WO2016082546A1

WO2016082546A1 - Decision-making method and apparatus for virtual machine migration

Info

Publication number: WO2016082546A1
Application number: PCT/CN2015/083192
Authority: WO
Inventors: 郑晓航
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-11-24
Filing date: 2015-07-02
Publication date: 2016-06-02
Also published as: CN105656969A

Abstract

A decision-making method and apparatus for virtual machine migration. The method comprises: acquiring network traffic statistics information of a physical node and network traffic occupancy information of each virtual machine in the physical node; determining whether the network traffic statistics information of the physical node meets threshold information, the threshold information being traffic information of the physical node in a normal working state; if the network traffic statistics information of the physical node does not meet the threshold information, determining, according to preset traffic occupancy information of each virtual machine, a difference between the network traffic occupancy information and the preset traffic occupancy information of each virtual machine; and implementing virtual machine migration according to the difference.

Description

Virtual machine migration decision method and device

Technical field

This paper deals with the field of cloud computing and network virtualization, and in particular relates to a virtual machine migration decision method and device.

Background technique

With the development of cloud computing technology and network virtualization technology, OpenStack (no Chinese technical terminology) provides a set of operating platforms or tools to deploy the cloud to provide solutions for cloud computing infrastructure services. OpenStack is open source, interoperable, portable, and easy to use. It also provides an API (Application Programming Interface) for secondary development and easy integration with other systems. Win more and more attention in the industry.

The migration of a virtual machine refers to moving the virtual machine operating system and applications running on the source physical host to the target physical host and running normally on the target host. The migration function of OpenStack's own virtual machine allows a running virtual machine instance to be migrated from one compute node to another, but the migration of the virtual machine requires the operator to manually operate the interface because the operator is in the virtual machine migration. It is impossible to understand the network utilization of the entire network. It is not clear how to migrate to achieve the optimal effect. The network may become more congested after migration. Therefore, the current implementation cannot achieve the purpose of dynamic monitoring, dynamic decision-making, and dynamic migration.

Summary of the invention

The embodiment of the invention provides a virtual machine migration decision method and device, which solves the problem that the network is blocked due to virtual machine migration and the dynamic decision cannot be made.

The embodiment of the invention provides a virtual machine migration decision method, which includes:

Obtaining network traffic statistics information of the physical node, and network traffic occupation information of each virtual machine in the physical node;

Determining whether the network traffic statistics information of the physical node meets threshold information, where the threshold information is traffic information under normal working of the physical node;

If not, the difference between the network traffic occupation information and the traffic occupation information of each virtual machine is determined according to the preset traffic occupation information of each virtual machine;

Perform migration on the virtual machine based on the difference.

Optionally, the network traffic statistics information includes a current actual physical network card bandwidth occupation of the physical node;

Determining whether the network traffic statistics information of the physical node meets the threshold information, where the threshold information is that the traffic information of the physical node under normal working includes:

Determining, according to the maximum actual physical NIC bandwidth usage of the physical node, the bandwidth occupied by the physical NIC under normal working of the physical node;

Determining whether the current actual physical NIC bandwidth usage of the physical node meets the physical NIC bandwidth usage of the physical node under normal working.

Optionally, performing the migration to the virtual machine according to the difference includes:

Determining whether the difference is positive;

Performing a migration on at least one virtual machine whose difference is positive.

Optionally, the network traffic occupation information includes a current actual egress bandwidth occupation of the virtual machine;

Determining, according to the traffic occupation information preset by each virtual machine, the difference between the network traffic occupation information and the traffic occupation information of each virtual machine includes:

Presetting the maximum amount of outlet bandwidth of each virtual machine respectively;

And calculating, according to the maximum amount of the egress bandwidth preset by each virtual machine, a difference between a current actual egress bandwidth occupancy of each virtual machine and a maximum egress bandwidth amount.

Optionally, performing the migration on the at least one virtual machine whose positive value is positive includes:

Add the virtual machine whose positive value is positive to the virtual machine list to be migrated;

Determining at least one virtual machine to be migrated in the virtual machine list to be migrated, so that network traffic statistics of the physical node after the migration of the at least one virtual machine to be migrated meets the threshold information;

Using the at least one virtual machine to be migrated as a virtual machine to be migrated, and the virtual machine to be migrated The machine is scheduled to perform the migration.

Optionally, the determining, in the list of the virtual machines to be migrated, the at least one virtual machine that needs to be migrated, so that the network traffic statistics of the physical node after the migration of the at least one virtual machine that needs to be migrated meets the threshold information. include:

Determining, in the list of the virtual machines to be migrated, whether the network traffic statistics of the physical node after the virtual machine having the largest difference is migrated meets the threshold information;

If yes, determine the virtual machine with the largest difference as the virtual machine to be migrated. If not, determine the network of the physical node after the virtual machine with the largest difference and the virtual machine with the largest difference. Whether the traffic statistics information meets the threshold information, and if yes, the virtual machine with the largest difference and the virtual machine with the largest difference are determined as virtual machines to be migrated, and if not, the virtual machine is determined to be migrated. The network traffic statistics of the subsequent physical node satisfy the threshold information, and the virtual machine is determined to be a virtual machine that needs to be migrated.

