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

Sat Jul 4 08:32:07 UTC 2015
Jatin Davey <jashokda at cisco.com>

On 7/4/2015 1:55 PM, John R Pierce wrote:
> On 7/4/2015 1:02 AM, Jatin Davey wrote:
>> [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 ? 
> I've never heard of a UPS built into a server, every one I've ever 
> seen has been external... the mains power cable(s) for the server are 
> plugged into the UPS.     The UPS communications can be over ethernet, 
> or USB, or serial signaling cable, depending on what sort of UPS.   
> for an example, in my lab, each of my two racks has a pair of 7KVA 
> UPS's in the bottom of the rack.  these UPS's also have network cards, 
> and are plugged into my management LAN.   for my servers to talk to 
> these UPS's, I need to know the IP address that the UPS is configured 
> for.
No , i was referring to the battery backup unit within the server. Since 
the server was installed by someone else across geographies i am not 
aware of its details. I have found that the server does not have a 
battery backup unit as seen from the output below:

[root at node-103 ~]# ls /proc/acpi/battery/
[root at node-103 ~]#

As of the UPS connectivity over LAN , I dont think this is done for the 
server that i am using currently.