[Nut-upsuser] Batch shutdown?

Darin Perusich darin at darins.net
Tue May 1 14:29:01 UTC 2012

This document, http://rogerprice.org/NUT.html, should provide you with
some good detail on triggering a shutdown after an allotted time.


On Mon, Apr 30, 2012 at 9:11 PM, Moorcroft, Mark  (ARC-TSM)[ERC, Inc.]
<mark.moorcroft at nasa.gov> wrote:
> Hello list,
> I am a pretty green Linux admin managing 3 ROCKS CentOS clusters total
> about 2,000 cores. My predecessor set up NUT for me on the primary head
> node. We have about 42 Tripplite UPS units in the room. The way our power
> systems work I intend to use the NUT connected head node to shut down the
> entire server room any time power is lost for over 30 seconds or so. It is
> about 95% likely that any time the head node loses power the whole room
> has lost power. And for the most part we have no more than 2 to 3 minutes
> of battery power anyway so even a 30 second wait will be pushing things.
> The head node will be the only thing with a data connection to a UPS. The
> rest of the shutdown process must happen over the network.
> Can anyone point me to any resources to help me set up such a scenario? Is
> there any reason to run NUT anyplace besides the head node? What are the
> best practices for a scripted/staged shutdown. I have my concerns that we
> don¹t have the battery capacity for a wait time and orderly shutdown of
> the nodes and the RAID units. Our reseller GROSSLY underestimated the load
> requirements of the equipment they sold us.
> --
> Mark Moorcroft
> ERC Corp.
> 650-604-4784
> mailto:mark.moorcroft at nasa.gov

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