Secure live migration of VM's in Cloud Computing: A survey

Cloud Computing is a computing model which provide IT services, that could be found at everywhere at any time with Internet access. IT users can access these services dynamically over Internet by application software's like web browser and mobile app. Virtualization is the main key concept that is used in cloud computing to manage data centers and IT infrastructure. The necessary requirements to implement data centers which are based on cloud environments are remarkable deal of flexibility, availability and reliability. Virtualization technology can provide these kinds of services by live migration. Live migration allows flexibly transfer of virtual machine from one physical server to another physical server without obstructing the services running in virtual machine. In this survey, we studied the requirements of virtualization in cloud computing, live migration of virtual machine and security risks in live migration when transferring a virtual machine from one system server to another server. We discuss the security risks in virtual machine migration and solution approaches which are isolating the migration traffic, network security engine-hypervisor, and role based migration.