Book Image

Getting Started with oVirt 3.3

By : Alexey Lesovsky
Book Image

Getting Started with oVirt 3.3

By: Alexey Lesovsky

Overview of this book

<p>Virtualization technologies are evolving very rapidly. With advanced capabilities for hosts and guests including high availability, live migration, storage management, system scheduler, and many more, oVirt comes with the latest advancements in the field of open source virtualization. oVirt is built on the powerful Kernel-based Virtual Machine (KVM) hypervisor and on the RHEV-M management server, and it allows you to utilize the most advanced capabilities of virtualization in an easy and efficient way.</p> <p>Getting Started with oVirt 3.3 talks you through the internal structure and working of oVirt 3.3 using a practical, hands-on approach. You will learn how to install and set up your own virtualization infrastructure as well as in what order you should configure your virtualization environment, what features oVirt has, and how to use them. You will also learn how easy it is to create cluster policies to control the operation of a cluster as well as how to create and use a virtual machine template.</p> <p>With this book, you will learn how to run your own data centers in different configurations and about the existing opportunities for creating virtual machines. You will perform the re-balancing of clusters and quickly create dozens of virtual machines. This book will also help you create a network environment and set policies for QoS. You will also learn how to manage users and allocate resources between them. Getting Started with oVirt 3.3 teaches you everything you need to know about oVirt 3.3 and shows you how to get the most out of the technology quickly and effectively.</p>
Table of Contents (15 chapters)

High availability


High availability is the ability to restart virtual machines on other physical nodes in the event of a hardware failure or scheduled scenarios, which will be described in a moment. The configuration of high availability is accessible only for virtual machines that are allowed to perform automatic migration. It is recommended to configure high availability for virtual machines running mission-critical tasks. High availability ensures that the virtual machine will be restarted in the following scenarios:

  • When the virtualization host becomes nonoperational as a consequence of a hardware failure

  • When the virtualization host goes into maintenance mode for scheduled downtime

  • When the communication between the host and external storage or between hosts is lost

  • When the virtual machine is no longer available due to a failure of the virtual guest operating system.

With a highly available VM, service downtime is reduced to a minimum since the virtual machine will restart automatically...