摘要 |
A cluster system 1 for providing a plurality of virtual computer nodes to a client 5 has real nodes 3 a , 3 b and 3 c for executing an application, and a coordinator node 2 for assigning the real IP address that is the IP address of the real node with the IP address of the virtual computer node, and the real nodes 3 a , 3 b and 3 c and the coordinator node 2 store the IP management table of a corresponding table of the virtual IP address and the real IP address, and perform communication using the virtual IP address based on the IP management table.
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