Method and device for realizing virtual machine migration and cluster system

Abstract

The invention provides a method and a device for realizing virtual machine migration and a cluster system, wherein the method comprises the following steps that after a source physical host machine and virtual machines to be migrated are determined, the migration sequence of the virtual machines is determined, in addition, the resource use information of a plurality of current operating physical host machines on the cluster system is analyzed, and the physical host machines are subjected to physical host machine sequencing according to the resource use information priority; from the virtual machine with the forefront sequence in the virtual machine migration sequence, the operation of migrating a plurality of virtual machines to a target physical host machine is sequentially executed according to the virtual machine migration sequence until the migration operation of all of the virtual machines is completed. The method and the device for realizing the virtual machine migration and the cluster system provided by the invention have the advantage that on the premise of ensuring the migration reliability of the virtual machines, the high efficiency and the safety of the virtual machine images in the cluster system are guaranteed.

Description

technical field [0001] The invention relates to the field of computer information technology, in particular to a method, device and cluster system for realizing virtual machine migration. Background technique [0002] A virtual machine refers to a complete computer system that is simulated by software and has complete hardware system functions and runs in a completely isolated environment. Through virtual machine software, you can simulate one or more virtual computers on a physical computer. These virtual machines work exactly like real computers. For example, you can install operating systems, install applications, and access networks. resources and more. To you, it's just an application running on your physical computer, but to applications running in a virtual machine, it's a real computer. [0003] Shared storage refers to multiple servers accessing the same partition of the same storage device, and the system allows multiple users to share the same file. To solve th...

AI Technical Summary

Problems solved by technology

[0006] However, a virtual machine has resources such as CPU and memory when it is created, and it occupies the CPU and memory resources of the physical host. If you simply specify the migration target host, especially when there are multiple virtual machines on the physical host that needs to be migrated, it will lead to migration The virtual machine task fails, or the performance of the virtual machine degrades after migration, resulting in unstable operation of the cluster system

[0007] Therefore, for the existing technology, if there is no good migration strategy, when multiple virtual machines on the physical host need to be migrated, it cannot be guaranteed that all the virtual machines will be migrated successfully, which will lead to a decline in the performance of all or part of the virtual machines after migration and unstable

Images