Research And Implementation Of Automatic Live Migration Of Virtual Machines Based On WAN

Live migration enables virtual machines to move between different hardware resources, so data center management owns capabilities of resource sharing, resource scheduling, disaster recovery, dynamic integration. At this stage, research in live migration is usually limited to a local area network, does not apply to multiple LANs geographically widespread.In this paper, based on the traditional live migration of virtual machine technology, balancing and disaster problem in WAN is researched, namely how to achieve a virtual machine live migration between LAN, as well as according to the load automatically migrate virtual machines to achieve remote disaster recovery and load balanced. The main research work includes:Paper summarizes the current development of the virtual machine system, in-depth study of the basic principles and key technologies of virtual machine system, focusing on the Xen virtual machine live migration mechanism combined with the source code. After analyzing the core ideas and key technological of live migration in LAN, combined with the actual needs of disaster recovery, the paper applied the live migration of virtual machine technology to disaster recovery operations. On the basis of the virtual platform module study, after analyzing the limitations of the traditional virtual machine migration, designed architecture of virtual machine live migration in WAN, proposed the establishment VPN(Virtual Private Network, Virtual Private Channel) between LANs to break the boundaries between multiple LANs, so that virtual machine not in the same physical LAN logically in the same LAN, using its technology to ensure perfect safety between multiple LANs, provide effective solutions for live migration of virtual machines between LANs.On the other hand, for the current virtual machine migration mainly initiated manually, transfer mechanism is not independent and real-time, the paper proposed a method to migrate automatically based on load usage. Through monitoring the server workload, determine the server’s operating status according to its load, and then automatic virtual machine migration, so that migration can be independent and real-time in the migration process, to achieve automatic dynamic migration of virtual machines in WAN.