[CentOS] Keeping machines online

[Rudi Ahlers]

Jerry Geis wrote:
> I am using centos 5.1. I want to keep my machines always powered on.
> Some machines (important ones) are UPS'd.
>
> I have also set in the BIOS (gigabyte motherboard) the power options
> that after power loss should do a full on.
>
> The other day we had just a momentary power drop.
> the UPS machines had no issue of course with that.
>
> However, the other machines did not come back on.
>
> Is there anything additional in Centos that can help ensure
> this machines turn back on. Perhaps something in acpi stuff?
> Does that need setup?
>
> Thanks for the discussion.
>
> Jerry
>
>
No.

If a PC is powered off, the OS (regardless of which OS), won't be able 
todo anything about it, since an OS is loaded after the PC's BIOS & 
POST. The only way around this, is setup something like nagios  on 
another server (you could have a few servers running with Nagios, 
monitoring each other), which can then send a WOL (Wake On Lan) signal 
to the PC's that have switched off.

Some more expensive UPS's have a function to turn PC's on when they're on

-- 

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
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