Virtualization in Linux

Three main virtualization approaches - emulation, paravirtualization, and operating system-level virtualization - are covered, followed by the implementation examples, comparison of the technologies and their applications. OS-level virtualization is described in detail, with examples from OpenVZ. The main kernel components (Isolation and virtualization, resource management, checkpointing and live migration) and user-level tools are also explained. Typical usage scenarios of virtualization solutions are presented.