Management server, and virtual machine move control method

摘要

A program that performs a virtual machine move control predicts a resource shortage, predicted to occur for a predetermined time period, of a physical server that includes multiple virtual machines and that is included in a management server; specifies a virtual machine that eliminate the resource shortage by moving, at a time point at which the predicted resource shortage occurs, among the virtual machine included in the physical server, for which the resource shortage is predicted, to another physical server; and moves the specified virtual machine to the other physical server on the basis of the resource usage of the specified virtual machine for the predetermined time period and on the basis of a time point that is associated with the resource usage.

主权项

1. A non-transitory computer readable storage medium having stored therein a program causing a computer to execute a process comprising:
predicting a resource shortage of a first physical machine for a specific time period, the first physical machine operating a plurality of virtual machines, the resource shortage indicating that a resource usage by the first physical machine exceeds, at a time within the specific time period, an upper limit specified for the first physical machine, wherein the resource usage is predicted at a time during the specific time period; determining combinations of virtual machines from among the plurality of virtual machines, the predicted resource shortage being avoided by moving any of the determined combinations from the first physical machine to a second physical machine, and first specifying combinations each including a minimum number of virtual machines among the determined combinations; second specifying a combination from among the combinations specified at the first specifying, wherein a time for the combination, that precedes a time when the predicted resource shortage occurs, and when a resource usage by the combination is predicted to be a minimum during the specific time period, is earlier than times for other first specified combinations; and moving the combination to the second physical machine at the time during the specific time period when the resource usage by the combination is predicted to be the minimum.