Optionally, before the migrating the virtual machine to be migrated, the method further includes:

All the virtual machines in the virtual machine list to be migrated are arranged in descending order according to the difference;

Limiting the traffic of the at least one virtual machine in the prior arrangement;

After the performing, by using the virtual machine to be migrated as the virtual machine to be migrated, performing the migration on the virtual machine to be migrated, the method further includes:

If the at least one virtual machine includes the unmigrated virtual machine, the traffic restriction on the unmigrated virtual machine is cancelled.

Optionally, before the performing the migration on the virtual machine according to the difference, the method further includes:

Obtain network traffic statistics of other physical nodes;

And selecting, according to the network traffic statistics information of the other physical nodes, the physical node that meets the virtual machine migration condition, so that the network traffic statistics information of the physical node that is moved into the virtual machine still meets the threshold information, and the selected physical The node performs the migration as the target physical node of the at least one virtual machine.

The embodiment of the invention further provides a virtual machine migration decision device, comprising:

Obtaining a module, configured to obtain network traffic statistics information of the physical node, and network traffic occupation information of each virtual machine in the physical node;

The determining module is configured to determine whether the network traffic statistics information of the physical node acquired by the acquiring module meets threshold information, where the threshold information is traffic information under normal working of the physical node;

a determining module, configured to determine, according to the traffic occupation information preset by each virtual machine, a difference between the network traffic occupation information and the traffic occupation information of each virtual machine, respectively, if the determining module determines that the content is not satisfied; as well as

The migration module is configured to perform migration on the virtual machine according to the difference determined by the determining module.

The determining module is further configured to determine, according to a maximum actual physical NIC bandwidth occupancy of the physical node, a bandwidth occupied by the physical NIC under normal working of the physical node;

The determining module is configured to determine whether the current actual physical network card bandwidth occupancy of the physical node meets the physical network card bandwidth occupancy of the physical node under normal working.

Optionally, the determining module is further configured to determine whether the difference determined by the determining module is positive;

The migration module is configured to perform migration on the at least one virtual machine whose difference is positive.

The determining module includes:

Setting a sub-module, which is set to respectively preset a maximum amount of exit bandwidth of each of the virtual machines;

The calculating sub-module is configured to calculate, according to the maximum amount of the egress bandwidth preset by each virtual machine, a difference between the current actual egress bandwidth occupancy of each virtual machine and the maximum egress bandwidth.

Optionally, the device further includes:

Add a module, and set to add the virtual machine whose positive value is positive to the virtual machine list to be migrated;

The determining module is further configured to: in the list of the virtual machines to be migrated, determine at least one virtual machine that needs to be migrated, so that the network of the physical node after the at least one virtual machine that needs to be migrated is migrated The traffic statistics information meets the threshold information;

The migration module is configured to perform the migration on the virtual machine to be migrated by using the at least one virtual machine to be migrated as a virtual machine to be migrated.

Optionally, the determining module is further configured to determine, in the list of the virtual machines to be migrated, whether the network traffic statistics information of the physical node after the virtual machine having the largest difference value is migrated meets the threshold information;

The determining module is configured to determine, if the determining module is satisfied, the virtual machine with the largest difference as the virtual machine that needs to be migrated, and if not, the determining module is further configured to determine that the migration is performed. Whether the network traffic statistics of the physical node having the largest difference and the virtual node having the second largest difference satisfy the threshold information, and the determining module is configured to: if the determining module determines that the content is satisfied, the The virtual machine with the largest difference and the virtual machine with the largest difference are determined to be virtual machines that need to be migrated. If not, the judgment module is further configured to continue to judge until the network traffic of the physical node after the virtual machine is migrated is determined. The statistical information meets the threshold information, and the determining module is configured to determine a virtual machine that meets the condition determined by the determining module as a virtual machine that needs to be migrated, where the condition is a network traffic of a physical node after the virtual machine is migrated. The statistical information satisfies the threshold information.

Optionally, the device further includes:

The arranging module is configured to arrange all the virtual machines in the virtual machine list to be migrated according to the difference from large to small;

a limiting module, configured to limit traffic of the at least one virtual machine that is sequentially arranged by the arranging module; and

The module is canceled, and if the at least one virtual machine includes the unmigrated virtual machine, the traffic restriction on the unmigrated virtual machine is cancelled.

Optionally, the acquiring module is further configured to obtain network traffic statistics information of other physical nodes;

The device further includes: a selecting module, configured to select, according to network traffic statistics information of other physical nodes acquired by the acquiring module, a physical node that satisfies a virtual machine moving in condition, and a network of the physical node that moves into the virtual machine The traffic statistics information still satisfies the threshold information, and the selected physical node is used as the target physical node of the at least one virtual machine to perform migration.

