How to install kvm and kvm manager on ubuntu desktop 15

KVM Tools Installation

Before you proceed with the installation you must confirm that your system supports KVM. As mentioned earlier, it requires hardware virtualization support in the CPU. Type in the following command to check the compatibility:

#egrep -c '(vmx|svm)' /proc/cpuinfo

If the output is 0, then KVM won't work as the system does not support VMX nor SVM hardware virtualization. If the output is 1 or greater than 1 it means your system is all set and ready to go for KVM installation.

Run the following commands to install KVM:

#sudo apt-get install qemu-kvm libvirt-bin ubuntu-vm-builder bridge-utils

The above command includes installation of 4 packages kvm, libvirt-bin, ubuntu-vm-builder and bridge-utils. You are done with the installation for now. Just make sure your Ubuntu username is addded to the group libvirtd by typing:

#sudo adduser `id -un` libvirtd

In the next step, I will install a GUI tool for ubuntu which makes the process of setting up a VM easier.

Create bridge interface

#vim /etc/network/interface

edit to this:

#interfaces(5) file used by ifup(8) and ifdown(8)
#auto lo
#iface lo inet loopback

# Enabing Bridge networking br0 interface
auto br0
iface br0 inet static
address 10.105.6.236
netmask 255.255.255.240
gateway 10.105.6.225
dns-nameservers 110.74.194.10
dns-nameservers 8.8.8.8
bridge_ports enp2s0
bridge_stp off

Save exit and reboot.

Installing a graphical user interface for KVM

Install the virt-manager application with apt..

#sudo apt-get install virt-manager

Creating a KVM guest machine

After you have installed virt-manager just go ahead and start it by typing:

#virt-manager

Now we have interface for setup.

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Trobleshooting:

#vim /etc/libvirt/qemu.conf
-uncommand:
user = root
group = root

#/etc/init.d/libvirt-bin restart

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