CN103891243B - Method and device for realizing virtual machine migration - Google Patents

Abstract

The embodiment of the invention provides a method and a device for realizing virtual machine migration, wherein the method comprises the following steps: after receiving the information of the virtual machine group sent by the application management server, finding the deployment position information of all the virtual machines of the virtual machine group according to the information, determining a destination physical machine set which can accommodate all the virtual machines in the virtual machine group and enables the communication response time between the virtual machines to be shorter than the current communication time, and then migrating the virtual machines which are not operated in the virtual machine group and belong to the destination physical machine set to the set. By using the method and the device, the virtual machines of the virtual machine group are migrated to the physical machine set with the minimum number of physical machines on the premise of the minimum number of subnets, so that the communication data of the virtual machines in the virtual machine group are quickly exchanged, and the application user experience is effectively improved.

Description

Method and device for realizing virtual machine migration

technical field

The present invention relates to the technical field of communication networks, in particular to a method and a corresponding device for realizing virtual machine migration.

Background technique

There are two modes of cloud computing: narrow cloud computing IaaS (Infrastructure as a Service) and generalized cloud computing SaaS (Software as a Service), in which the service provided by IaaS to users is the utilization of all infrastructure, including processing, storage, network And other basic computing resources, the service provided by SaaS to users is the application program that the operator runs on the infrastructure.

Most IaaS platforms provide virtual computing resources by providing virtual machines. SaaS providers can serve as users of the IaaS platform, deploy applications on the IaaS platform, and then provide services to application users. When the IaaS platform is built based on virtual machines, the virtual resources provided by the IaaS platform to the SaaS provider are virtual machines customized according to the requirements of the SaaS provider. The actual running location of the virtual machine is transparent to the SaaS provider. The IaaS provider is responsible for the maintenance, fault repair, security monitoring and billing of virtual machine hardware and corresponding software (such as virtualization software, guest operating system, etc.), while the SaaS provider is responsible for providing application services to users. Usually, when a terminal accesses an application provided by SaaS, such as starting an online game, SaaS requests the IaaS platform to allocate a virtual machine for the terminal, and the virtual machine is only used for the application of the terminal.

A collaborative group application refers to an application in which multiple terminals participate in and cooperate with each other after obtaining computing resources in the network. Examples of such applications include online games, file sharing, and video conferencing. The multiple terminals participating in the cooperative group application form a cooperative group.

In the prior art, when the software application provided by the SaaS provider is a collaborative group application, if the SaaS platform is built on a virtual machine, the collaborative group application is specifically assigned to the terminals that form the collaborative group application. A set of virtual machines is complete. Wherein, this group of virtual machines constitutes a virtual machine group. The virtual machines in the virtual machine group may run on different subnets or different physical machines, and there will be a lot of communication between them, and the time required for cross-subnet communication is much longer than that required for communication within the same subnet; Even the communication between different physical machines in the same subnet is longer than the time required for communication within the same physical machine. Therefore, the prior art has the defect that the application response time is relatively long, resulting in poor application experience for users.

Contents of the invention

Embodiments of the present invention provide a method and device for implementing virtual machine migration, which are used to increase the speed of data communication between virtual machines in a virtual machine group that completes collaborative group applications, thereby reducing application response time and greatly improving user experience.

In the first aspect, the method for implementing virtual machine migration provided by the embodiment of the present invention includes:

Receive the information of the virtual machine group sent by the application management server. The virtual machine group includes multiple virtual machines that complete the specified collaborative group application. The information of the virtual machine group includes the information of each virtual machine in the virtual machine group. unique identifier of

According to the information of the virtual machine group, find the deployment location information of each virtual machine in the virtual machine group. The deployment location information of the virtual machine includes the unique identifier of the subnet to which the virtual machine belongs and the physical machine on which it runs unique identifier of

According to the deployment location information of the virtual machine, determine a set of target physical machines that can accommodate the virtual machine group and whose communication response time between virtual machines in the virtual machine group is shorter than the current communication response time after the accommodation;

Judging whether the physical machine on which each virtual machine in the virtual machine group runs belongs to the determined target physical machine set, and when the physical machine on which the virtual machine runs does not belong to the target physical machine set, the virtual machine The machine is migrated to the target physical machine set.

In a first possible implementation manner of the first aspect, a virtual machine group that can accommodate the virtual machine group and that has a shorter communication response time between virtual machines in the virtual machine group than the current communication response time is determined. The method for collecting the target physical machines includes: when all the virtual machines in the virtual machine group are in different physical machines in the same subnet, determine the virtual machine group in the subnet that can accommodate the virtual machine group and contains the least number of physical machines Physical machine collection; select one of the physical machine collections as the target physical machine collection.