The embodiment of the invention further provides a computer readable storage medium storing program instructions, which can be implemented when the program instructions are executed.

The embodiment of the invention provides a virtual machine migration decision method and device, and combines the services provided by the OpenStack framework and the OpenStack to determine whether it is needed according to the network traffic statistics of the physical node and the network traffic occupation information of each virtual machine in the physical node. The migration of virtual machines in physical nodes overcomes the shortcomings of OpenStack's existing migration methods. It can dynamically monitor the network traffic usage of virtual machines, dynamically determine the migration of virtual machines, and reduce the manual participation of system maintenance. By obtaining and storing network traffic statistics, the network traffic usage of the virtual machine is analyzed to determine whether to trigger the dynamic migration of the virtual machine and the dynamic control of the virtual machine network traffic. In addition, the original OpenStack host selection can be modified. The algorithm increases the filtering conditions for the network and optimizes the host selection algorithm when the virtual machine is migrated.

BRIEF abstract

FIG. 1 is a flowchart of a virtual machine migration decision method according to Embodiment 1 of the present invention;

2 is a schematic structural diagram of a virtual machine migration decision apparatus according to Embodiment 2 of the present invention;

FIG. 3 is a schematic structural diagram of a virtual machine migration decision apparatus according to Embodiment 3 of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

Embodiment 1:

FIG. 1 is a flowchart of a virtual machine migration decision method according to Embodiment 1 of the present invention. As shown in FIG. 1 , the virtual machine migration decision method includes:

S101: Obtain network traffic statistics information of the physical node, and network traffic occupation information of each virtual machine in the physical node;

S102: Determine whether the network traffic statistics information of the physical node meets the threshold information, where the threshold information is traffic information under normal working of the physical node;

S103: If not, according to the traffic occupation information preset by each virtual machine, determine the difference between the network traffic occupation information and the traffic occupation information of each virtual machine respectively;

S104: Perform migration on the virtual machine according to the difference.

In order to dynamically monitor the network traffic usage of the virtual machine and dynamically determine the migration of the virtual machine, the network traffic statistics of the physical node and the network traffic occupation information of each virtual machine in the physical node can be obtained, and the obtaining action can be obtained in real time. It can also be used for timing acquisition. According to the network traffic statistics of the physical node and the network traffic occupation information of each virtual machine in the physical node, it is determined whether the virtual machine in the physical node needs to be migrated, thereby reducing the manual participation of the system maintenance. . The physical node may be an OpenStack computing node, that is, a physical host, and whether the OpenStack computing node needs to migrate the virtual machine therein, and the OpenStack control node may make a decision on the OpenStack computing node, that is, the OpenStack control node reports the network traffic reported by the node according to the OpenStack. Statistics to determine whether to migrate virtual machines in OpenStack compute nodes.

In this embodiment, the network traffic statistics of the physical node are used to determine whether the virtual machine in the physical node needs to be migrated, so that the network traffic statistics of the physical node are lower than the threshold information, and the threshold information is the physical node. The traffic information under normal work makes it meet the actual application requirements. The network traffic statistics include, but are not limited to, the physical host's identification information, the current actual physical network card bandwidth usage, and the like. The current actual physical network card bandwidth usage includes, but is not limited to, the physical port of the physical node, the data packet rate, and the actual Processing network throughput, etc. When determining whether the virtual machine in the physical node needs to be migrated, the bandwidth of the physical network card under normal working is determined according to the maximum actual physical NIC bandwidth usage of the physical node (MaxVMPhyNet), that is, the physical node is working normally. The traffic information needs to be described. For the maximum actual physical NIC bandwidth usage, if the system does not limit the physical NIC bandwidth usage of the physical node, the maximum physical NIC bandwidth occupancy supported by the physical node may be used as the traffic information. The maximum actual physical NIC bandwidth usage, and then determine the traffic information under normal working. If the system limits the physical NIC bandwidth usage of the physical node, the maximum physical NIC bandwidth occupied by the system for the physical node is taken as its maximum actual The physical NIC bandwidth usage, and then determine the traffic information under normal work. In practical applications, in order to make the physical node meet the requirements for network traffic occupation, the physical network card bandwidth usage of the physical node under normal working can be set to be lower than the maximum actual. 80% of the physical NIC bandwidth usage, that is, the physical NIC bandwidth usage that is less than 80% of the maximum actual physical NIC bandwidth usage is the traffic information under normal working of the physical node, and the actual physical NIC bandwidth of the physical node is determined. Whether the current physical network card bandwidth usage of the physical node is lower than 80% of the maximum actual physical NIC bandwidth of the physical node, if the current physical physics of a physical node If the NIC bandwidth usage is less than 80% of the maximum actual physical NIC bandwidth, you need to migrate the running virtual machine so that the physical node meets the actual network application requirements. If it is not lower, you do not need to The running virtual machine is migrated, so that the physical node continues to work normally and continues to monitor other physical nodes.

