WO2017124829A1

WO2017124829A1 - Method and device for restoring virtual machine

Info

Publication number: WO2017124829A1
Application number: PCT/CN2016/107036
Authority: WO
Inventors: 尹德升
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-01-18
Filing date: 2016-11-24
Publication date: 2017-07-27
Also published as: CN106980528A

Abstract

The disclosure discloses a method and device for restoring a virtual machine, wherein the method comprises: a control node detects a virtual machine satisfying an off-site restoration condition, searches in a correspondence relationship between the virtual machine, a compute node, and an operating state for a first operating state corresponding to the virtual machine satisfying the off-site restoration condition, determines that the first operating state is an empty state, and changes a compute node corresponding to the virtual machine satisfying the off-site restoration condition in the correspondence relationship to be a target compute node; and the control node searches in the correspondence relationship for a second operating state corresponding to the virtual machine satisfying the off-site restoration condition, determines that the second operating state is an empty state, changes the second operating state corresponding to the virtual machine satisfying the off-site restoration condition in the correspondence relationship to indicate that a virtual machine is being rebuilt, and sends to the target compute node a message that off-site restoration is performed. The invention realizes a virtual machine satisfying an off-site restoration condition.

Description

Method and device for restoring virtual machine

Technical field

The present disclosure relates to virtual technologies, such as to a method and apparatus for recovering a virtual machine.

Background technique

OpenStack is a free software and open source cloud computing management platform project licensed and developed by NASA (National Aeronautics and Space) and Rackspace. OpenStack supports a variety of complementary services. Provided as an Infrastructure as a Service (IaaS) solution, an open source project designed to provide software for the construction and management of public and private clouds.

In the implementation of the virtual machine in OpenStack, when the compute node is abnormally down, the virtual machine on the compute node cannot run. Although the service of the virtual machine may consider the switchover of the active and standby virtual machines, it is also necessary to virtualize the faulty compute node. The machine restarts on the available computing nodes in time. The virtual machine reborn in this scenario is the re-emergence of the virtual machine. When the virtual machine is reborn in another place, it is deployed on the destination computing node according to the original information stored in the database by the virtual machine.

Summary of the invention

One embodiment of the present disclosure provides a method for recovering a virtual machine, including:

The control node detects that the virtual machine needs to be regenerated in another place. In the corresponding relationship between the virtual machine, the computing node, and the operation state, the first operation state corresponding to the virtual machine that satisfies the remote regeneration condition is found; and the first operation state is determined as An empty state, changing a computing node corresponding to the virtual machine that satisfies the regenerative condition in the corresponding relationship to the target computing node;

The control node searches for a second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship, determines that the second operation state is an empty state, and changes the second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship to The virtual machine is being rebuilt and a message to regenerate the alien is sent to the destination compute node.

Optionally, after the control node detects that the virtual machine needs to be regenerated in another place, before the first operation state corresponding to the virtual machine that satisfies the remote regeneration condition, the method further includes:

The control node determines that the condition for re-emergence is satisfied.

Optionally, when the control node determines that the second operation state is a non-empty state, the method further includes:

The control node changes the computing node corresponding to the virtual machine that satisfies the off-site regeneration condition to the computing node before the change.

Optionally, the corresponding relationship further includes a virtual machine state, where the control node detects that the virtual machine needs to be regenerated locally:

The control node detects that the computing node is powered off, finds the virtual machine and the virtual machine state corresponding to the powered-down computing node in the corresponding relationship, and determines that the found virtual machine state is in the running state, and determines that the discovered node needs to be found. The virtual machine is reborn in another place.

