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

Creating logical networks


As explained earlier, logical networks are nothing but the bridges configured on the oVirt nodes. They are created in order to segregate the traffic. For example, if you use the ovirtmgmt logical network for every purpose, including the VM traffic, which includes live migration traffic, display traffic, and so on, it can choke the bandwidth. Therefore, we create multiple logical networks using different NICs based on the VM traffic and purpose. To create a logical network, follow these steps:

  1. Go to the Network tab and click on New Logical Network.

  2. Select your Data Center and enter a name for the logical network. Here, it is vmdata.

  3. Make sure that the VM network option is enabled and click on OK, otherwise it will create a non-bridge interface, which can only be used for VM live migration or to display network traffic.

    fig 11-17

Once the logical network is created, you have to apply that logical network to each host. If this step is not done, your host status will change...