In this embodiment, if it is determined that the network traffic statistics information of a physical node does not satisfy the threshold information, the virtual machine in the physical node needs to be migrated according to the network traffic occupation information of each virtual machine in the physical node. The network traffic statistics information of the physical node meets the threshold information, for example, according to the traffic occupation information preset by each virtual machine, respectively, the difference between the network traffic occupation information and the traffic occupation information of each virtual machine is determined, that is, separately calculated. The difference between the network traffic usage information and the traffic occupation information of each virtual machine is determined, and the difference is positive. The difference indicates that the network traffic usage information of the virtual machine is greater than the preset traffic occupation information. The network traffic occupies at least one virtual machine whose information is greater than its preset traffic occupation information, and performs migration on the at least one virtual machine.

In the foregoing technical solution, the network traffic occupation information includes, but is not limited to, the unique identification information of the virtual machine and the current actual egress bandwidth occupancy, and the current actual egress bandwidth occupancy includes but is not limited to the transmission packet rate of the virtual machine, Receive packet rate, etc. For each virtual machine in a physical node, when creating through OpenStack, the current actual physical NIC bandwidth usage in the network traffic usage information of a virtual machine is preset, and the maximum export bandwidth of the virtual machine is preset (MaxVMPhyNetUse). That is, the maximum value of the data transmitted by the virtual machine using the physical network card is defined. It should be noted that multiple virtual machines can be created in the same physical node. When defining the maximum amount of egress bandwidth of each virtual machine, it is necessary to ensure the same physical node. The sum of the maximum amount of egress bandwidth for all virtual machines cannot exceed the physical bandwidth threshold of the physical node. In practical applications, it is necessary to ensure that the current actual bandwidth consumption of the virtual machine (CurrentVMPhyNetUse) cannot exceed the maximum amount of the exported bandwidth. When it is determined that the network traffic statistics of a physical node do not meet the threshold value. During the interval, according to the maximum amount of the outlet bandwidth preset by each virtual machine, it is determined whether the network traffic occupation information of each virtual machine in the physical node exceeds the preset maximum outlet bandwidth amount, that is, each virtual machine is separately calculated. The difference between the current actual egress bandwidth occupancy and the maximum egress bandwidth is based on the difference, and the virtual machine is migrated so that the network traffic statistics of the physical node meet the threshold information.

In this embodiment, after the difference between the network traffic occupation information and the traffic occupation information of each virtual machine is determined, the virtual machine whose positive value is positive is added to the virtual machine to be migrated, and the virtual machine to be migrated In the machine list, the at least one virtual machine that needs to be migrated is determined. The principle of the determination is that the network traffic statistics of the physical node after the migration of the at least one virtual machine that needs to be migrated meets the threshold information, so that the physical node can continue to work normally. The virtual machine to be migrated is used as the virtual machine to be migrated, and the migration is performed on the virtual machine to be migrated.

Optionally, in the foregoing technical solution, in order to make the network traffic statistics information of the physical node after the virtual machine is migrated meet the threshold information, the embodiment provides a method for determining the virtual machine to be migrated, and of course, other determination manners are not excluded. In the virtual machine list to be migrated, it is determined whether the network traffic statistics information of the physical node after the virtual machine having the largest difference value meets the threshold information, that is, the virtual machine with the largest difference is calculated to migrate from the physical node to another physical node. Then, the network traffic statistics of the physical node meets the threshold information. If yes, the virtual machine with the largest difference is determined as the virtual machine to be migrated, and the virtual machine to be migrated is used as the virtual machine to be migrated. The virtual machine to be migrated performs migration so that the network traffic statistics of the network node after migrating the virtual machine with the largest difference meets the threshold information for normal operation; if not, the virtual machine with the largest migration difference and the difference are determined. Whether the network traffic statistics of the physical node after the virtual machine with the second largest value meets the threshold information. That is, if it is determined that the network traffic statistics of the physical node after the virtual machine having the largest migration difference still does not satisfy the threshold information, the virtual machine with the largest difference and the virtual machine with the largest difference are migrated from the physical node to the other. After the physical node, the network traffic statistics of the physical node meet the threshold information. If yes, the virtual machine with the largest difference and the virtual machine with the largest difference are determined as virtual machines to be migrated. The virtual machine is configured as a virtual machine to be migrated, and the virtual machine to be migrated is migrated, so that the network traffic statistics of the network node after the virtual machine with the largest difference and the virtual machine with the largest difference meet the threshold information, so as to be normal. Work; if not, then so on, continue to follow the above calculations, the difference between the virtual machine order, from large to small, Then, the network traffic statistics threshold information of the physical node after the virtual machine is migrated is determined, and then the virtual machine to be migrated is determined, and the virtual machine to be migrated is used as the virtual machine to be migrated, and the virtual machine to be migrated is executed. migrate.

