On 7/4/2015 12:27 PM, g wrote: > > On 07/04/15 01:27, Jatin Davey wrote: > <> > >> In case of power failure on this server , how can i make the system to >> shutdown gracefully so that it unmounts the file-system and cleans up >> the required buffers. >> >> My server does have a battery backup so it will help in shutting down >> the system more gracefully. > use what is already packaged for centos: > > apcupsd - apc ups > http://www.apcupsd.com > or > nut - network ups tools > http://www.networkupstools.org/ > > apcupsd is designed to run with apc brand ups. > > nut is designed to run with apc and other brands. > > both monitor ups and will shut system down via shutdown command. > > i use apcupsd on my system with an apc back-ups rs 800 and have never > had problems. > > during a 5 day power outage, i had change config so i could run system > when i used a gas powered generator to supply mains and voltage would > drop to a low of around 90 v. > > > hth. > > My server supports ACPI 4.0 standard , Will that be helpful ? Thanks Jatin