In the second possible implementation manner of the first aspect, determine a virtual machine group that can accommodate the virtual machine group, and after the accommodation, the communication response time between the virtual machines in the virtual machine group is shorter than the current communication response time The method for the target physical machine collection includes: when all the virtual machines in the virtual machine group are in different physical machines in different subnets, determine the one that can accommodate the virtual machine group and contains the least number of subnets among all the subnets A subnet set; determine a physical machine set in the subnet set that can accommodate the virtual machine group and contains the least number of physical machines; select one of the physical machine sets as the target physical machine set.

In a third possible implementation of the first aspect, migrating the virtual machine to the target physical machine set further includes: if the migration is cross-subnet migration, sending the migration of the virtual machine to the application management server IP address.

With reference to the first possible implementation of the first aspect, in a fourth possible implementation, selecting one of the physical machine sets as the target physical machine set specifically includes: if the determined physical machine set has multiple , select a physical machine set that requires the least number of virtual machine migrations in the virtual machine group as the target physical machine set.

With reference to the second possible implementation of the first aspect, in a fifth possible implementation, selecting one of the physical machine sets as the target physical machine set includes: if there are multiple physical machine sets determined, A physical machine set requiring the least number of virtual machine migrations in the virtual machine group is selected as the target physical machine set.

In the second aspect, the resource management server provided by the embodiment of the present invention includes:

The interface unit is used to receive the information of the virtual machine group sent by the application management server, the virtual machine group includes multiple virtual machines that complete the specified collaborative group application, and the information of the virtual machine group includes the virtual machine group A unique identifier for each virtual machine in the ;

The search unit is configured to search for the deployment location information of each virtual machine in the virtual machine group according to the information of the virtual machine group received by the interface unit, and the deployment location information of the virtual machine includes the information of the subnet to which the virtual machine belongs. The unique identifier and the unique identifier of the physical machine on which it runs;

The determining unit is configured to determine, according to the deployment location information of the virtual machine found by the searching unit, that the virtual machine group can be accommodated, and that after the accommodation, the communication response time between the virtual machines in the virtual machine group is faster than the current communication response time A short set of destination physical machines;

A judging unit, configured to judge whether the physical machine on which each virtual machine in the virtual machine group runs belongs to the determined target physical machine set;

The migration unit is configured to migrate the virtual machine to the target physical machine set when the physical machine on which the virtual machine runs does not belong to the target physical machine set.

In a first possible implementation manner of the second aspect, the determining unit includes:

The first determination module is used to determine the physical machine that can accommodate the virtual machine group and contains the least number of physical machines in the subnet when all the virtual machines in the virtual machine group are on different physical machines in the same subnet. machine collection;

A first selecting module, configured to select one of the physical machine sets determined by the first determining module as the target physical machine set.

In a second possible implementation manner of the second aspect, the determining unit includes:

The second determination module is used to determine the subnet that can accommodate the virtual machine group and contains the least number of subnets in all subnets when all the virtual machines in the virtual machine group are on different physical machines in different subnets net collection;

The third determination module: used to determine, among the subnet sets determined by the second determination module, a physical machine set capable of accommodating the virtual machine group and containing the least number of physical machines;

The second selecting module is configured to select one of the physical machine sets determined by the third determining module as the target physical machine set.

In a third possible implementation manner of the second aspect, the interface unit is further configured to send the migrated IP address of the virtual machine to the application management server after the migration unit performs cross-subnet migration of the virtual machine.

With reference to the first possible implementation of the second aspect, in a fourth possible implementation, the first selection module is further configured to, when there are multiple sets of physical machines determined by the first determination module, select A physical machine set with the least number of virtual machine migrations in the virtual machine group is required to be the target physical machine set. With reference to the second possible implementation of the second aspect, in the fifth possible implementation, the second selection module is further configured to select the required A set of physical machines with the least number of virtual machine migrations in the virtual machine group is the set of target physical machines.

It can be seen from the above technical solutions that by deploying the virtual machines in the virtual machine group that provides collaborative group applications on the physical machine set that includes the least number of subnets and the least number of physical machines, the realization of virtual machine The virtual machine communication data in the group is exchanged quickly, so as to achieve the purpose of improving the user experience of the application.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flowchart of a method for implementing virtual machine migration provided by an embodiment of the present invention;

Fig. 2 is a method embodiment of the method shown in Fig. 1 for determining a target physical machine set that can accommodate a virtual machine group and make the communication response time between virtual machines in the virtual machine group shorter than the current communication response time flow chart;

FIG. 3 is a flow chart of a method embodiment of the method shown in FIG. 1 for migrating a virtual machine whose physical machine in the virtual machine group does not belong to the target physical machine set to the target physical machine set;

Fig. 4 is a sequence diagram of multiple users playing a group game provided by an embodiment of the present invention;

FIG. 5 is a structural diagram of a resource management server for implementing virtual machine migration provided by an embodiment of the present invention;

FIG. 6 is a structural diagram of a resource management server for implementing virtual machine migration provided by another embodiment of the present invention;

FIG. 7 is a structural diagram of a resource management server for implementing virtual machine migration provided by another embodiment of the present invention;

FIG. 8 is a structural diagram of a resource management server based on a computer system provided by another embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Described from the perspective of a resource management server, an embodiment of the present invention provides a method for implementing virtual machine migration, the process of which is shown in Figure 1:

101. Receive the information of the virtual machine group sent by the application management server, the virtual machine group includes multiple virtual machines that complete the specified collaborative group application, and the information of the virtual machine group includes the information of each virtual machine in the virtual machine group A unique identifier for the virtual machine.

