Step by Step KVM Installation on Ubuntu

Step by step instruction as document and video is available in this article.

Does your machine actually support virtualization?

KVM only works if your CPU has hardware virtualization support – either Intel VT-x or AMD-V.
To determine whether our CPU includes these features, run the following command:

root@ubuntu:~$ egrep '(svm|vmx)' /proc/cpuinfo

If the output from your machine is similar to the below output then we're good to go.

Install KVM on Ubuntu using apt-get

we now need to install some packages using the apt-get as below.

root@ubuntu:~$ sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils

Verifying the KVM Installation:

We can test if your install has been successful with the following command:

root@ubuntu:~$ virsh -c qemu:///system list
Id Name State
----------------------------------------------------

Sometime You may face some issue. if so, just using the below fixes.

root@ubuntu:~$ virsh -c qemu:///system list
libvir: Remote error : Permission denied
error: failed to connect to the hypervisor
root@ubuntu:~$

you probably want to fix this before you move on. The critical point here is whether or not you have write access to /var/run/libvirt/libvirt-sock.

The sock file should have full permissions, so give full permission to the file.

Install virt-manager (graphical user interface)

If you are working on a desktop computer you might want to install a GUI tool to manage virtual machines.

root@ubuntu:~$ sudo apt-get install virt-manager

Virtual Machine Manager will appear in Applications -> System Tools menu. First create a new connection to local QEMU instance from File -> Add Connection menu. Localhost (QEMU) or QEMU/KVM should appear in the virtual machine list.

When you open virt-manager, if you are getting any warning popup as some packages need to be install, just give "yes" to install.

Thats it, we are done with KVM installation on Ubuntu successfully.

We will explain you how to create a virtual machine on KVM in the upcoming article.

Related Content on Linux might be useful to you to improve your Linux Skills.

How to Configure IP Address on Ubuntu using Netplan
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How to Create LVM Partition in Linux – LVM Tutorial
Install & Configure Samba Server on Linux (RHEL7 / CentOS7)

How to Create LVM Snapshot Volume in Linux

How to Create and Delete Partitions using fdisk in Linux

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Step by Step KVM Installation on Ubuntu - 100% Working