Apparatus and method for identifying a virtual machine having changeable settings

Patent metadata

Field	Value
Publication number	US-10048978-B2
Application number	US-201615006620-A
Country	US
Kind code	B2
Filing date	Jan 26, 2016
Priority date	Mar 9, 2015
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

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 that causes a computer to execute a 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, generating first identification information of the first virtual machine, the first identification information being unique to a first internal time of the computer corresponding to the first time;
transmitting the first identification information to the first virtual machine to store the first identification information therein;
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, generating second identification information of the second virtual machine, the second identification information being unique to a second internal time of the computer corresponding to the second time;
transmitting the second identification information to the second virtual machine to store the second identification information therein;
when the computer is able to connect with the first 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 first virtual machine; and
when the computer is unable to connect with the first virtual machine at the second time of detecting the second virtual machine, determining that the second virtual machine is the first virtual machine whose setting regarding network connection has been changed.

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 1 , wherein the process further comprises:
when transmitting the first identification information to the first virtual machine, 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 transmitting the second identification information to the second virtual machine, storing, in the memory, second management information for managing the second virtual machine, in association with the second identification information, the second management information including the first management information.

4. The non-transitory, computer-readable recording medium of claim 1 , wherein:
the first identification information includes connection information indicating setting regarding network connection of the first virtual machine; and
the detecting of the second virtual machine includes comparing connection information indicating setting regarding network connection of the second virtual machine with the first identification information stored in the second virtual machine.

5. The non-transitory, computer-readable recording medium of claim 1 , wherein:
the first identification information includes device identification information for identifying the computer; and
the second identification information includes the device identification information for identifying the computer.

6. 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, generating first identification information of the first virtual machine, the first identification information being unique to a first internal time of the computer corresponding to the first time;
transmitting the first identification information to the first virtual machine to store the first identification information therein;
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, generating second identification information of the second virtual machine, the second identification information being unique to a second internal time of the computer corresponding to the second time;
transmitting the second identification information to the second virtual machine to store the second identification information therein;
when the computer is able to connect with the first 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 first virtual machine; and
when the computer is unable to connect with the first virtual machine at the second time of detecting the second virtual machine, determining that the second virtual machine is the first virtual machine whose setting regarding network connection has been changed.

7. An apparatus comprising:
a memory; and
a processor coupled to the memory, and the 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 processor, generate first identification information of the first virtual machine, the first identification information being unique to a first internal time of the computer corresponding to the first time,
transmit the first identification information to the first virtual machine to store the first identification information therein;
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, generate second identification information of the second virtual machine, the second identification information being unique to a second internal time of the processor corresponding to the second time;
transmit the second identification information to the second virtual machine to store the second identification information therein;
when the processor is able to connect with the first 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 first virtual machine; and
when the processor is unable to connect with the first virtual machine at the second time of detecting the second virtual machine, determining that the second virtual machine is the first virtual machine whose setting regarding network connection has been changed.

Assignees

• Fujitsu Ltd

Inventors

• Iyobe Hiroshi

Classifications

• G06F2009/45591

  Monitoring or debugging support · CPC title

• G06F2009/45562

  Creating, deleting, cloning virtual machine instances · CPC title

• G06F9/45558 Primary

  Hypervisor-specific management and integration aspects · CPC title