Specifically, the unique identifier of the virtual machine may be a current IP address or an identifier ID of the virtual machine.

102. According to the received information of the virtual machine group, search for the deployment location information of each virtual machine in the virtual machine group, where the deployment location information includes the unique identifier of the subnet to which the virtual machine belongs and the virtual machine running The unique identifier of the physical machine.

103. According to the found deployment position information of the virtual machine, determine a virtual machine group that can accommodate the virtual machine group, and after the accommodation, the communication response time between the virtual machines in the virtual machine group is shorter than the current communication response time A collection of target physical machines.

Wherein, this step specifically includes: when the virtual machines in the virtual machine group run on different physical machines in the same subnet, determine the virtual machine group in the subnet that can accommodate the virtual machine group and contains the least number of physical machines collection of physical machines. If there is only one physical machine set determined, use this physical machine set as the target physical machine set; if there are multiple determined physical machine sets, the calculation will migrate the virtual machines in the virtual machine group to each determined The number of times the physical machine set needs to be migrated, select a physical machine set that requires the least number of virtual machine migrations in the virtual machine group as the target physical machine set;

When the virtual machines in the virtual machine group run on different physical machines in different subnets, a subnet set that can accommodate the virtual machine group and includes the least number of subnets is determined in the different subnets. A physical machine set capable of accommodating the virtual machine group and containing the least number of physical machines is determined in the determined subnet set. If there is only one physical machine set determined, use this physical machine set as the target physical machine set; if there are multiple determined physical machine sets, the calculation will migrate the virtual machines in the virtual machine group to each determined The number of times the physical machine set needs to be migrated, and a physical machine set that requires the least number of virtual machine migrations in the virtual machine group is selected as the target physical machine set.

104. Determine whether the physical machine on which each virtual machine in the virtual machine group runs belongs to the determined target physical machine set, and when the physical machine on which the virtual machine runs does not belong to the target physical machine set, migrate the virtual machine to the destination physical machine collection.

Wherein, this step may further include: if the migration is cross-subnet migration, sending the migrated IP address of the virtual machine to the application management server.

Another embodiment of the present invention provides that in the above-mentioned embodiment, according to the deployment position information of the found virtual machine, it is determined that the virtual machine group can be accommodated, and the communication response between the virtual machines in the virtual machine group is determined. The method of a target physical machine set whose time is shorter than the current communication response time, the specific process is shown in Figure 2:

201. Determine whether all the virtual machines in the virtual machine group run on the same physical machine, if yes, go to step 202; if not, go to step 203.

202. There is no target physical machine set that can accommodate the virtual machine group, and the communication response time between the virtual machines in the accommodated virtual machine group is shorter than the current communication response time, and the process ends.

203. Calculate the sum of resources required by all the virtual machines in the virtual machine group.

204 . Determine whether the physical machines on which the virtual machines in the virtual machine group run belong to the same subnet, if yes, go to step 205 , if not, go to step 210 .

205. Let the initial value of the natural number variable k be 1.

206. Determine whether there is a physical machine set in the subnet that can accommodate all the virtual machines in the group at the same time, that is, the sum of the resources allocated to the above-mentioned virtual machine group and the remaining free resources in the physical machine set is greater than Or equal to the sum of resources calculated in step 203, and the number of physical machines included in the physical machine set is k. If yes, go to step 208, otherwise go to step 207.

207. Add 1 to the value of the variable k, and go to step 206.

208 . Record the determined one or more sets of physical machines as a set of candidate target physical machines, and calculate the migration times required by the virtual machines in the virtual machine group for each set of candidate target physical machines. Specifically, the calculation method for the set of physical machines for each candidate purpose can be as follows: for each virtual machine in the virtual machine group, determine which physical machine it is running on, and determine once for each virtual machine which virtual machine it is running on. Whether the physical machine belongs to the candidate target physical machine set, and the number of judgments that do not belong to the candidate target physical machine set is accumulated, and the judgment number is the number of migrations.

209. Select the candidate target physical machine set with the least number of migrations (that is, the smallest migration cost) as the target physical machine set, and if there are multiple candidate target physical machine sets with the least number of migrations, select one of them as the target physical machine set.