Another embodiment of the present disclosure provides a method for recovering a virtual machine, including:

The computing node searches for the first computing node corresponding to the virtual machine and the first operating state in the corresponding relationship between the virtual machine, the computing node, and the operating state during the re-powering process after the fault occurs; determining the first found The computing node is itself, and the first operating state that is found is an empty state, and the first operating state corresponding to the virtual machine is changed to the power-on state;

The computing node searches for the second computing node and the second operating state corresponding to the virtual machine in the corresponding relationship, and determines that the found second computing node is the self, and the found second operating state is the power-on state. Start the virtual machine.

Optionally, when the computing node determines that the second computing node is not itself, the method further includes:

The computing node changes a second operational state corresponding to the virtual machine to an empty state.

Optionally, the corresponding relationship further includes a virtual machine state, where the first computing node and the first operating state corresponding to the locating virtual machine include:

The computing node searches for the first computing node and the first operating node corresponding to the virtual machine whose virtual machine state is in the running state in the corresponding relationship.

Yet another embodiment of the present disclosure provides a control node, including at least:

The detecting module is configured to detect that the virtual machine needs to be reborn in another place;

The first search module is configured to: in a correspondence between the virtual machine, the computing node, and the operation state, search for a first operation state corresponding to the virtual machine that satisfies the remote regeneration condition; receive the first notification message, and search in the corresponding relationship a second operational state corresponding to the virtual machine that satisfies the remote regeneration condition;

The first change module is configured to determine that the first operation state is an empty state, and change a computing node corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship to the target computing node, and send a first notification message to the searching module; The second operation state is an empty state, and the second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship is changed to the virtual machine being reconstructed, and the message for re-origination is sent to the destination computing node.

Optionally, the first search module is configured to:

The first operation state corresponding to the virtual machine that satisfies the remote regenerative condition is found in the correspondence between the virtual machine, the computing node, and the operating state, and the first notification message is received in the corresponding relationship. Find a second operational state corresponding to the virtual machine that satisfies the alienation condition.

Optionally, the first change module is further configured to:

Determining that the second operation state is a non-empty state, and changing the computing node corresponding to the virtual machine that satisfies the alienation condition to the computing node before the change.

Optionally, the corresponding relationship further includes a virtual machine state, and the detecting module is configured to:

The computing node is powered off, and the virtual machine and the virtual machine state corresponding to the powered off computing node are searched in the corresponding relationship, and the found virtual machine state is determined to be in an operating state, and it is determined that the discovered virtual machine needs to be offsite. Rebirth.

Yet another embodiment of the present disclosure provides a computing node, including:

The second search module is configured to: in the corresponding relationship between the virtual machine, the computing node, and the operating state, search for the first computing node corresponding to the virtual machine and the first operating state; a second notification message, where the second computing node corresponding to the virtual machine and the second operating state are searched in the corresponding relationship;

The second change module is configured to determine that the first calculated node is the self, and the first operation state that is found is an empty state, and the first operation state corresponding to the virtual machine is changed to the power-on state, and the second search is performed. The module sends a second notification message, determines that the found second computing node is itself, and finds that the second operating state is the power-on state, and starts the virtual machine.

Optionally, the second change module is further configured to:

It is determined that the second computing node is not itself, and the second operating state corresponding to the virtual machine is changed to an empty state.

Yet another embodiment of the present disclosure provides a non-transitory storage medium storing computer executable instructions arranged to perform the method of restoring a virtual machine as described above.

Yet another embodiment of the present disclosure provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions when the program instructions are When the computer executes, causing the computer to perform the above-mentioned recovery virtual The method of the machine.

Yet another embodiment of the present disclosure provides an electronic device including at least one processor and a memory communicatively coupled to the at least one processor, the memory for storing instructions executable by the at least one processor, The instructions, when executed by the at least one processor, cause the at least one processor to perform the method of restoring a virtual machine as described above.

