Book Image

Mastering KVM Virtualization - Second Edition

By : Vedran Dakic, Humble Devassy Chirammal, Prasad Mukhedkar, Anil Vettathu
Book Image

Mastering KVM Virtualization - Second Edition

By: Vedran Dakic, Humble Devassy Chirammal, Prasad Mukhedkar, Anil Vettathu

Overview of this book

Kernel-based Virtual Machine (KVM) enables you to virtualize your data center by transforming your Linux operating system into a powerful hypervisor that allows you to manage multiple operating systems with minimal fuss. With this book, you'll gain insights into configuring, troubleshooting, and fixing bugs in KVM virtualization and related software. This second edition of Mastering KVM Virtualization is updated to cover the latest developments in the core KVM components - libvirt and QEMU. Starting with the basics of Linux virtualization, you'll explore VM lifecycle management and migration techniques. You’ll then learn how to use SPICE and VNC protocols while creating VMs and discover best practices for using snapshots. As you progress, you'll integrate third-party tools with Ansible for automation and orchestration. You’ll also learn to scale out and monitor your environments, and will cover oVirt, OpenStack, Eucalyptus, AWS, and ELK stack. Throughout the book, you’ll find out more about tools such as Cloud-Init and Cloudbase-Init. Finally, you'll be taken through the performance tuning and troubleshooting guidelines for KVM-based virtual machines and a hypervisor. By the end of this book, you'll be well-versed with KVM virtualization and the tools and technologies needed to build and manage diverse virtualization environments.
Table of Contents (22 chapters)
1
Section 1: KVM Virtualization Basics
4
Section 2: libvirt and ovirt for Virtual Machine Management
11
Section 3: Automation, Customization, and Orchestration for KVM VMs
15
Section 4: Scalability, Monitoring, Performance Tuning, and Troubleshooting

Chapter 1: Understanding Linux Virtualization

Virtualization is the technology that started a big technology shift toward IT consolidation, which provides more efficient use of resources and the cloud as a more integrated, automated, and orchestrated version of virtualization with a focus on not only virtual machines but also additional services. There are a total of 16 chapters in this book, all of which have been lined up to cover all the important aspects of Kernel-based Virtual Machine (KVM) virtualization. We will start with basic KVM topics such as the history of virtualization concepts and Linux virtualization and then move on and look at advanced topics in KVM such as automation, orchestration, virtual networking, storage, and troubleshooting. This chapter will provide you with an insight into the prevailing technologies in Linux virtualization and their advantages over others.

In this chapter, we will cover the following topics:

  • Linux virtualization and its basic concepts
  • Types of virtualization
  • Hypervisor/VMM
  • Open source virtualization projects
  • What Linux virtualization offers you in the cloud