210. Let the initial value of the natural number variable k be 1.

211. Find whether there is a subnet set in the different subnets that can accommodate all the virtual machines in the group at the same time, that is, the difference between the resources allocated to the virtual machines in the virtual machine group and the remaining idle resources in the subnet set The sum is greater than or equal to the sum of resources calculated in step 203, and this set includes k subnets. If yes, go to step 213, otherwise go to step 212.

212. Add 1 to the variable k, and go to step 211.

213. Record one or more found subnet sets as a candidate subnet set, and set the initial value of the natural number variable s to k, where k is the number of subnets included in the subnet set.

214. Find out whether there is a physical machine set that can accommodate all the virtual machines in the virtual machine group in all the found candidate subnet sets, that is, the resources that have been allocated to the virtual machines in the virtual machine group and the remaining resources in the physical machine set The sum of free resources is greater than or equal to the sum of resources calculated in step 203, and each physical machine set includes s physical machines. If yes, go to step 216, otherwise go to step 215.

215. Add 1 to the value of the variable s, and jump to step 214.

216. Record the found one or more sets of physical machines as a set of candidate target physical machines, and calculate the number of migrations required by the virtual machines in the virtual machine group for each set of candidate target physical machines. Specifically, the calculation method for the set of physical machines for each candidate purpose can be as follows: for each virtual machine in the group, determine which physical machine it is running on, and judge once for each virtual machine which virtual machine it is running on. Whether the physical machine belongs to the candidate target physical machine set, and the number of times of judging that it does not belong to the candidate target physical machine set is accumulated, and the judging times are the migration times.

217. Select the candidate target physical machine set with the least number of migrations (that is, the smallest migration cost) as the target physical machine set; if there are multiple candidate target physical machine sets with the least number of migrations, select one of them as the target physical machine set.

In the above-mentioned embodiment, on the premise of including the least number of subnets, the set of physical machines with the least number of physical machines is searched for. Therefore, after the virtual machine group is deployed to this set, the communication response time between the virtual machine groups will be slower than the current one. The communication response time between virtual machine groups is shorter in the deployment mode.

Yet another embodiment of the present invention provides a method for implementing virtual machine migration, after a target physical machine set is determined, the virtual machine on which the physical machine in the virtual machine group does not belong to the target physical machine set The process of migrating to the target physical machine set is shown in Figure 3:

301. Read the subnet to which the IP address of each physical machine in the target physical machine set belongs, and record the subnet set.

302. Divide all virtual machines in the virtual machine group into three types, type 1: the physical machine on which the virtual machine runs belongs to the target physical machine set; type 2: the physical machine on which the virtual machine runs does not belong to the target physical machine set The target physical machine set, but the subnet to which the physical machine belongs belongs to the subnet set; type 3: the physical machine on which the virtual machine runs does not belong to the target physical machine set, and the subnet to which the physical machine belongs does not belong to the subnet Web collection.

303. For each virtual machine of type 2, check in the target physical machine set whether there is a physical machine that belongs to the same subnet as the physical machine on which the virtual machine runs and has idle resources, and if so, migrate the virtual machine Otherwise, randomly migrate to any physical machine with free resources in the target physical machine set.

304. For each virtual machine of type 3, randomly migrate it to any physical machine with idle resources in the target physical machine set.

In the above embodiment, the virtual machine on which the physical machine does not belong to the target physical machine set is preferentially migrated to the physical machine on the same subnet as the physical machine on which the virtual machine is running, thus reducing cross-network segment Migration, and can minimize the system resources consumed by migration.

An embodiment of the present invention uses a sequence diagram to describe a method for implementing virtual machine migration. As shown in FIG. 4 , users user1, user2, and user3 are about to play a group game, and the specific implementation steps are described in detail as follows. Assume that before these three users play this group game, the application management server has assigned them virtual machines for providing game services. 1. The application management server requests the resource management server to allocate a virtual machine for him, or after the user joins a specific game, the application management server requests the resource management server to allocate a virtual machine for him. Only after the user exits the game platform, the system will cancel the virtual machine resources allocated to him:

S401, the user user1 accesses the game application on the virtual machine VM1 (its identifier is ID1, IP address is ip1) assigned to him through its terminal UE1, clicks the "new room" button, and VM1 will send a new game room to the application management server request. After receiving the request, the application management server initializes game room A, that is, creates a game group with group number A; and creates a virtual machine group with group number A, and connects virtual machine group A with game group A bound. Add VM1 to virtual machine group A, and record the information of virtual machine group A (including virtual machine group number A, identifier and IP address information of virtual machine VM1).

S402, the user user2 accesses the game application on the virtual machine VM2 (its identifier is ID2, IP address is ip2) assigned to him through its terminal UE2, sees the game room A, clicks the "Join" button; VM2 will add to the application management The server sends a request to join the group game, and the application management server adds VM2 to virtual machine group A, and refreshes the information of virtual machine group A (including group number A, identifiers and IP address information of virtual machines VM1 and VM2) , and establish a communication connection between the virtual machines VM1 and VM2.

