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.