Apparatus and method for identifying a virtual machine having changeable settings

Patent metadata

Field	Value
Publication number	US-2016266924-A1
Application number	US-201615006620-A
Country	US
Kind code	A1
Filing date	Jan 26, 2016
Priority date	Mar 9, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

At a first time of detecting, from among a plurality of virtual machines as management targets, a first virtual machine that has not stored therein identification information generated based on an internal time of the computer, an apparatus causes the first virtual machine to store first identification information generated based on a first internal time of the computer corresponding to the first time, and at a second time of detecting a second virtual machine which has stored the first identification information and whose setting regarding network connection has been changed after storing the first identification information, the apparatus cause the second virtual machine to store second identification information generated based on a second internal time of the computer corresponding to the second time.

First claim

What is claimed is:

1 . A non-transitory, computer-readable recording medium having stored therein a program for causing a computer to execute a process, the process comprising:
at a first time of detecting, from among a plurality of virtual machines as management targets, a first virtual machine that has not stored therein identification information generated based on an internal time of the computer, causing the first virtual machine to store first identification information generated based on a first internal time of the computer corresponding to the first time; and at a second time of detecting a second virtual machine which has stored the first identification information and whose setting regarding network connection has been changed after storing the first identification information, causing the second virtual machine to store second identification information generated based on a second internal time of the computer corresponding to the second time.

2 . The non-transitory, computer-readable recording medium of claim 1 , wherein the process further comprises:
identifying each of the plurality of virtual machines, based on the first or second identification information that is respectively stored in the plurality of virtual machines.

3 . The non-transitory, computer-readable recording medium of claim 2 , wherein the process further comprises:
when the computer is able to connect with a third virtual machine identified based on the first identification information stored in the second virtual machine, at the second time of detecting the second virtual machine, determining that the second virtual machine is a replica of the third virtual machine; and when the computer is unable to connect with the third virtual machine at the second time of detecting the second virtual machine, determining that the second virtual machine is the third virtual machine whose setting regarding network connection has been changed.

4 . The non-transitory, computer-readable recording medium of claim 1 , wherein the process further comprises:
when causing the first virtual machine to store the first identification information, storing, in a memory provided for the computer, first management information for managing the first virtual machine, in association with the stored first identification information; and when causing the second virtual machine to store the second identification information, storing, in the memory, a replica of the first management information corresponding to the first identification information that has been stored in the second virtual machine at the second time of detecting the second virtual machine, as second management information for managing the second virtual machine.

5 . The non-transitory, computer-readable recording medium of claim 1 , wherein the process comprises:
when causing the first virtual machine to store the first identification information, causing the first identification information to include connection information indicating setting regarding network connection of the first virtual machine; and when causing the second virtual machine to store the second identification information, detecting a virtual machine that stores the first identification information including connection information different from current setting regarding network connection, as the second virtual machine.

6 . The non-transitory, computer-readable recording medium of claim 1 , wherein the process comprises:
when causing the first virtual machine to store the first identification information, causing the first identification information to include device identification information for identifying the computer; and when causing the second virtual machine to store the second identification information, causing the second identification information to include the device identification information for identifying the computer.

7 . A method performed by a computer, the method comprising:
at a first time of detecting, from among a plurality of virtual machines as management targets, a first virtual machine that has not stored therein identification information generated based on an internal time of the computer, causing the first virtual machine to store first identification information generated based on a first internal time of the computer corresponding to the first time; and at a second time of detecting a second virtual machine which has stored the first identification information and whose setting regarding network connection has been changed after storing the first identification information, causing the second virtual machine to store second identification information generated based on a second internal time of the computer corresponding to the second time.

8 . An apparatus comprising:
a processor configured to: at a first time of detecting, from among a plurality of virtual machines as management targets, a first virtual machine that has not stored therein identification information generated based on an internal time of the computer, cause the first virtual machine to store first identification information generated based on a first internal time of the computer corresponding to the first time, and at a second time of detecting a second virtual machine which has stored the first identification information and whose setting regarding network connection has been changed after storing the first identification information, cause the second virtual machine to store second identification information generated based on a second internal time of the computer corresponding to the second time; and a memory coupled to the processor, the memory being configured to store first and second identification information.

Assignees

• Fujitsu Ltd

Inventors

• Iyobe Hiroshi

Classifications

• G06F2009/45562

  Creating, deleting, cloning virtual machine instances · CPC title

• G06F2009/45591

  Monitoring or debugging support · CPC title

• G06F9/45558 Primary

  Hypervisor-specific management and integration aspects · CPC title

• G06F2009/45583

  Memory management, e.g. access or allocation · CPC title