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[Linux-cluster] Minimalist cluster



What is the minimum arrangement of hardware to run a cluster to provide HA web services including MySQL?

Can it be done using just two machines with no NAS - each acting as a node with storage mirrored across the two machines and conga able to run on both?

Can IPMI fencing be used in such a case or is it necessary to have a power-controller that serialises requests to control the power?

What risks are inherent in such a minimalist arrangement?

Thanks

--
Keith Denby

keith eddystone com
01598 763455
07763 483168



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