> Date: Wed, 19 Aug 2009 06:52:55 -0500
> From: [email protected]
> To: [email protected]
> Subject: Re: [Linux-HA] stonith question
>
> Chris Card wrote:
> > I'm planning to use stonith with heartbeat (v1), and I understand that to
> > do this I need a "stonith" or "stonith_host" line in my ha.cf to get
> > heartbeat to call the stonith plugin with the appropriate parameters.
> >
> > What is not clear to me is under what conditions heartbeat will call the
> > stonith plugin to power off a machine - is this documented anywhere?
> >
> Not sure if a complete or even partially complete list exists, but in
> general a node is STONITHed whenever heartbeat needs to make sure that
> it is not using cluster resources. Here is a nice little article that
> includes some discussion on fencing:
>
> http://techthoughts.typepad.com/managing_computers/2007/10/split-brain-quo.html
> > Chris
Thanks Dave, that's a useful document, though I'd still like some definite info
about what heartbeat actually does.
I've been looking at the source, and one thing I noticed is that heartbeat
itself only seems to send a "reset" command to the stonith device, whereas the
stonith command line tool also accepts "on" and "off" as separate actions. Is
this the case, or am I missing something? Is there a way to make heartbeat
power off a machine and not automatically power it on again?
Chris
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