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North American Network Operators Group

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Re: Operate until failure

  • From: poptix
  • Date: Sat Feb 03 05:37:39 2001

First thing that comes to mind is a perl script that, given the correct
password/passphrase can `ssh -l [machine] shutdown -h now`, seems pretty
simply to me, assuming you keep a list of all the servers current with a
common RSA auth key or whatnot.

			Matthew S. Hallacy
			XtraTyme Technologies

On 8 Jan 2001, Sean Donelan wrote:

> On Mon, 08 January 2001, Henry Yen wrote:
> > And if you are running a late-model linux (preferably RedHat), you can
> > download APC's own "award-winning PowerChute Plus" software for linux from
> > their website.  It seems to be identical to PowerChutePlus running on
> > any other platforms, except that the interface is through X86.
> And what if you are not using APCs?
> One issue with highly redudandent data centers is the failure modes are
> "interesting."  You don't want to shutdown due to a single UPS failure, so
> you don't use something simple like PowerChute Plus.  You most likely don't
> want to shutdown based on any automatic signal.  However, you do want a way
> for an operator to gracefully shutdown a lot of equipment quickly when
> the decision is made.
> For a server farm, with potentially thousands of individual systems, is
> there any standard piece of software you can install on all of the systems
> to act as a receiver of a signal to begin a graceful shutdown that does
> not depend on a vendor's proprietary interface?  Preferabally one which
> does not involve running a lot of additional wires.
> I know, everyone says their systems will never fail.  Think of this
> as the "else" statement for the condition which will never happen.
> Again this is only needed if people want a gracefull shutdown.  If
> you can live with a hard shutdown, you wouldn't require this.  If you
> use ctrl-alt-del as a normal management practice, I suspect you don't
> really require a graceful shutdown.

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