[CentOS] Gracefully powering off system in case of power failure

[Jatin Davey]

On 7/4/2015 1:07 PM, John R Pierce wrote:
> On 7/4/2015 12:28 AM, Jatin Davey wrote:
>>>
>> My server supports ACPI 4.0 standard , Will that be helpful ? 
>
> does `init 0` as a root command cause it to gracefully shut down and 
> power off ?      thats all the ACPI support you need.
[Jatin] Yes, init 0 does gracefully shutdown the server and power off.
>
>
> what brand/model UPS (battery backup) do you have ?
[Jatin] I am still reading through the documentation of my server to 
find out the battery backup in it. Is there any command within the OS 
that i can use to find out this information ?
> the UPS software, apcupsd and/or NUT, needs to listen to the UPS to 
> tell it when the power has failed, then it can tell your OS to 
> shutdown after a suitable delay (if your UPS is good for 30 minutes, 
> you might not want to shut down until the power has failed for 15 
> minutes, so brief outages don't cause a shutdown)
>
>
>