A virtual machine that satisfies the regenerative condition of the remote meeting satisfies the condition of the regenerative condition of the virtual machine that satisfies the condition of the regenerative condition of the virtual machine that satisfies the condition of the regenerative condition of the virtual machine that satisfies the condition of the regenerative condition of the virtual machine that satisfies the condition of the regenerative condition of the regenerative virtual machine. The method and the device prevent the faulty computing node from modifying the operating state of the virtual machine satisfying the regenerative condition in the process of modifying the computing node corresponding to the virtual machine satisfying the regenerative condition, thereby reducing two different computing nodes A conflict caused by a recovery operation on the same virtual machine.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a flow chart of a method for restoring a virtual machine according to the present disclosure;

2 is a flowchart of another method for restoring a virtual machine according to the present disclosure;

3 is a schematic structural diagram of a control node of the present disclosure;

4 is a schematic structural diagram of a computing node of the present disclosure;

FIG. 5 is a structural block diagram of an electronic device according to an embodiment of the present disclosure.

detailed description

The embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, and the features of the following embodiments and embodiments may be combined with each other without conflict.

Related art methods for recovering virtual machines generally include:

After the computing node fails, the control node receives the request for re-occurrence from the computing node where the user is located, and determines that the condition for re-occurrence is satisfied (for example, whether the user has the right to initiate the re-origination, and whether the virtual machine satisfies the condition of re-occurrence Etc., in the correspondence between the virtual machine, the computing node, and the operational state, look up the operation state corresponding to the virtual machine that needs to be regenerated in the request for re-occurrence, and when the found operation state is empty, The operation state in the correspondence between the regenerated virtual machine, the computing node, and the operation state is changed to the virtual machine being rebuilt, and the message for re-origination is sent to the destination computing node; wherein the message for re-occurrence includes the need to perform The information required for the rebirth of the reborn virtual machine; the destination computing node regenerates the virtual machine according to the information needed to regenerate the message in the regenerated message, and will regenerate between the virtual machine, the computing node, and the operational state. The compute node in the corresponding relationship is changed to the destination Node.

In the method for recovering a virtual machine in the related art, in the process of regenerating a virtual machine, when the failed computing node is powered off due to a non-computing node such as a power source, the environment may be restored or human intervention may occur after a period of time. In the process of power-on, the computing node searches for the virtual machine in the corresponding state between the virtual machine, the computing node, the virtual machine state, and the operating state, and the virtual machine state is the virtual machine corresponding to the running state. And the operation state, the operation state corresponding to the virtual machine whose operation state is found to be empty is changed to the power-on state, and the virtual machine whose found operation state is empty is started, and thus the failure occurs. The compute node and the destination compute node are configured with the same VM at the same time, causing conflicts between a series of resources and processes such as the Internet Protocol (IP) address, and may even cause the VM service to fail.

Referring to FIG. 1, the present disclosure proposes a method for restoring a virtual machine, including:

Step 100: The control node detects that the virtual machine needs to be regenerated in another place. In the corresponding relationship between the virtual machine, the computing node, and the operating state, the first operating state corresponding to the virtual machine that satisfies the remote regenerative condition is searched; The first operational state is an empty state, and the computing node corresponding to the virtual machine that satisfies the remote regenerative condition in the corresponding relationship is changed to the target computing node.

In this step, the control node can periodically detect whether the virtual machine needs to be regenerated in another place.

In this step, the corresponding relationship also includes a virtual machine state, and the control node detects that the virtual machine needs to be regenerated locally:

The control node detects that the computing node is powered off, finds the virtual machine and virtual machine state corresponding to the powered-off computing node in the corresponding relationship, determines that the found virtual machine state is in the running state, and determines that the discovered virtual machine needs to be off-site. Rebirth.

In this step, after the control node detects that the virtual machine needs to be regenerated in another place, before the first operation state corresponding to the virtual machine that satisfies the remote regenerative condition, the control node further includes:

The control node determines that the condition for re-emergence is satisfied.

In this step, the correspondence relationship may be saved by the control node itself, or may be stored in a computing node of a dedicated user in the system to store data. The control node can obtain a correspondence from the computing node.

