On 10/25/2012 08:55 PM, Josh Bowling wrote:
> I just got a couple IBM x3200 M3 servers and decided to turn them into an
> Ubuntu 12.04 64-bit based DRBD + Pacemaker/Corosync cluster. I have pretty
> much everything working, but read time and time again that if I don't have
> a STONITH device set up, I'm setting myself up for disaster. I've done my
> best to look around and try to figure out what the best device would be for
> these servers, but really have no idea.  In all honesty, STONITH devices in
> general are still a complete mystery to me.
> 
> According to the x3200 M3 manual, it does have IPMI built in for remote
> power management:
> 
> Integrated IPMI 2.0 support alerts IBM Systems Director to anomalous
>> environmental factors, such as
>> voltage and thermal conditions. It also supports highly secure remote
>> power control using data
>> encryption.
> 
> 
> I've seen a few tutorials on how to get the device setup with Pacemaker,
> but like I said, have no idea as to what hardware I need.
> Any ideas for this STONITH newbie?
> 
> Thanks in advance!

If your servers have IPMI (usually part of IBM's RSA out-of-band
management), then you are most of the way there. I've got a basic IPMI
tutorial that might help (it's for RHEL / CentOS, but the tools should
be common to Debian / Ubuntu);

https://alteeve.ca/w/IPMI

As soon as you can check the power status (and power on/off) the nodes,
you will be good. Adding support to pacemaker is then done via the
'fence_ipmilan' fence agent.

hth

-- 
Digimer
Papers and Projects: https://alteeve.ca/w/
What if the cure for cancer is trapped in the mind of a person without
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