Optionally, in this embodiment, in order to ensure network traffic requirements during the virtual machine migration process, before the migration of the virtual machine to be migrated, the virtual machine communication in the virtual machine list to be migrated is restricted, such as All the virtual machines in the migrating virtual machine list are arranged in descending order according to the above-mentioned differences. The traffic of the at least one virtual machine in the sequence is limited. For the traffic limiting measures, the virtual machine to be migrated can be restricted. The traffic of the first N (N=1, 2, 3, ...) virtual machines in the list is arranged in such a way that the actual physical NIC bandwidth consumption of the physical node during the virtual machine migration process is lower than its maximum physics. 70% of the amount of NIC bandwidth. After the virtual machine migration is complete, if the first N virtual machines that previously restricted traffic are migrated, you do not need to cancel the traffic restriction. If the first N virtual machines that previously restricted traffic include unmigrated virtual machines, you need to cancel the Migrate virtual machine traffic limits.

Optionally, in this embodiment, after the at least one virtual machine to be migrated is determined, the migration is performed on the at least one virtual machine to be migrated, so that the target physical node of the at least one virtual machine to be migrated needs to be determined, and network condition filtering is added. After the migration of the at least one virtual machine to be migrated is performed, the network traffic statistics of the physical node that is to be migrated to the at least one virtual machine to be migrated do not meet the threshold information, so the network traffic of other physical nodes is acquired before the migration is performed. The statistics information is selected according to the network traffic statistics of the other physical nodes, and the physical node that meets the virtual machine migration condition is selected, so that the network traffic statistics of the physical node that is moved into the virtual machine still meet the threshold information, that is, the calculation moves into the at least one Whether the network traffic statistics of the physical node after the virtual machine is to be migrated meets the threshold information. If the physical node is lower than the target, the physical node can be used as the target physical node for performing the migration of the at least one virtual machine to be migrated, and the dynamic migration process of the OpenStack virtual machine is started. , but need to be dynamic on the virtual machine before starting Target physical node selection algorithm shift the process to optimize the migration of virtual machines can be moved to the correct physical node, after the end of the optimization, you can start the migration process to treat migrate virtual machines to perform the migration.

Combining the services provided by the OpenStack framework and OpenStack, based on the network traffic statistics of the physical nodes and the network traffic occupation information of each virtual machine in the physical node, it is determined whether the virtual machines in the physical nodes need to be migrated, and the virtual machine can be dynamically monitored. Network traffic usage, Dynamically decide the migration of virtual machines and reduce the manual participation of system maintenance. By obtaining and storing network traffic statistics, the network traffic usage of the virtual machine is analyzed to determine whether to trigger dynamic migration of the virtual machine and dynamic control of the virtual machine network traffic. In addition, the OpenStack host selection algorithm can be modified. Increase the filtering conditions for the network and optimize the host selection algorithm when the virtual machine is migrated.

Embodiment 2:

2 is a schematic structural diagram of a virtual machine migration decision apparatus according to Embodiment 2 of the present invention. As shown in FIG. 2, the virtual machine migration decision apparatus includes:

The obtaining module 1 is configured to obtain network traffic statistics information of the physical node, and network traffic occupation information of each virtual machine in the physical node;

The determining module 2 is configured to determine whether the network traffic statistics information of the physical node acquired by the acquiring module 1 meets the threshold information, and the threshold information is the traffic information under normal working of the physical node;

The determining module 3 is configured to determine, according to the traffic occupation information preset by each virtual machine, the difference between the network traffic occupation information and the traffic occupation information of each virtual machine, respectively, if the determining module 2 determines that the content is not satisfied;

The migration module 4 is configured to perform migration on the virtual machine according to the difference determined by the determination module 3.

Optionally, the network traffic statistics information includes the current actual physical network card bandwidth usage of the physical node, and the determining module 3 is further configured to determine the physical network card bandwidth usage of the physical node under normal working according to the maximum actual physical network card bandwidth usage of the physical node. The judging module 2 is configured to determine whether the current actual physical network card bandwidth occupancy of the physical node satisfies the physical network card bandwidth occupancy of the physical node under normal working.

Optionally, the determining module 2 is further configured to determine whether the difference determined by the determining module 3 is positive, and the migration module 4 is configured to perform migration on the at least one virtual machine whose positive value is positive.

Optionally, the network traffic occupation information includes a current actual outlet bandwidth usage of the virtual machine; the determining module 3 includes a setting submodule 31 and a computing submodule 32, wherein: the setting submodule 31 is configured to preset the maximum of each virtual machine respectively. The amount of the egress bandwidth; the calculation sub-module 32 is configured to calculate the current actual egress bandwidth usage of each virtual machine according to the maximum amount of the egress bandwidth preset by each virtual machine. The difference from the maximum amount of exit bandwidth.

