To monitor uninterruptible power supplies (UPS) from the company APC there is the possibility, apart from the Network UPS Tools described in 6.11 Monitoring UPS with the Network UPS Tools from page 149 of using the
apcupsd daemon, optimized specifically for use with these UPSs. The software can be obtained from http://www.apcupsd.com/ and is licensed under the GPL, despite the fact that it is vendor-dependent.
The principal function here is the capacity to be able to shut down systems in the event of power failure, rather than a mere monitoring function with Nagios. For this latter purpose, it is easier to configure the Network UPS Tools.
Nearly all Linux distributions contain a working
apcupsd package, so you ...