In this step, the target computing node may be input by the user or may be allocated by the control node.

In this step, when the control node determines that the first operation state found is not empty, the process ends.

Step 101: The control node searches for a second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship, and determines that the found second operation state is an empty state, and corresponds to the virtual machine that satisfies the remote regenerative condition in the corresponding relationship. The second operational state is changed to re-establish the virtual machine and send a message to the destination computing node for re-emergence.

In this step, when the control node determines that the second operation state is a non-empty state, the control node changes the computing node corresponding to the virtual machine that satisfies the off-site re-generation condition to the computing node before the change. That is, if the second operational state is a non-empty state (eg, a virtual machine is being created, etc.), the computing node corresponding to the virtual machine that satisfies the off-site re-generation condition is changed to the computing node before the change in step 100, that is, the difference is not satisfied. The virtual machine with the reborn condition is reborn in another place.

In step 100 and step 101, the first operating state and the second operating state are only for distinguishing the operating states of the virtual machines found at different times, and the first operating states and the second operating states may be the same or different.

Through the method of the present disclosure, the control node first determines whether the operation state of the virtual machine that satisfies the remote regenerative condition is empty before and after modifying the computing node corresponding to the virtual machine that satisfies the remote regenerative condition, and if it is all empty, the remote reborn The computing node that avoids the failure is modified to modify the operation state of the virtual machine satisfying the regenerative condition in the process of modifying the computing node corresponding to the virtual machine that satisfies the remote regenerative condition, thereby reducing the difference between the two different computing nodes. The conflict caused by the recovery operation of the virtual machine.

Referring to FIG. 2, the present disclosure also provides a method for restoring a virtual machine, including:

Step 200: The computing node searches for the first computing node corresponding to the virtual machine and the first operating state in the corresponding relationship between the virtual machine, the computing node, and the operating state during the re-powering process after the fault occurs; The first computing node is itself, and the first operating state that is found is an empty state, and the first operating state corresponding to the virtual machine is changed to the powered state.

In this step, before the computing node searches for the first computing node corresponding to the virtual machine and the first operating state in the corresponding relationship, the computing node may first search for the corresponding virtual machine in the corresponding relationship, and then determine whether to start the found virtual machine before determining whether to start the discovered virtual machine. The step of searching for the first computing node corresponding to the found virtual machine and the first operating state is performed first.

It is also possible to traverse all the virtual machines in the system, and to find the first computing node and the first operating state corresponding to the virtual machines in the system, which is not limited in this disclosure.

In this step, when the first computing node found is not itself, the process ends.

In this step, the corresponding relationship further includes a virtual machine state, and the first computing node corresponding to the virtual machine and the first operating state include: the computing node searches for the first computing node corresponding to the virtual machine whose virtual machine state is in the running state in the corresponding relationship. And the first operating node.

Step 201: The computing node searches for the second computing node corresponding to the virtual machine and the second operating state in the corresponding relationship, determines that the found second computing node is itself, and the found second operating state is the power-on state, and starts. virtual machine.

In this step, when the computing node determines that the second computing node is not itself, the computing node changes the second operating state corresponding to the virtual machine to an empty state.

In step 200 and step 201, the first computing node and the second computing node are only used to distinguish the computing nodes corresponding to the virtual machines found at different times, and the first computing node and the second computing node may be the same or different; The operational state and the second operational state are merely for distinguishing the operational states of the virtual machines found at different times, and the first operational states and the second operational states may be the same or different.

Through the method of the present disclosure, the computing node determines whether the computing node corresponding to the virtual machine is itself before and after modifying the operating state of the virtual machine. If both are themselves, the virtual machine is started, and the control node is prevented from modifying the virtual machine corresponding to the computing node. During the operation state, the computing node corresponding to the virtual machine is modified, thereby reducing the conflict caused by the recovery operations of the same virtual machine by two different computing nodes.

