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 7: Virtual Machines: Installation, Configuration, and Life Cycle Management

In this chapter, we will discuss different ways of installing and configuring virtual machines (VMs)—from Command Prompt and/or a graphical user interface (GUI). We will delve deeper into some tools and utilities that we have already used (virt-manager, virt-install, oVirt) and build upon our knowledge gained from previous chapters. Then, we will have a lengthy discussion about VM migration, one of the most fundamental aspects of virtualization, as it's pretty much unimaginable to use virtualization without migration options. To be able to configure our environment for VM migration, we will also use topics discussed in Chapter 4, Libvirt Networking, and Chapter 5, Libvirt Storage, as there are pre-requisites that need to be met for VM migration to work.

In this chapter, we will cover the following topics:

  • Creating a new VM using virt-manager, using virt commands
  • Creating...