Book Image

KVM Virtualization Cookbook

By : Konstantin Ivanov
Book Image

KVM Virtualization Cookbook

By: Konstantin Ivanov

Overview of this book

Virtualization technologies such as KVM allow for better control over the available server resources, by deploying multiple virtual instances on the same physical host, or clusters of compute resources. With KVM it is possible to run various workloads in isolation with the hypervisor layer providing better tenant isolation and higher degree of security. This book will provide a deep dive into deploying KVM virtual machines using qemu and libvirt and will demonstrate practical examples on how to run, scale, monitor, migrate and backup such instances. You will also discover real production ready recipes on deploying KVM instances with OpenStack and how to programatically manage the life cycle of KVM virtual machines using Python. You will learn numerous tips and techniques which will help you deploy & plan the KVM infrastructure. Next, you will be introduced to the working of libvirt libraries and the iPython development environment. Finally, you will be able to tune your Linux kernel for high throughput and better performance. By the end of this book, you will gain all the knowledge needed to be an expert in working with the KVM virtualization infrastructure.
Table of Contents (15 chapters)
Title Page
About the Author
About the Reviewer
Customer Feedback

Installing and configuring the OpenStack Nova compute service

The OpenStack Compute service, code named Nova, manages a pool of compute resources and the virtual machines running on them. Nova is a suite of services to create and manage the lifecycle of virtual machines. We will use Nova to create, examine, stop, delete, and migrate KVM instances.


For more information on the various Nova services, refer to:

In this recipe, we are going to install and configure the following Nova components:

  • nova-api: This is the service that accepts and responds to user requests through a RESTful API. We will use it when creating, running, stopping, and migrating KVM instances.
  • nova-scheduler: This is the service that makes decisions on where to provision instance, based on filters, such as available memory, disk, and CPU resources.
  • nova-compute: This is the service that runs on the compute hosts and is responsible for managing the lifecycle of the KVM instance,...