S403, the user user3 accesses the game application on the virtual machine VM3 (its identifier is ID3 and IP address is ip3) through UE3, and joins the virtual machine group A, and the processing method is similar to step S402.

S404, the user user1 checks through his terminal that the current game room A satisfies the minimum number of players to start the game, clicks the "Start Game" button, VM1 sends a request to the application management server to start the application, and the request includes the group number A of the group game.

S405. After receiving the request sent by VM1, the application management server determines that this is a group game start request according to the included group number, and sends the information of the virtual machine group A bound to the game group A to the resource In the management server, the information of the virtual machine group A includes an array of identifiers VMID[]={ID1, ID2, ID3} of the virtual machines VM1, VM2 and VM3 in the virtual machine group A.

S406, the resource management server looks up the unique identifier of the subnet to which VM1, VM2 and VM3 belong and the unique identifier of the physical machine on which they run according to the identifier array VMID[]={ID1, ID2, ID3} of the virtual machines in the group.

S407, the resource management server determines a migration target physical machine set that can accommodate the three virtual machines VM1, VM2, and VM3, and make the communication response time between them shorter than the current one.

Generally, there are three different situations in the distribution of virtual machines in a virtual machine group as follows:

Case 1. All virtual machines in the virtual machine group run on the same physical machine; Case 2. The virtual machines in the virtual machine group run on different physical machines in the same subnet; Case 3. The virtual machines in the virtual machine group Running on different physical machines on different subnets.

Specifically, in this embodiment, for case 1, the deployment location information of the three virtual machines VM1, VM2, and VM3 obtained by the resource management server is: subnet array VMNS[]={subnet A, subnet A, subnet Network A} and physical machine number array MID[]={M1, M1, M1}. For case 2, the deployment location information of the three virtual machines obtained by the resource management server is: subnet array VMNS[]={subnet A, subnet A, subnet A} and physical machine number array MID[]={M1, M1, M2}. For case 3, the deployment location information of the three virtual machines obtained by the resource management server is: subnet array VMNS[]={subnet A, subnet A, subnet B} and physical machine number array MID[]={M1, M1, M3}.

Corresponding to these three situations, in step S407, the resource management server determines the migration target physical machine set that can accommodate the aforementioned VM1, VM2, and VM3, and allows them to communicate with each other with a shorter response time than the current one. The process is as follows:

For case 1. All virtual machines in the virtual machine group are already running on the same physical machine M1, and there is no target physical machine set that meets the conditions;

For case 2. After judging that the three virtual machines in the virtual machine group are running on different physical machines, the sum of the system resources required by the three virtual machines is calculated to be 3. It is further judged that these three virtual machines are running in the same subnet A, and the initial value of the natural number variable k is 1. After searching, it is known that the number of available resources of the physical machine M1 contained in the subnet A is 5 (including Resources already allocated to VM1 and VM2), the number of available resources of physical machine M2 is 6 (including the resources allocated to VM3), and it is determined that the physical machine sets {M1} and {M2} contain only one physical machine The available resources are both greater than 3, and the sets {M1} and {M2} are recorded as candidate destination physical machine sets.

For the candidate target physical machine set {M1}, the virtual machine VM1 runs on M1 and belongs to the set {M1}, the virtual machine VM2 runs on M1 and belongs to the set {M1}, and VM3 runs on M2 and does not belong to the set {M1}, so no The cumulative value of the number of times belonging to the set {M1} is 1, that is, the number of migrations is 1. In the same way, for the set of candidate destination physical machines {M2}, the calculated number of migrations is 2. In the candidate target physical machine set, select {M1} with the least number of migrations as the target physical machine set.

For case 3. After it is determined that the three virtual machines in the virtual machine group are running on different physical machines, the sum of the system resources required by the three virtual machines is calculated to be 3. It is further judged that these three virtual machines are running in different subnets A and B, and the initial value of the natural number variable k is 1. After searching, it is found that the number of available resources in subnet A is 11 (including those already allocated to VM1 and the resources of VM2), the number of available resources of subnet B is 6 (including the resources already allocated to VM3), and it is judged that the available resources of the subnet sets {A} and {B} containing only 1 subnet number are both If it is greater than 3, record the subnet sets {A} and {B} as candidate subnet sets.

Let the initial value of the natural number variable s be k (k=1, so the initial value of s is 1), and after searching, it is found that the number of available resources of the physical machine M1 contained in the subnet A is 5 (including the resources already allocated to resources of VM1 and VM2), the number of available resources of physical machine M2 is 6 (including resources already allocated to VM3), and the number of available resources of physical machine M3 contained in subnet B is 6 (including resources already allocated to VM3 resources), it is determined that the available resources of the physical machine sets {M1}, {M2}, and {M3} containing only one physical machine in the candidate subnet sets {A} and {B} are greater than 3, and the set { M1}, {M2}, and {M3} are recorded as a set of candidate destination physical machines.

