Non-transitory computer-readable recording medium, adjustment device, and adjustment method

An apparatus comprising:

• a memory configured to store configuration information related to a physical machine and a virtual machine that operates on the physical machine, and temporal information indicating a time turnaround for migration of the virtual machine from the physical machine to another physical machine;
• and
• a processor coupled to the memory and configured to:
• upon acquisition of data indicating a duration of a maintenance execution related to the physical machine, produce, based on the configuration information and the temporal information stored in the memory, a constraint condition for the virtual machine that operates on the physical machine, the constraint condition being used to determine a schedule of the migration,
• produce schedule information of the migration, based on the constraint condition and the duration of the maintenance execution, and
• output the schedule information to a device used by a user of the virtual machine.

A method comprising:

• upon acquisition of data indicating a duration of a maintenance execution related to a physical machine, producing a constraint condition for a virtual machine operating on the physical machine, based on configuration information related to the physical machine and the virtual machine and temporal information indicating a time turnaround for migration of the virtual machine from the physical machine to another physical machine, the constraint condition being used to determine a schedule of the migration;
• producing schedule information of the migration, based on the constraint condition and the duration of the maintenance execution;
• and
• outputting the schedule information to a device used by a user of the virtual machine.

A non-transitory, computer-readable recording medium having stored therein a program for causing a computer to execute a process, the process comprising:

• upon acquisition of data indicating a duration of a maintenance execution related to a physical machine, producing a constraint condition for a virtual machine operating on the physical machine based on configuration information related to the physical machine and the virtual machine and temporal information indicating a time turnaround for migration of the virtual machine from the physical machine to another physical machine, the constraint condition being used to determine a schedule of the migration;
• producing schedule information of the migration, based on the constraint condition and the duration of the maintenance execution;
• outputting the schedule information to a device used by a user of the virtual machine;
• and
• instructing execution of the migration of the virtual machine to the physical machine based on the produced schedule information.