The method of the present disclosure is described in detail below by several embodiments.

In the first embodiment, after a certain computing node fails, the control node detects that the virtual machine needs to be regenerated in another place, determines that the condition of re-occupation is satisfied, and searches for the correspondence between the virtual machine, the computing node, and the operating state. The first operational state corresponding to the virtual machine satisfying the regenerative condition of the different place; The first operation state that is found to be interrupted is an empty state, and the computing node corresponding to the virtual machine that satisfies the remote regenerative condition in the corresponding relationship is changed to the target computing node.

During the re-power-on of the failed computing node, the first computing node corresponding to the virtual machine that satisfies the re-emergence condition and the first operating state are searched in the corresponding relationship, and it is determined that the first computing node that is found is the target computing node instead of By itself, the process of starting a virtual machine that satisfies the conditions for re-generation of the alienation is started.

The control node searches for a second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship, and determines that the found second operation state is an empty state, and the second operation corresponding to the virtual machine that satisfies the remote regeneration condition in the correspondence relationship The status changes to the virtual machine being rebuilt and a message is sent to the destination compute node for re-emergence.

In the second embodiment, after a certain computing node fails, the control node detects that the virtual machine needs to be regenerated in another place, determines that the condition of re-occupation is satisfied, and searches for the correspondence between the virtual machine, the computing node, and the operating state. The first operational state corresponding to the virtual machine that satisfies the re-emergence condition.

During the re-powering of the failed computing node, the first computing node corresponding to the virtual machine that satisfies the remote regenerative condition and the first operating state are searched for in the corresponding relationship.

The control node determines that the first operational state that is found is an empty state, and changes the computing node corresponding to the virtual machine that satisfies the remote regenerative condition in the corresponding relationship to the target computing node. The faulty computing node determines that the first computing node that is found is itself, and the first operating state that is found is empty, and changes the first operating state corresponding to the virtual machine to the power-on state.

The control node searches for a second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the correspondence, determines that the found second operation state is a non-empty state, and ends the process of re-occurrence.

The faulty computing node searches for the second computing node and the second operating state corresponding to the virtual machine in the corresponding relationship, determines that the found second computing node is not itself, and ends the process of starting the virtual machine that satisfies the remote regenerative condition.

In the third embodiment, after a fault occurs in a computing node, in the process of re-powering, in the corresponding relationship between the virtual machine, the computing node, and the operating state, the first computing node corresponding to the virtual machine and the first operation are searched. The state determines that the first computing node that is found is itself, and the first operating state that is found is in an empty state, and changes the first operating state corresponding to the virtual machine to the power-on state.

The control node detects that the virtual machine needs to be regenerated in another place, determines that the condition of re-occupation is satisfied, searches for the first operation state corresponding to the virtual machine in the corresponding relationship, and determines that the first operation state that is found is non-empty, and ends. The process of rebirth in different places.

The computing node searches for the second computing node and the second operating state corresponding to the virtual machine in the corresponding relationship, determines that the found second computing node is itself, and finds that the second operating state is the power-on state, and starts the virtual machine.

Referring to FIG. 3, the present disclosure also proposes a control node, including:

The first searching module is configured to determine that the condition for re-occupation of the remote location is satisfied, and in the correspondence between the virtual machine, the computing node, and the operating state, searching for a first operating state corresponding to the virtual machine that satisfies the re-emergence condition; receiving the first a notification message, in the corresponding relationship, searching for a second operation state corresponding to the virtual machine that satisfies the remote regenerative condition;

a first change module, configured to determine that the first operation state that is found is an empty state, and change a computing node corresponding to the virtual machine that satisfies the remote regenerative condition in the corresponding relationship to the target computing node, and send a first notification message to the searching module; It is determined that the found second operation state is an empty state, and the second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship is changed to the virtual machine being reconstructed, and the message for re-origination is sent to the destination computing node.