For the candidate destination physical machine set {M1}, the virtual machine VM1 runs on M1 and belongs to the set {M1}, the virtual machine VM2 runs on M1 and belongs to the set {M1}, and VM3 runs on M3 and does not belong to the set {M1}, so no The accumulative value of the number of times belonging to the set {M1} is 1, that is, the number of migrations is 1. In the same way, for the set of candidate physical machines {M2}, the calculated number of migrations is 3. For the set of candidate physical machines {M3}, calculate The number of outgoing migrations is 2. In the candidate target physical machine set, select {M1} with the least number of migrations as the target physical machine set.

S408, the resource management server judges whether the physical machines on which the virtual machines VM1, VM2, and VM3 run in the virtual machine group belong to the target physical machine set calculated in S407, and the physical machines on which they run do not belong to the target physical machine set Virtual machine, use virtual machine live migration technology to migrate it to the target physical machine set, if the migration is cross-subnet migration, send a message to the application management server to notify the information of the virtual machine information after migration and the unique identification of the virtual machine .

According to the determination result for case 1 in step S407, there is no target physical machine set satisfying the condition, and migration is not needed.

According to the target physical machine set calculated for case 2 in step S407, in this step, the virtual machine that does not belong to the target physical machine set is migrated to the target physical machine set using virtual machine live migration technology. The specific process is as follows:

The target physical machine set {M1} includes the physical machine M1, and M1 belongs to subnet A, and the subnet set {A} is recorded. Classify the three virtual machines in the virtual machine group, where VM1 and VM2 belong to type 1, the physical machine M1 they run on belongs to the target physical machine set, and VM3 belongs to type 2, and the physical machine M2 they run on does not belong to the target A collection of physical machines, but the subnet A to which M2 belongs belongs to the subnet collection {A}. For VM3 belonging to type 2, it is found in the target physical machine set {M1} that M1 has idle resources and belongs to the same subnet as the physical machine M2 on which VM3 runs, and the resource management server sends hot Migrate command to migrate VM3 to M1, because the IP address of VM3 does not need to be changed because it migrates on the same subnet.

According to the physical machine set calculated for case 3 in step S407, in this step, the virtual machine that does not belong to the target physical machine set is migrated to the target physical machine set using virtual machine live migration technology. The specific process is as follows:

The target physical machine set {M1} includes the physical machine M1, and M1 belongs to subnet A, and the subnet set {A} is recorded. Classify the three virtual machines in the virtual machine group, where VM1 and VM2 belong to type 1, the physical machine M1 they run on belongs to the target physical machine set, and VM3 belongs to type 3, and the physical machine M3 they run on does not belong to the target In the collection of physical machines, the subnet B to which M3 belongs does not belong to the subnet collection {A} either. The physical machine with idle resources in the target physical machine set {M1} is M1, and M1 is selected as the migration target physical machine of VM3. The resource management server sends a live migration command to the physical machine M3 where VM3 is located to migrate VM3 to M1, and the IP address of the migrated virtual machine VM3 is ip4. The migration is a cross-subnet migration, and the migration information of the virtual machine is sent to the application management server, including the identifier ID3 of VM3 and the new IP address ip4.

S409, the application management server updates the group virtual machine information; case 1 and case 2 do not need to be updated; case 3 the application management server updates the group virtual machine information of group A maintained by it, and quickly establishes the user terminal UE3 and the post-migration The virtual machine VM3 is connected, and the game application communication connection between VM1 and VM3, VM2 and VM3 is quickly established based on the new IP address of VM3.

An embodiment of the present invention provides a resource management server for implementing virtual machine migration. As shown in FIG. 5, the resource management server 500 includes:

The interface unit 501 is configured to receive the information of the virtual machine group sent by the application management server, the virtual machine group includes multiple virtual machines that complete the application of the specified collaborative group, and the information of the virtual machine group includes the virtual machine group A unique identifier for each virtual machine in the group. Specifically, the unique identifier of the virtual machine may be the current IP address or identifier ID of the virtual machine;

The search unit 502 is configured to search for the deployment location information of each virtual machine in the virtual machine group according to the information of the virtual machine group received by the interface unit 501, and the deployment location information includes the deployment location information of each virtual machine in the virtual machine group The unique identifier of the subnet to which it belongs and the unique identifier of the physical machine it runs on;

The determining unit 503 is configured to determine, according to the deployment location information of the virtual machines found by the searching unit 502, that the virtual machine group can be accommodated, and that after the accommodation, the communication response time between virtual machines in the virtual machine group is shorter than the current communication response time. A set of destination physical machines with a shorter time;

A judging unit 504, configured to judge whether the physical machine on which each virtual machine in the virtual machine group runs belongs to the determined target physical machine set;

A migration unit 505, configured to migrate the virtual machine to the target physical machine set when the physical machine on which the virtual machine runs does not belong to the target physical machine set determined by the determining unit 503;

Optionally, the interface unit 501 is further configured to send the migrated IP address of the virtual machine to the application management server after the migration unit 505 performs cross-subnet migration of the virtual machine.

