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 3: Installing KVM Hypervisor, libvirt, and oVirt

This chapter provides you with an insight into the main topic of our book, which is the Kernel Virtual Machine (KVM) and its management tools, libvirt and oVirt. We will also learn how to do a complete installation of these tools from scratch using a basic deployment of CentOS 8. You'll find this to be a very important topic as there will be situations where you just don't have all of the necessary utilities installed – especially oVirt, as this is a completely separate part of the overall software stack, and a free management platform for KVM. As oVirt has a lot of moving parts – Python-based daemons and supporting utilities, libraries, and a GUI frontend – we will include a step-by-step guide to make sure that you can install oVirt with ease.

In this chapter, we will cover the following topics:

  • Getting acquainted with QEMU and libvirt
  • Getting acquainted with oVirt
  • Installing...