Method and apparatus for determining resource node, method of controlling resource node, resource node, and computer product

By transmitting information on a condition enabling execution of one service to a resource broker that manages an assignment state of a resource node used among services, a resource node enabling execution of one service out of resource nodes used among services is specified. And by receiving information on use state of the resource node out of the specified resource nodes and based on the information on the received use state, a resource node used for one service out of specified resource nodes is determined.