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Re: [Linux-cluster] question about number of fencing devices needed for a two node cluster

Many thanks for the advice, Digimer. 


> I know it would be desirable to have two devices for a fully redundant
> configuration, but after reading some examples from the docs (they are
> meant for two power switch), I still cannot understand why a single
> power switch connected to both servers and the switch taking power from
> the UPS, would not be a good configuration. There is a single UPS in the
> environment.
> ┬┐any experiences over this issue?
> regards,
> alvaro

That is sufficient. The only concern is that the PDU doesn't verify node 
death, so success is returned when the power is cut. This requires a 
little extra testing to make sure that your config is accurate. Once 
setup, use 'fence_node <name>' against either node and ensure that they 
really do go down.

E-Mail: digimer alteeve com
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Node Assassin:  http://nodeassassin.org

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