Book Image

Mastering KVM Virtualization

Book Image

Mastering KVM Virtualization

Overview of this book

A robust datacenter is essential for any organization – but you don’t want to waste resources. With KVM you can virtualize your datacenter, transforming a Linux operating system into a powerful hypervisor that allows you to manage multiple OS with minimal fuss. This book doesn’t just show you how to virtualize with KVM – it shows you how to do it well. Written to make you an expert on KVM, you’ll learn to manage the three essential pillars of scalability, performance and security – as well as some useful integrations with cloud services such as OpenStack. From the fundamentals of setting up a standalone KVM virtualization platform, and the best tools to harness it effectively, including virt-manager, and kimchi-project, everything you do is built around making KVM work for you in the real-world, helping you to interact and customize it as you need it. With further guidance on performance optimization for Microsoft Windows and RHEL virtual machines, as well as proven strategies for backup and disaster recovery, you’ll can be confident that your virtualized data center is working for your organization – not hampering it. Finally, the book will empower you to unlock the full potential of cloud through KVM. Migrating your physical machines to the cloud can be challenging, but once you’ve mastered KVM, it’s a little easie.
Table of Contents (22 chapters)
Mastering KVM Virtualization
Credits
About the Authors
About the Reviewers
www.PacktPub.com
Preface
Index

Virtual networking using libvirt


In the previous chapter, we introduced you to some of the available options of virtual networking in libvirt. In this chapter, we will revisit them again in detail.

The types of virtual networking available are as follows:

  • Isolated virtual network

  • Routed virtual network

  • NATed virtual network

  • Bridged network using a physical NIC, VLAN interface, bond interface, and bonded VLAN interface

  • MacVTap

  • PCI passthrough NPIV

  • OVS

Additionally, we will cover the details of enabling DHCP and DNS for your virtual network and the Default virtual network that comes preconfigured with libvirt.

Before starting, let's go back to Chapter 3, Setting Up Standalone KVM Virtualization, and create one more Linux virtual machine. This is required to do the hands on.

Isolated virtual network

As the name suggests, we we are creating a closed network for the virtual machines. In this configuration, only the virtual machines which are added to this network can communicate with each other:

As you can...