details.
For WinNUT to run successfully it will be necessary to add user information to the upsd.users and host information to the upsd.conf files located on the DNS323.
Use your favourite editor to open the upsd.users file, enter and subsequently save your specific settings.
[winmonuser] password = WinMonUserPW allowfrom = Remote-PC upsmon slave
Configuring access for the remote host requires modification of the upsd.conf file. For this example it will be necessary to add a host named Remote-PC on IP 192.168.1.200 to the server configuration file. Use your favourite editor to open the upsd.conf file, enter and subsequently save the following lines;
ACL DNS323 192.168.1.200/32 ACCEPT Remote-PC
If the NUT Server is running when this change is made it will be necessary to reload the configuration file. This can be done by issuing the following command;
upsd -reload