Method and apparatus for improved cluster administration

摘要

The present inventions provide a cluster administration system that is capable of handling a cluster having one or more computing devices. The number of computing devices that may be included in a cluster is limited only by practical considerations rather than software or hardware limitations. In one embodiment, a cluster administration system includes a cluster of computing devices, one of the computing devices being an owner. The cluster further includes a resource. Direct access to the resource by the computing devices is controlled by the owner of the cluster. The cluster administration system also includes an arbiter. The arbiter and the cluster are in communication with each other and a network, the cluster providing the network with access to the storage device. The arbiter controls the admission of new computing devices to the cluster when the owner of the cluster is incapable of admitting the new computing device. Having the arbiter outside the cluster provides greater reliability. The arbiter is not affected by failures within the cluster. One or more of the computing devices of the cluster may fail, but the administration of the cluster is not affected. The functions of the arbiter may also be distributed among several independent computing devices which can hand off the primary duties of the arbiter should one or more of the independent computing devices fail to satisfactorily perform the duties of arbitration.