I have an APC Back-UPS XS1500 powering my computer. It may be overkill for a single computer but it makes me feel secure.
Gnome power management will not install on CentOS 4.4 because of dependency problems.
I have installed the acpupsd daemon and this will protect me against power failure but the GUI interface to it, gapcmon, will not install due to dependency problems. I know that some will not consider a GUI interface important but I like to see what is happening if and when my A/C power gets disconnected and my computer is running on UPS battery power, and I like to be informed of this when I am online. Without gapcmon, or trying to hack my own program, this is not possible with CentOS 4.4, although as I said the apcupsd daemon will automatically and gracefully shut me down if my A/C power goes off and my UPS gets close to running out of backup battery power..
I realize that CentOS 4.4 is based on reliability, and not the latest and greatest software out there, but I am wondering what total UPS solution actually exists for it, or for RHEL4 which customers of the latter have used. I can live with apcupsd, and I realize that with an upcoming CentOS 5 there will probably be better compatibility, but I was wondering if there is any other total solution for the time being which anyone else has used. Thanks !