Cluster system

Abstract

A cluster system of the present invention is a cluster system including a plurality of node devices. Each of the node devices is connected with the other node devices by a first network and a second network, and includes: a first node managing unit configured to operate on an operating system embedded in an own device and detect operation statuses of the other node devices via the first network; a second node managing unit configured to operate without being affected by the operating system and detect operation statuses of the other node devices via the second network; and a node status judging unit configured to judge whether each of the node devices is in a down state according to a preset standard, based on results of the detection of the other node devices by the first node managing unit and the second node managing unit.

1 . A cluster system comprising a plurality of node devices, wherein the node devices are clustered each other via at least one network, and include:
 a controller configured to detect operation statuses of the other node devices, the controller being installed in the node device and managing the node device; and   a processor configured to detect operation statuses of the other node devices, and to determine whether one of the other node devices is in a down state according to a predefined rule based on results of the detection of the one of the other node devices by the controller and the processor.   
     
     
         2 . The cluster system according to  claim 1 , wherein the processor is configured to, in a case that both the controller and the processor detect that any of the node devices is in the down state, determine the node device to be in the down state. 
     
     
         3 . The cluster system according to  claim 2 , wherein the processor is configured to, in a case that the node device determined to be in the down state is executing a preset process, execute a node switching process of switching so that another of the node devices executes the preset process. 
     
     
         4 . The cluster system according to  claim 3 , wherein the controller is configured to operate without being affected by an operating system installed in the own device and monitor an operation status of hardware installed in the own device and, depending on a result of the monitoring, stop operation of the own device. 
     
     
         5 . The cluster system according to  claim 4 , wherein:
 the controller is configured to notify, to the processor, that the operation of the own device is due to be stopped based on the result of the monitoring;   the processor is configured to receive notification that the operation of the own device is due to be stopped from the controller and, in a case that the own device is executing a preset process, execute the node switching process of switching so that another of the other node devices executes the process, and notify completion of the node switching process to the controller after the completion of the node switching process; and   the controller is configured to stop the operation of the own device after receiving notification that the node switching process by the processor is completed.   
     
     
         6 . A non-transitory computer-readable storage medium storing a program comprising instructions for causing a plurality of node devices configuring a cluster system including the plurality of node devices clustered each other via at least one network, to realize:
 a controller configured to detect operation statuses of the other node devices, the controller being installed in the node device and managing the node device; and   a processor configured to detect operation statuses of the other node devices, and to determine whether one of the other node devices is in a down state according to a predefined rule based on results of the detection of the one of the other node devices by the controller and the processor.   
     
     
         7 . The non-transitory computer-readable storage medium storing the program according to  claim 6 , wherein the processor is configured to, in a case that both the controller and the processor detect that any of the node devices is in the down state, determine the node device to be in the down state. 
     
     
         8 . A node management method comprising, in a cluster system including a plurality of node devices clustered each other via at least one network:
 by a controller, detecting operation statuses of the other node devices, the controller being installed in the node device and managing the node device; and   by a processor, detecting operation statuses of the other node devices, and determining whether one of the other node devices is in a down state according to a predefined rule based on results of the detection of the one of the other node devices by the controller and the processor.   
     
     
         9 . The node management method according to  claim 8 , comprising:
 in a case that both the controller and the processor detect that any of the node devices is in the down state, determining the node device to be in the down state.