How to Create Virtual Machines in Linux Using KVM (Kernel-based Virtual Machine) – Part 1

This tutorial discusses KVM introduction, deployment and how to use it to create virtual machines under RedHat based-distributions such as RHEL/CentOS7 and Fedora 21.

What is KVM?

KVM or (Kernel-based Virtual Machine) is a full virtualization solution for Linux on Intel 64 and AMD 64 hardware that is included in the mainline Linux kernel since 2.6.20 and is stable and fast for most workloads.

KVM Feautres

There are many useful features and advantages which you will gain when you use KVM to deploy your virtual platform. KVM hypervisor supports following features:

1. Over-committing : Which means allocating more virtualized CPUs or memory than the available resources on the system.
2. Thin provisioning : Which allows the allocation of flexible storage and optimizes the available space for every guest virtual machine.
3. Disk I/O throttling : Provides the ability to set a limit on disk I/O requests sent from virtual machines to the host machine.
4. Automatic NUMA balancing : Improves the performance of applications running on NUMA hardware systems.
5. Virtual CPU hot add capability : Provides the ability to increase processing power as needed on running virtual machines, without downtime.

This is our first on-going KVM (Kernel-based Virtual Machine) series, here we will going to cover following articles in part wise fashion.

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