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Mastering KVM Virtualization

Mastering KVM Virtualization

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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

Getting acquainted with libvirt and its implementation


As discussed in a previous chapter, there is an extra management layer called libvirt which can talk to various hypervisors (for example: KVM/QEMU, LXC, OpenVZ, UML, and so on) underlying it. libvirt is an open source Application Programming Interface (API). At the same time, it is a daemon and a management tool for managing different hypervisors as mentioned. libvirt is in use by various virtualization programs and platforms; for example, graphical user interfaces are provided by GNOME boxes and virt-manager (http://virt-manager.org/). Don't confuse this with virtual machine monitor/VMM which we discussed in Chapter 1, Understanding Linux Virtualization.

The command line client interface of libvirt is the binary called virsh. libvirt is also used by other higher-level management tools, such as oVirt (www.ovirt.org):

Most people think that libvirt is restricted to a single node or local node where it is running; it's not true. libvirt...

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