Management apparatus, method, and privileged and confidential medium storing program to migrate a virtual machine when a resource shortage or booting occurs

A management apparatus for managing a plurality of server apparatuses, the management apparatus comprising:

• a memory configured to store capacity information that stores, in association with each of the plurality of server apparatuses, capacity values of resources of the each server apparatus;
• and
• a processor configured to:
• when a resource shortage or booting of a virtual machine occurs in a first server apparatus of the plurality of server apparatuses, request each of other server apparatuses to report a resource usage rate to obtain one or more resource usage rates;
• calculate, for each of the other server apparatuses, a score indicating resource surplus in the each server apparatus, based on the capacity information and the obtained one or more resource usage rates, to obtain a product sum by summing up products of the calculated score and each of the capacity values of the resources of the each server apparatus;
• select, from among the other server apparatuses, a second server apparatus for which the obtained product sum is largest among the other server apparatuses;
• and
• request the first server apparatus to perform a live migration to migrate the virtual machine running on the first server apparatus to the second server apparatus.

A method for a migration of a virtual machine among a plurality of server apparatuses, the method comprising:

• providing capacity information that stores, in association with each of the plurality of server apparatuses, capacity values of resources of the each server apparatus;
• when a resource shortage or booting of a virtual machine occurs in a first server apparatus of the plurality of server apparatuses, requesting other server apparatuses of the plurality of server apparatuses to report a resource usage rate to obtain one or more resource usage rates;
• calculating, for each of the other server apparatuses, a score indicating resource surplus in the each server apparatus, based on the capacity information and the obtained one or more resource usage rates, to obtain a product sum by summing up products of the calculated score and each of the capacity values of the resources of the each server apparatus;
• selecting, from among the other server apparatuses, a second server apparatus for which the obtained product sum is largest among the other server apparatuses;
• and
• requesting the first server apparatus to perform a live migration to migrate the virtual machines running on the first server apparatus to the second server apparatus.

A management apparatus for managing a plurality of server apparatuses, the management apparatus comprising:

• a processor to execute a procedure, the procedure comprising:
• providing capacity information that stores, in association with each of the plurality of server apparatuses, capacity values of resources of the each server apparatus;
• when a resource shortage or booting of a virtual machine occurs in a first server apparatus of the plurality of server apparatuses, to requesting each of other server apparatuses to report a resource usage rate to obtain one or more resource usage rates;
• calculating, for each of the other server apparatuses, a score indicating resource surplus in the each server apparatus, based on the capacity information and the obtained one or more resource usage rates, to obtain a product sum by summing up products of the calculated score and each of the capacity values of the resources of the each server apparatus;
• selecting, from among the other server apparatuses, a second server apparatus for which the obtained product sum is largest among the other server apparatuses;
• and
• requesting the first server apparatus to perform a live migration to migrate the virtual machine running on the first server apparatus to the second server apparatus.