In the control node of the present disclosure, the first lookup module is set to:

Judging the correspondence between the virtual machine, the computing node, and the operating state In the relationship, the first operation state corresponding to the virtual machine satisfying the regenerative condition is searched; the first notification message is received, and the second operation state corresponding to the virtual machine that satisfies the remote regenerative condition is searched for in the corresponding relationship.

In the control node of the present disclosure, the first change module is further configured to:

It is determined that the second operation state is a non-empty state, and the computing node corresponding to the virtual machine that satisfies the remote regeneration condition is changed to the computing node before the change.

In the control node of the present disclosure, the corresponding relationship further includes a virtual machine state, and the detection module is configured to:

The computing node is powered off, and the virtual machine and the virtual machine state corresponding to the powered-off computing node are searched for in the corresponding relationship, and the found virtual machine state is determined to be in an operating state, and it is determined that the discovered virtual machine needs to be regenerated in another place.

Referring to FIG. 4, the present disclosure also proposes a computing node, including:

Optionally, the second change module is further configured to:

The present disclosure also provides a non-transitory storage medium storing computer executable instructions arranged to perform the method of restoring a virtual machine of the above-described embodiments.

The present disclosure also provides a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by a computer, The computer is caused to execute the method of restoring a virtual machine of the above embodiment.

The present disclosure also provides an electronic device. FIG. 5 is a structural block diagram of an electronic device according to an embodiment of the present disclosure. The electronic device may include a processor 51 and a memory 53, and may further include a communication interface 52 and a bus 54. The processor 51, the communication interface 52, and the memory 53 can complete communication with each other through the bus 54. Communication interface 52 can be used for information transmission. The processor 51 can call the logic instructions in the memory 53 to perform the method of restoring the virtual machine of the above embodiment.

In addition, the logic instructions in the memory 53 described above may be implemented in the form of a software functional unit and sold or used as a stand-alone product, and may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network) The device or the like) performs all or part of the steps of the method described in various embodiments of the present disclosure. The foregoing storage medium may be a non-transitory storage medium, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk. A medium that can store program code, or a transitory storage medium.

Industrial applicability

According to the method and apparatus for restoring a virtual machine according to the present invention, it is avoided that the failed computing node is modified in the process of modifying the computing node corresponding to the virtual machine satisfying the remote regenerative condition by the control node. The operating state of the virtual machine that regenerates the condition, thereby reducing the conflict caused by the recovery operations of the same virtual machine by two different computing nodes.

Claims

A method of restoring a virtual machine, including:

The control node detects a virtual machine that satisfies the condition of re-occurrence, and searches for a first operation state corresponding to the virtual machine that satisfies the remote re-generation condition in the corresponding relationship between the virtual machine, the computing node, and the operation state; and determines that the first operation state is An empty state, changing a computing node corresponding to the virtual machine that satisfies the regenerative condition in the corresponding relationship to the target computing node;

The control node searches for a second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship, determines that the second operation state is an empty state, and changes the second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship to The virtual machine is being rebuilt and a message to regenerate the alien is sent to the destination compute node.
The method of claim 1, wherein the control node further includes: after the detecting, by the control node, the virtual machine that satisfies the remote regeneration condition, before the first operation state corresponding to the virtual machine that satisfies the remote regeneration condition:

The control node determines that the condition for re-emergence is satisfied.
The method of claim 1, wherein when the control node determines that the second operational state is a non-empty state, the method further comprises:

The control node changes the computing node corresponding to the virtual machine that satisfies the off-site regeneration condition to the computing node before the change.
The method according to claim 1, wherein the correspondence further includes a virtual machine state, and the control node detects that the virtual machine that satisfies the re-emergence condition includes:

The control node detects that the computing node is powered off, finds the virtual machine and the virtual machine state corresponding to the powered-down computing node in the corresponding relationship, determines that the virtual machine state is in the running state, and determines that the found virtual machine needs to be satisfied. Rebirth conditions in different places.
A method of restoring a virtual machine, including:

The computing node searches for the first computing node corresponding to the virtual machine and the first operating state in the corresponding relationship between the virtual machine, the computing node, and the operating state, and determines that the first computing node is Self, and the first operational state is an empty state, changing the first operational state to a powered state;

The computing node searches for the second computing node and the second operating state corresponding to the virtual machine in the corresponding relationship, determines that the second computing node is the self, and the second operating state is the power-on state, and starts the virtual machine.
The method of claim 5, wherein when the computing node determines that the second computing node is not itself, the method further comprises:

The computing node changes the second operational state to an empty state.
The method according to claim 5 or 6, wherein the correspondence further includes a virtual machine state, and the first computing node and the first operating state corresponding to the locating virtual machine include:

The computing node searches for the first computing node and the first operating node corresponding to the virtual machine whose virtual machine state is in the running state in the corresponding relationship.
A control node comprising:

a detection module configured to detect a virtual machine that satisfies an off-site regeneration condition;

The first search module is configured to: in a correspondence between the virtual machine, the computing node, and the operation state, search for a first operation state corresponding to the virtual machine that satisfies the remote regeneration condition; receive the first notification message, and search in the corresponding relationship a second operational state corresponding to the virtual machine that satisfies the remote regeneration condition;

The first change module is configured to determine that the first operation state is an empty state, and change a computing node corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship to the target computing node, and send a first notification message to the searching module; The second operation state is an empty state, and the second operation state corresponding to the virtual machine that satisfies the remote regeneration condition in the corresponding relationship is changed to the virtual machine being reconstructed, and the message for re-origination is sent to the destination computing node.
The control node according to claim 8, wherein the first lookup module is configured to:

The first operation state corresponding to the virtual machine that satisfies the remote regenerative condition is found in the correspondence between the virtual machine, the computing node, and the operating state, and the first notification message is received in the corresponding relationship. Find a second operational state corresponding to the virtual machine that satisfies the alienation condition.
The control node according to claim 8, wherein the first change module is further configured to:

Determining that the second operation state is a non-empty state, and changing the computing node corresponding to the virtual machine that satisfies the alienation condition to the computing node before the change.
The control node according to claim 8, wherein the correspondence further includes a virtual machine state, and the detecting module is configured to:

The computing node is powered off, and the virtual machine and the virtual machine state corresponding to the powered off computing node are searched in the corresponding relationship, and the found virtual machine state is determined to be in an operating state, and it is determined that the discovered virtual machine needs to be offsite. Rebirth.
A computing node that includes:

The second searching module searches for a first computing node corresponding to the virtual machine and the first operating state in the corresponding relationship between the virtual machine, the computing node, and the operating state during the re-powering process after the failure occurs; and receives the second operation state; a notification message, in the correspondence relationship, searching for a second computing node corresponding to the virtual machine and a second operation state;

The second change module is configured to determine that the first calculated node is the self, and the first operation state that is found is an empty state, and the first operation state corresponding to the virtual machine is changed to the power-on state, and the second search is performed. The module sends a second notification message, determines that the found second computing node is itself, and finds that the second operating state is the power-on state, and starts the virtual machine.
The computing node of claim 12 wherein said second change module is further configured to:

Determining that the second computing node is not itself, and the second operating state corresponding to the virtual machine is further Change to empty state.
A non-transitory storage medium storing computer executable instructions, the computer executable instructions being arranged to perform the method of recovering a virtual machine of any of claims 1-7.
A computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to execute A method of recovering a virtual machine as claimed in any of claims 1-7.
An electronic device comprising at least one processor and a memory communicatively coupled to the at least one processor, the memory for storing instructions executable by the at least one processor, the instructions being processed by the at least one When executed, the at least one processor is caused to perform the method of recovering a virtual machine according to any one of claims 1-7.