[Pacemaker] Low cost stonith device

[Remi Broemeling]

Hi Mario -- I was just looking into this myself, today.  I think the 
lowest cost that you'll be able to find is an IPMI card for your 
motherboard (as long as the motherboard in question supports it).  To 
find out you'll need to look into your specific model of motherboard and 
see what is needed (or even if it is possible).  IPMI cards aren't 
foolproof and have their own problems; but it's better than nothing, I 
would think.

I think that your idea for fencing at the switch would be workable; but 
how exactly to accomplish that would depend on the switch that you were 
talking about; as the commands (and even if external ability to do so is 
available) would be switch/manufacturer-dependent.

Of course even lower cost (but even more problematic) is simply using 
external/ssh to shutdown the server to be killed, as that should be free.

See here for more documentation on STONITH: 
http://www.clusterlabs.org/mediawiki/images/f/f2/Crm_fencing.pdf

Mario Giammarco wrote:
> Hello,
>
> Can you suggest me a list of stonith devices compatible with 
> pacemaker?
>
> I need a low cost one.
>
> I have also another idea to build a low cost stonith device:
>
> I have intelligent switches. To stonith a node I can send to
>  a switch the command 
> to turn off all ethernet ports linked to the node to be fenced. 
>
> So the node is powered on but it cannot do any harm because 
> it is disconnected 
> from network.
>
> Is it a good idea? How can I implement it?
>
> Thanks in advance for any help.
>
> Mario
>   
-- 

Remi Broemeling
Sr System Administrator

Nexopia.com Inc.
direct: 780 444 1250 ext 435
email: remi at nexopia.com <mailto:remi at nexopia.com>
fax: 780 487 0376

www.nexopia.com <http://www.nexopia.com>

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