centos cluster on esx5i

Hi,

I want to experiment centos cluster on my esx host. Can I experiment by installing centos on 2 vm guests?
mokkanAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
Yes, Centos is a supported Guest OS for VMware vSphere ESXi 5.0.

also see here

http://www.zoobey.com/index.php/resources/all-articles-list/100-configuring-a-high-availability-clus
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mokkanAuthor Commented:
Thank you very much it looks good.  I have a question regarding the cluster IP  addresss, basically apache is running on cluster IP(172.16.4.82)(From the example). Basically hearbeat daemon will manage the cluster IP address and will assign to node1 or node2 ?
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mokkanAuthor Commented:
How does switch know about the cluster IP address since it is not assigned to any of the physical ports on the server?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
The cluster IP address is the Address you use to communicate with the cluster.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
It's a virtual IP address.
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mokkanAuthor Commented:
I totally understand, but how does application knows this IP address on which node?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Clustering software creates a virtual IP address, and this load balances between the two nodes in the cluster.
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mokkanAuthor Commented:
I understand, but it doesn't  bind with any of the interface right like eht0:1 or ... like that right? It resides in cluster  pacakge?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Correct.
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mokkanAuthor Commented:
sorry still confused, how  does switch knows about this IP address? Does cluster package broadcast and register with the switch?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Packets are sent to the Cluster IP Address, the Cluster software has the node1 and node2 addresses, and sends the packet to the relevant node in the cluster.

Cluster IP Address are unicast or multicast. Cluster IP address is based on a Mac Address.
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mokkanAuthor Commented:
thank you,  sorry still have question, If you ping for cluster ip address, who will return?
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