Optionally, the device further includes an adding module 5, the adding module 5 is configured to add a virtual machine with a positive difference to the virtual machine to be migrated; the determining module 3 is further configured to determine at least the virtual machine to be migrated, determining at least A virtual machine that needs to be migrated, so that the network traffic statistics of the physical node after the migration of at least one virtual machine that needs to be migrated meets the threshold information; the migration module 4 is configured to treat at least one virtual machine to be migrated as the virtual machine to be migrated, and treat Migrate the virtual machine to perform the migration.

Optionally, the determining module 2 is further configured to determine, in the list of the virtual machines to be migrated, whether the network traffic statistics information of the physical node after the virtual machine having the largest difference value meets the threshold information, and the determining module 3 is configured to determine the module 2 If the determination is satisfied, the virtual machine with the largest difference is determined as the virtual machine that needs to be migrated. If not, the determination module 2 is further configured to determine the virtual machine with the largest migration difference and the physical entity after the virtual machine with the largest difference. Whether the network traffic statistics of the node meets the threshold information; the determining module 3 is configured to determine, if the determining module 2 is satisfied, the virtual machine with the largest difference and the virtual machine with the largest difference as the virtual machine to be migrated, if If the method is not satisfied, the determining module 2 is further configured to continue to determine until the network traffic statistics of the physical node after the virtual machine is migrated meets the threshold information; the determining module 3 is configured to satisfy the determining by the determining module 2 The virtual machine of the condition is determined to be a virtual machine that needs to be migrated, and the condition is that the network traffic statistics of the physical node after the virtual machine is migrated are satisfied. Said threshold information.

Optionally, the device further includes an arranging module 6, a limiting module 7, and a canceling module 8, wherein: the arranging module 6 is configured to arrange all the virtual machines in the virtual machine list to be migrated according to the difference from large to small. The restriction module 7 is configured to limit the traffic of the at least one virtual machine after the arrangement module 6 is sequentially arranged; the cancellation module 8 is configured to cancel the unmigrated virtual machine if at least one of the virtual machines includes the unmigrated virtual machine Traffic restrictions.

Optionally, the obtaining module 1 is further configured to obtain network traffic statistics information of other physical nodes, and the device further includes a selecting module 9 configured to select, according to network traffic statistics information of other physical nodes acquired by the acquiring module 1, The physical node that meets the conditions for the virtual machine to move in, the network traffic statistics of the physical node that is moved into the virtual machine still meets the threshold information, and the selected physical node is the target physical node that performs the migration as at least one virtual machine.

Embodiment 3:

FIG. 3 is a schematic structural diagram of a virtual machine migration decision apparatus according to Embodiment 3 of the present invention. As shown in FIG. 3, this embodiment includes an OpenStack control node A and multiple OpenStack compute nodes Bn. In the OpenStack controller node A, the network monitoring module 11 and the plug-in module 12 are added, and the network component module 13 and the migration module 15 are modified. In the computing node of the OpenStack, the data proxy module 22 is added, and the component module is modified. twenty three.

S1: The switch module running on the OpenStack compute node B1 needs to configure the sflow (a network monitoring technology) statistics collection function, and report the statistics to the proxy module 22 resident in the OpenStack compute node, and the proxy module of each OpenStack compute node. Statistical processing of data through sflow;

S2: the proxy module 22 uploads the processed statistical data to the network component module 13 in the OpenStack control node A by means of a message queue;

S3: the network component plug-in module 13 is responsible for storing the statistical data in the database module 14;

S4: The network monitoring module 11 monitors network utilization on each OpenStack computing node in real time, and obtains statistical data through the rest API interface provided by the plug-in module 12;

S5: the plug-in module 12 obtains statistical data from the database module 14;

S6: The network monitoring module 11 determines whether there is a virtual machine to be migrated according to the statistics returned by the plug-in module 12. For example, the virtual machine migration decision method provided in the first embodiment; if present, the network monitoring module can invoke the rest API. Calling the network component module 13 to limit the flow of the virtual machine;

S7: The network component module 13 controls the component module 23 on the OpenStack computing node to implement the current limiting of the virtual machine by means of message communication;

S8: the component module 23 implements current limiting by means of an Openflow meter by invoking a command of the switch module 21;

S9: the network monitoring module 11 calls the migration module 15;

S10: The migration module 15 needs to make a selection according to the current network condition when selecting the target migration host, and needs to invoke the network component module 13 to acquire network data by means of the rest API;

S11: The network component module 13 acquires statistical data from the database module 14;

S12: After the migration ends, the network monitoring module 11 needs to call the network component module 13 to cancel the The traffic limit of the migrated virtual machine;

S13: The network component module 13 controls the component module 23 on the OpenStack computing node by means of message communication to implement the current limiting of the virtual machine.

S14: The component module 23 cancels the current limiting by means of the command of the switch module 21 through the Openflow meter.

