Linux comes with GPL licensed open source apcupsd server ( daemon ) that can be used for power mangement and controlling most of APC's UPS models on Linux, BSD, Unix and MS-Windows operating systems. Apcupsd works with most of APC's Smart-UPS models as well as most simple signalling models such a Back-UPS, and BackUPS-Office. During a power failure, apcupsd will inform the users about the power failure and that a shutdown may occur. If power is not restored, a system shutdown will follow when the battery is exhausted, a timeout (seconds) expires, or runtime expires based on internal APC calculations determined by power consumption rates.
Login as ROOT ( Superuser )
Using YUM repository
# yum install apcupsd
SAMPLE Output :
Loaded plugins: product-id, protectbase, rhnplugin, subscription-manager Updating certificate-based repositories. Unable to read consumer identity 0 packages excluded due to repository protections Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package apcupsd.x86_64 0:3.14.10-1.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ==================================================================================================== Package Arch Version Repository Size ==================================================================================================== Installing: apcupsd x86_64 3.14.10-1.el6 epel 299 k Transaction Summary ==================================================================================================== Install 1 Package(s) Total download size: 299 k Installed size: 1.3 M Is this ok [y/N]: y Downloading Packages: apcupsd-3.14.10-1.el6.x86_64.rpm | 299 kB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : apcupsd-3.14.10-1.el6.x86_64 1/1 Installed products updated. Verifying : apcupsd-3.14.10-1.el6.x86_64 1/1 Installed: apcupsd.x86_64 0:3.14.10-1.el6 Complete!
Connect UPS : You need to connect the UPS to your Server using cable. Your will see an entry in /var/log/messages which will tell you that the UPS is connected.
Configure the UPS :
# vi /etc/apcupsd/pacupsd.conf
First give your UPS a name, this is particulary useful when you have multiple UPS installed in the office UPSNAME officeups1
Next, defines the type of cable connecting the UPS to your Linux BOX. In this example I am connecting my UPS using usb cable ... UPSCABLE usb
### Set UPS type to USB ### UPSTYPE usb device
Configuration Parameters ONBATTERYDELAY 6 - This defines the time in seconds from when a power failure is detected until we react to it with a onbattery event.
BATTERYLEVEL 5 - If during a power failure the remaining battery percentage *as reported by the UPS* is below or equal to MINUTES apcupsd will initiate a shutdown to the Linux BOX