Referring to FIG. 6, in the resource management server 500, the determining unit 503 may further include:

The first determination module 5031 is configured to determine the subnet that can accommodate the virtual machine group and contains the least number of physical machines when all the virtual machines in the virtual machine group are on different physical machines in the same subnet collection of physical machines;

The first selection module 5032 is configured to select one of the physical machine sets determined by the first determining module 5031 as the target physical machine set; for example, for how many physical machine sets determined by the first determining module 5031 , select a physical machine set that requires the least number of virtual machine migrations in the virtual machine group as the target physical machine set.

Referring to FIG. 7, in the resource management server 500, the determining unit 503 may further include:

The second determination module 5033 is used to determine the subnet that can accommodate the virtual machine group and contains the least number of subnets when all the virtual machines in the virtual machine group are on different physical machines in the same subnet collection of subnets;

The third determination module 5034 is configured to determine, among the subnet sets determined by the second determination module 5033, a physical machine set capable of accommodating the virtual machine group and containing the least number of physical machines;

The second selection module 5035 is configured to select one of the physical machine sets determined by the third determining module 5034 as the target physical machine set; for example, for how many physical machine sets determined by the third determining module 5034 , select a physical machine set that requires the least number of virtual machine migrations in the virtual machine group as the target physical machine set. The resource management server in the embodiment of the present invention can be implemented based on a computer system, and the methods shown in FIGS. 1-4 can all be implemented on a resource management server based on a computer system. Fig. 8 shows an embodiment of a resource management server implemented based on a computer system. In this embodiment, the resource management server may include: a processor 801, a memory 802, and a communication interface 803, wherein:

The communication interface 803 is used for communicating with the application management server. The messages exchanged between the resource management server and the application management server (as shown in FIGS. 1-4 of the method embodiment) are all sent and received through the communication interface 803 . Specifically, the communication interface 803 is used to receive the information of the virtual machine group sent by the application management server, and send the migrated IP address of the virtual machine to the application management server when the cross-subnet migration of the virtual machine occurs; the memory 802 is used to storing program instructions; the processor 801 is configured to call the program instructions stored in the memory 802 after receiving the information of the virtual machine group sent by the application management server, and perform the following operations: according to the information of the virtual machine group, find the The deployment location information of each virtual machine in the virtual machine group, the deployment location information of the virtual machine includes the unique identifier of the subnet to which the virtual machine belongs and the unique identifier of the physical machine it runs on; according to the virtual machine Deployment location information of the machine, determine a target physical machine set that can accommodate the virtual machine group, and the communication response time between the virtual machines in the virtual machine group after accommodation is shorter than the current communication response time; determine Whether the physical machine on which each virtual machine in the virtual machine group runs belongs to the determined target physical machine set; when the physical machine on which the virtual machine runs does not belong to the target physical machine set, The virtual machine is migrated to the target physical machine set.

Wherein, the processor 801 may be a central processing unit (central processing unit, CPU), an application-specific integrated circuit (application-specific integrated circuit, ASIC) or the like. Wherein, the resource management server in this embodiment may include a bus 804 . The processor 801 , the memory 802 and the communication interface 803 can be connected and communicate with each other through the bus 804 . Wherein, the memory 802 may include: entities with storage functions such as random access memory (random access memory, RAM), read-only memory (read-only memory, ROM), and disk;

The processor 801 may also be configured to execute the steps described in FIG. 1 to FIG. 4 in the method embodiment, which will not be described in detail in this embodiment of the present invention.

The above provides a detailed introduction to the one provided by the present invention. In this paper, specific examples are used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention; At the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.

Claims (12)

1. a kind of method for realizing virtual machine (vm) migration, it is characterised in that methods described is included：

The information of the virtual machine group that application management server sends is received, the virtual machine group includes the collaboration for completing to specify The multiple stage virtual machine of group application, the packet of the virtual machine group containing in the virtual machine group every virtual machine it is unique Mark；

According to the information of the virtual machine group, the deployed position information of every virtual machine in the virtual machine group, institute are searched State the unique mark of the deployed position packet containing virtual machine institute home subnet and the physical machine for being run on of virtual machine Unique mark；

According to the deployed position information of the virtual machine, it is determined to accommodate the void after the virtual machine group and receiving Intend communication response time in group of planes group between each virtual machine purpose physical machine collection more shorter than present communications response time Close；

Judge in the virtual machine group whether the physical machine that each virtual machine is run on belongs to the purpose thing determined Reason machine set, when the physical machine that the virtual machine is run on is not belonging to the purpose physical machine set, by the virtual machine Move to the purpose physical machine set.

