KVM

KVM (Kernel-based Virtual Machine) is an open-source virtualization solution for Linux that allows users to run multiple virtual machines efficiently.

Description

KVM, or Kernel-based Virtual Machine, is an open-source full virtualization solution for Linux on x86 hardware. It leverages hardware virtualization extensions (Intel VT or AMD-V) and comprises a loadable kernel module (kvm.ko) providing core virtualization infrastructure, along with processor-specific modules (kvm-intel.ko or kvm-amd.ko). KVM allows users to run multiple virtual machines, each with private virtualized hardware (network card, disk, graphics adapter, etc.), executing unmodified Linux or Windows images. The core KVM components are included in mainline Linux (since 2.6.20) and QEMU (since 1.3). It offers a robust and flexible environment for various virtualization needs.

Features

KVM is characterized by its full virtualization capabilities, supporting unmodified guest operating systems such as Linux and Windows. It is an open-source solution, ensuring community-driven development and broad support. KVM utilizes hardware-assisted virtualization to improve performance and efficiency. Its architecture involves a loadable kernel module integrating seamlessly with the Linux kernel. It works alongside virtualization management tools like QEMU and libvirt, simplifying the creation, management, and operation of virtual machines. KVM supports various features such as virtual networking, storage, and device emulation.

Benefits

KVM provides significant benefits, including efficient resource utilization by leveraging hardware virtualization, enabling the running of multiple operating systems simultaneously on a single physical machine. It enhances system security by isolating applications and workloads, thereby preventing interference and enhancing data privacy. KVM's open-source nature promotes community development and support, providing access to a vast pool of knowledge, resources, and extensions. It is also highly scalable and cost effective, particularly when compared to proprietary solutions. Additionally, it offers improved system manageability through tools like libvirt, allowing for easier deployment, monitoring and management of virtual machines.

Links

• Home: https://www.linux-kvm.org/