Patent ID: 7958210

Claim:
A non-transitory computer readable storage medium recording an update management program for causing a computer to manage update times of programs implemented in a plurality of managed nodes included in a cluster system, the update management program causing the computer to execute a process comprising: a group selecting step of in response to an instruction for updating the programs, causing group selecting means to refer to update management information storing means for storing an update management table in which the plurality of managed nodes are classified into a plurality of groups and a program update sequence of the plurality of groups is defined, and sequentially select the plurality of groups in accordance with the program update sequence in such a manner that after program update processing has been completed in all ones of the plurality of managed nodes which are included in the last selected one of the plurality of groups, the next one of the plurality of groups is selected; an update instructing step of referring to the update management table and transmitting a program update request to each of the plurality of managed nodes which are included in one of the plurality of groups which has been selected by the group selecting means; and a completion notification acquiring step of receiving an update completion notification from each of plurality of managed nodes to which the program update request has been transmitted, and notifying the group selecting means that program update processing has been completed in one of the plurality of managed nodes which has transmitted the update completion notification.