2. the method for claim 1, it is characterised in that described to be determined to accommodate the virtual machine group and hold Communication response time after receiving in the virtual machine group between each virtual machine mesh more shorter than present communications response time The method of physical machine set include：

When all virtual machines are in the different physical machines of same subnet in the virtual machine group, energy in the subnet is determined Enough accommodate the virtual machine group and comprising the minimum physical machine set of physical machine number；

One of physical machine set is selected as the purpose physical machine set.

3. method as claimed in claim 2, it is characterised in that the one of physical machine set of the selection is used as the purpose Physical machine set is specifically included：

If the physical machine set determined has multiple, select to need virtual machine (vm) migration number of times in the virtual machine group A minimum physical machine collection is combined into the purpose physical machine set.

4. the method for claim 1, it is characterised in that described to be determined to accommodate the virtual machine group and hold Communication response time after receiving in the virtual machine group between each virtual machine mesh more shorter than present communications response time The method of physical machine set include：

When different physical machine of all virtual machines in different sub-network in the virtual machine group, determining can in all-ones subnet Accommodate the virtual machine group and comprising the minimum subnet set of subnet quantity；

Determining in the subnet set can accommodate the virtual machine group and comprising the minimum physical machine of physical machine number Set；

One of physical machine set is selected as the purpose physical machine set.

5. method as claimed in claim 4, it is characterised in that the one of physical machine set of the selection is used as the purpose Physical machine set includes：

If the physical machine set determined has multiple, select to need virtual machine (vm) migration number of times in the virtual machine group A minimum physical machine set is used as the purpose physical machine set.

6. the method for claim 1, it is characterised in that it is described by the virtual machine (vm) migration to the purpose physical machine collection Close, further include：

If the migration is across subnet migration, to application management server the IP address after the virtual machine (vm) migration is sent.

7. a kind of resource management server, comprising：

Interface unit, for receiving the information of the virtual machine group of application management server transmission, the virtual machine group includes The multiple stage virtual machine of collaboration group application specified is completed, the packet of the virtual machine group is containing every in the virtual machine group The unique mark of platform virtual machine；

Searching unit, for the virtual machine group received according to the interface unit information searching described in virtual machine cluster The deployed position information of every virtual machine in group, deployed position packet home subnet containing the virtual machine institute of the virtual machine Unique mark and the unique mark of physical machine that run on；

Determining unit, the deployed position information of the virtual machine for being found according to the searching unit is determined to accommodate The communication response time rings than present communications between each virtual machine in the virtual machine group after the virtual machine group and receiving A shorter purpose physical machine set between seasonable；

Judging unit, for judging the virtual machine group in the physical machine that run on of each virtual machine whether belong to it is described really The purpose physical machine set made；

Migration units, for when the physical machine that the virtual machine is run on is not belonging to the purpose physical machine set, by institute Virtual machine (vm) migration is stated to the purpose physical machine set.

8. resource management server as claimed in claim 7, it is characterised in that the determining unit is included：

First determining module, for when all virtual machines are in the different physical machines of same subnet in the virtual machine group, Determining can accommodate the virtual machine group and comprising the minimum physical machine set of physical machine number in the subnet；

First choice module, for one of them to be selected in the physical machine set that first determining module is determined as institute State purpose physical machine set.

9. resource management server as claimed in claim 8, it is characterised in that：

The first choice module, the further physical machine set for being used to be determined in first determining module has multiple When, select to need a physical machine collection of virtual machine (vm) migration least number of times in the virtual machine group to be combined into the purpose physical machine Set.

10. resource management server as claimed in claim 7, it is characterised in that the determining unit is included：

Second determining module, for when different physical machine of all virtual machines in different sub-network in the virtual machine group, really Making can accommodate the virtual machine group and comprising the minimum subnet set of subnet quantity in all-ones subnet；

3rd determining module：For in the subnet set that second determining module is determined, determine can accommodate it is described Virtual machine group and comprising the minimum physical machine set of physical machine number；

Second selecting module, for selecting one of them as institute in the physical machine set that the 3rd determining module is determined State purpose physical machine set.

11. resource management servers as claimed in claim 10, it is characterised in that：

Second selecting module, the further physical machine set for being used to be determined in the 3rd determining module has multiple When, select to need a physical machine collection of virtual machine (vm) migration least number of times in the virtual machine group to be combined into the purpose physical machine Set.

12. resource management servers as claimed in claim 7, it is characterised in that：

The interface unit, is additionally operable to after across the subnet migration that the migration units perform virtual machine, to application management clothes Business device sends the IP address after the virtual machine (vm) migration.