Chapter 8: Power, Environmental & Digital I/O
178 Console Server & RIM Gateway User Manual
Enter the Name of the particular remote UPS to be remotely monitored. This name must be the name that the
remote UPS was configured with on the remote console server (as the remote console server may itself have
multiple UPSes attached that it is managing locally with NUT). Optionally enter a Description
Enter the IP Address or DNS name of the remote console server* that is managing the remote UPS. (*This may
be another Opengear console server or it may be a generic Linux server running Network UPS Tools)
Note An example where centrally monitor remotely distributed UPSes is useful is a campus or large business site
where there’s a multitude of computer and other equipment sites spread afar, each with their own UPS supply …
and many of these (particularly the smaller sites) will be USB or serially connected.
Having a CM4001, ACM5000 or IM4004-5 at these remote sites would enable the system manager to centrally
monitor the status of the power supplies at all sites, and centralize alarms. So he/she can be warned to initiate a
call-out or take shut down actions
Check Log Status and specify the Log Rate (minutes between samples) if you wish the status from this UPS to
be logged. These logs can then be viewed from the Status: UPS Status screen
Check Enable Shutdown Script if this remote UPS is the UPS providing power to the console server itself. In the
event the UPS reaches critical battery status the custom script in /etc/config/scripts/ups-shutdown is run enabling
you to perform any "last gasp" actions
Click Apply
Note: The Remote UPS feature is supported on all console servers with V2.8 firmware and later. Earlier versions
supported a single remote “Monitored UPS” which could be set to trigger the console server shutdown script
8.2.3 Controlling UPS powered computers
One of the advantages of having a Managed UPS is that you can configure computers that draw power through that UPS
to be shut down gracefully in the event of UPS problems.
For Linux computers this can be done by setting up upsmon on each computer and directing them to monitor the console
server that is managing their UPS. This will set the specific conditions that will be used to initiate a power down of the
computer. Non-critical servers may be powered down some second after the UPS starts running on battery. Whereas
more critical servers may not be shut down till a low battery warning is received). Refer to the online NUT documentation
for details on how this is done:
http://eu1.networkupstools.org/doc/2.2.0/INSTALL.html
http://linux.die.net/man/5/upsmon.conf
http://linux.die.net/man/8/upsmon
An example upsmon.conf entry might look like:
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