The implementation method in this embodiment has the following advantages:

(1) Introducing network data statistics, by adding data agents in OpenStack compute nodes and adding network data plug-ins on OpenStack control nodes to achieve collection and storage of network statistics;

(2) By adding a network monitoring module to the OpenStack control node to analyze the utilization of the virtual machine network to decide whether to trigger the dynamic migration of the virtual machine and the dynamic control of the virtual machine network traffic;

(3) By modifying the OpenStack host selection algorithm, increasing the filtering conditions on the network, and optimizing the host selection algorithm during virtual machine migration.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware or in the form of a software function module. Embodiments of the invention are not limited to any specific form of combination of hardware and software.

Industrial applicability

In the embodiment of the present invention, according to the network traffic statistics information of the physical node and the network traffic occupation information of each virtual machine in the physical node, it is determined whether the virtual machine needs to be migrated, and the network traffic occupancy of the virtual machine can be dynamically monitored, and the dynamic decision virtual Machine migration reduces manual participation in system maintenance. By obtaining and storing network traffic statistics, the network traffic usage of the virtual machine is analyzed to determine whether to trigger dynamic migration of the virtual machine and dynamic control of the virtual machine network traffic.

Claims

A virtual machine migration decision method includes:

Obtaining network traffic statistics information of the physical node, and network traffic occupation information of each virtual machine in the physical node;

Determining whether the network traffic statistics information of the physical node meets threshold information, where the threshold information is traffic information under normal working of the physical node;

If not, the difference between the network traffic occupation information and the traffic occupation information of each virtual machine is determined according to the preset traffic occupation information of each virtual machine;

Perform migration on the virtual machine based on the difference.
The virtual machine migration decision method according to claim 1, wherein the network traffic statistics information includes a current actual physical network card bandwidth occupancy of the physical node;

The determining whether the network traffic statistics information of the physical node meets the threshold information includes:

Determining, according to the maximum actual physical NIC bandwidth usage of the physical node, the bandwidth occupied by the physical NIC under normal working of the physical node;

Determining whether the current actual physical NIC bandwidth usage of the physical node meets the physical NIC bandwidth usage of the physical node under normal working.
The virtual machine migration decision method according to claim 1, wherein the performing migration to the virtual machine according to the difference includes:

Determining whether the difference is positive;

Performing a migration on at least one virtual machine whose difference is positive.
The virtual machine migration decision method according to claim 3, wherein the network traffic occupation information comprises a current actual outlet bandwidth occupancy of the virtual machine;

Determining, according to the traffic occupation information preset by each virtual machine, the difference between the network traffic occupation information and the traffic occupation information of each virtual machine includes:

Presetting the maximum amount of outlet bandwidth of each virtual machine respectively;

And calculating, according to the maximum amount of the egress bandwidth preset by each virtual machine, a difference between a current actual egress bandwidth occupancy of each virtual machine and a maximum egress bandwidth amount.
The virtual machine migration decision method according to claim 3 or 4, wherein the performing migration to the at least one virtual machine whose positive value is positive comprises:

Add the virtual machine whose positive value is positive to the virtual machine list to be migrated;

Determining at least one virtual machine to be migrated in the virtual machine list to be migrated, so that network traffic statistics of the physical node after the migration of the at least one virtual machine to be migrated meets the threshold information;

The at least one virtual machine to be migrated is used as a virtual machine to be migrated, and the migration is performed on the virtual machine to be migrated.
The virtual machine migration decision method according to claim 5, wherein in the list of virtual machines to be migrated, at least one virtual machine that needs to be migrated is determined, so that the physical after the migration of the at least one virtual machine to be migrated is performed. The network traffic statistics of the node satisfy the threshold information, including:

Determining, in the list of the virtual machines to be migrated, whether the network traffic statistics of the physical node after the virtual machine having the largest difference is migrated meets the threshold information;

If yes, determine the virtual machine with the largest difference as the virtual machine to be migrated. If not, determine the network of the physical node after the virtual machine with the largest difference and the virtual machine with the largest difference. Whether the traffic statistics information meets the threshold information, and if yes, the virtual machine with the largest difference and the virtual machine with the largest difference are determined as virtual machines to be migrated, and if not, the virtual machine is determined to be migrated. The network traffic statistics of the subsequent physical node satisfy the threshold information, and the virtual machine is determined to be a virtual machine that needs to be migrated.
The virtual machine migration decision method according to claim 5,

Before the performing, by using the virtual machine that needs to be migrated as the virtual machine to be migrated, performing the migration on the virtual machine to be migrated, the method further includes:

All the virtual machines in the virtual machine list to be migrated are arranged in descending order according to the difference;

Limiting the traffic of the at least one virtual machine in the prior arrangement;

After the performing, by using the virtual machine to be migrated as the virtual machine to be migrated, performing the migration on the virtual machine to be migrated, the method further includes:

