CentOS - Jul 2015 - Gracefully powering off system in case of power failure

Hi

I am using the system as shown below.

*********************************
[root at localhost sbin]# cat /etc/*release
LSB_VERSION=base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphi
cs-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Red Hat Enterprise Linux Server release 6.5 (Santiago)
Red Hat Enterprise Linux Server release 6.5 (Santiago)
[root at localhost sbin]# uname -a
Linux localhost.localdomain 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 
22:19:54 EST 2013 x86_64 x86_64 x86_64 GNU/Linux
[root at localhost sbin]#

**********************************

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.

I tried looking at this link:

https://www.olimex.com/forum/index.php?topic=3326.0

But it did not help. Appreciate if someone can help me in this regard.

Thanks
Jatin

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.


-- 

peace out.

-+-
If Bill Gates got a dime for every time Windows crashes...
 ...oh, wait. He does. THAT explains it!
-+-
in a world with out fences, who needs gates.
-+-

CentOS GNU/Linux 6.6

tc,hago.

g
.

On 7/3/2015 11:27 PM, Jatin Davey wrote:
> I am using the system as shown below.
>
> *********************************
> [root at localhost sbin]# cat /etc/*release
> ...
> Red Hat Enterprise Linux Server release 6.5 (Santiago)
yeah, they have their own support forums and stuff.

> 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.
>
if your UPS is on this list,
http://www.networkupstools.org/stable-hcl.html
install NUT (Network UPS Tools), available from the EPEL repository,  
and configure it to talk to your UPS.

NUT documentation:
http://www.networkupstools.org/docs/user-manual.chunked/index.html


> I tried looking at this link:
>
> https://www.olimex.com/forum/index.php?topic=3326.0
>
that  is advise for a tinylinux embedded system, not a EL 6 system.    
IMHO, you should never muck about with /etc/inittab on centos/rhel
> But it did not help. Appreciate if someone can help me in this regard.
I hope you restored your inittab to its original state.


-- 
john r pierce, recycling bits in santa cruz

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