[34321] in North American Network Operators' Group
Re: Operate until failure
daemon@ATHENA.MIT.EDU (poptix@sleepybox.poptix.net)
Sat Feb 3 05:35:52 2001
Date: Sat, 3 Feb 2001 04:33:18 -0600 (CST)
From: <poptix@sleepybox.poptix.net>
To: Sean Donelan <sean@donelan.com>
Cc: <nanog@merit.edu>
In-Reply-To: <20010108223549.28492.cpmta@c004.sfo.cp.net>
Message-ID: <Pine.LNX.4.30.0102030431310.16915-100000@sleepybox.poptix.net>
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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.
>
>
>