If the at least one virtual machine includes an unmigrated virtual machine, cancel the unmigrated The flow limit of the virtual machine.
The virtual machine migration decision method according to any one of claims 1 to 4, wherein before the performing the migration on the virtual machine according to the difference, the method further includes:

Obtain network traffic statistics of other physical nodes;

And selecting, according to the network traffic statistics information of the other physical nodes, the physical node that meets the virtual machine migration condition, so that the network traffic statistics information of the physical node that is moved into the virtual machine still meets the threshold information, and the selected physical The node performs the migration as the target physical node of the at least one virtual machine.
A virtual machine migration decision device includes:

Obtaining a module, configured to obtain network traffic statistics information of the physical node, and network traffic occupation information of each virtual machine in the physical node;

The determining module is configured to determine whether the network traffic statistics information of the physical node acquired by the acquiring module meets threshold information, where the threshold information is traffic information under normal working of the physical node;

a determining module, configured to determine, according to the traffic occupation information preset by each virtual machine, a difference between the network traffic occupation information and the traffic occupation information of each virtual machine, respectively, if the determining module determines that the content is not satisfied; as well as

The migration module is configured to perform migration on the virtual machine according to the difference determined by the determining module.
The virtual machine migration decision device according to claim 9, wherein the network traffic statistics information includes a current actual physical network card bandwidth occupancy of the physical node;

The determining module is further configured to determine, according to a maximum actual physical NIC bandwidth occupancy of the physical node, a bandwidth occupied by the physical NIC under normal working of the physical node;

The determining module is configured to determine whether the current actual physical network card bandwidth occupancy of the physical node meets the physical network card bandwidth occupancy of the physical node under normal working.
The virtual machine migration decision device according to claim 9,

The determining module is further configured to determine whether the difference determined by the determining module is positive;

The migration module is configured to perform migration on the at least one virtual machine whose difference is positive.
The virtual machine migration decision device according to claim 11, wherein said network traffic The occupancy information includes the current actual egress bandwidth usage of the virtual machine;

The determining module includes:

Setting a sub-module, which is set to respectively preset a maximum amount of exit bandwidth of each of the virtual machines;

The calculating sub-module is configured to calculate, according to the maximum amount of the egress bandwidth preset by each virtual machine, a difference between the current actual egress bandwidth occupancy of each virtual machine and the maximum egress bandwidth.
The virtual machine migration decision device according to claim 11 or 12, further comprising:

Add a module, and set to add the virtual machine whose positive value is positive to the virtual machine list to be migrated;

The determining module is further configured to: determine, in the list of virtual machines to be migrated, at least one virtual machine that needs to be migrated, so that network traffic statistics of the physical node after the migration of the at least one virtual machine that needs to be migrated meets the threshold information;

The migration module is configured to perform the migration on the virtual machine to be migrated by using the at least one virtual machine to be migrated as a virtual machine to be migrated.
The virtual machine migration decision device according to claim 13,

The determining module is further configured to determine, in the list of the virtual machines to be migrated, whether the network traffic statistics information of the physical node after the virtual machine having the largest difference is migrated meets the threshold information;

The determining module is configured to determine, if the determining module is satisfied, the virtual machine with the largest difference as the virtual machine that needs to be migrated, and if not, the determining module is further configured to determine that the migration is performed. Whether the network traffic statistics of the physical node having the largest difference and the virtual node having the second largest difference satisfy the threshold information, and the determining module is configured to: if the determining module determines that the content is satisfied, the The virtual machine with the largest difference and the virtual machine with the largest difference are determined to be virtual machines that need to be migrated. If not, the judgment module is further configured to continue to judge until the network traffic of the physical node after the virtual machine is migrated is determined. The statistical information meets the threshold information, and the determining module is configured to determine a virtual machine that meets the condition determined by the determining module as a virtual machine that needs to be migrated, where the condition is a network traffic of a physical node after the virtual machine is migrated. The statistical information satisfies the threshold information.
The virtual machine migration decision device of claim 13, the device further comprising:

Arranging a module, configured to follow all the virtual machines in the list of virtual machines to be migrated according to the difference The values are arranged in order from large to small;

a limiting module, configured to limit traffic of the at least one virtual machine that is sequentially arranged by the arranging module; and

The module is canceled, and if the at least one virtual machine includes the unmigrated virtual machine, the traffic restriction on the unmigrated virtual machine is cancelled.
A virtual machine migration decision device according to any one of claims 9-12,

The obtaining module is further configured to obtain network traffic statistics information of other physical nodes;

The device further includes: a selecting module, configured to select, according to network traffic statistics information of other physical nodes acquired by the acquiring module, a physical node that satisfies a virtual machine moving in condition, and a network of the physical node that moves into the virtual machine The traffic statistics information still satisfies the threshold information, and the selected physical node is used as the target physical node of the at least one virtual machine to perform migration.
A computer readable storage medium storing program instructions that, when executed, implement the method of any of claims 1-8.