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Mastering KVM Virtualization

Mastering KVM Virtualization

4.2 (16)
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Mastering KVM Virtualization

Mastering KVM Virtualization

4.2 (16)

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 (17 chapters)
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16
Index

Overlay networks


Overlay networks are industry-standard techniques designed to achieve Network Virtualization. Network Overlays such as Virtual eXtensible Local Area Network (VXLAN) and Generic Routing Encapsulation (GRE) achieve network virtualization by overlaying layer-2 networks over physical layer-3 networks, which enables network scalability and the efficient use of current network infrastructure.

Open vSwitch supports multiple tunneling protocols (GRE, VXLAN, STT, and Geneve, with IPsec support), which allow scaling private networks over public networks. You can connect two or more Open vSwitches running on different hosts with each other and form a distributed switch.

Use Case of overlay networks: Suppose you have an application cluster (five VMs serving as nodes) on the KVM1-Mumbai-DC host, The cluster is architectured on a private network that is isolated to the host, The recent growth of your application requires more nodes on the cluster but you found there is no scope to create...

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