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I would like to create several Ubuntu Server Virtual Machines using KVM to test and use. How do I create Virtual Machines using KVM?

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2 Answers 2

up vote 4 down vote accepted

If you do not already have KVM installed, you will need to do that. There is a kvm metapackage in the repos.

sudo apt-get install kvm

To create VMs the easy way, use virt-manager (available in the repos). It provides a nice GUI to walk you through it.

sudo apt-get install virt-manager

Keep in mind you can use virt-manager either on your local KVM server, or on a remote one. Once you have it fired up and pointed to the right KVM server, just click the "Create New Virtual Machine" button. The rest of it is fairly self-explanatory.

Also, if you want to use a bridged interface for KVM, follow my guide here: http://john.wesorick.com/2012/01/setting-up-bridged-network-interface.html

Bridged mode works better for any kind of networking on the virtual machine.

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Tis site has the answer Click Here

Below is the text from that site:

How to create virtual machines using KVM (Kernel-based Virtual Machine) Filed under: Linux, SysAdmin, Virtualization — acidborg @ 14:24

Description: KVM is a virtualization infrastructure included in the Linux kernel since 2.6.20 . Although it supports some kinds of paravirtualization, I’m going to explain how to create virtual machines /also called guests) using its full virtualization support.

Steps:

Check if your processor supports full virtualization (if either vmx or svm appears as a flag, then your processor supports it): egrep '(vmx|svm)' --color=always /proc/cpuinfo
Install the packages needed:
    Debian/Ubuntu: apt-get install kvm libvirt0 python-libvirt python-virtinst
    Red Hat/Fedora: yum install kvm libvirt libvirt-python python-virtinst
Configure a bridge (Debian/Ubuntu or Red Hat/Fedora) to use a single network interface for all your virtual machines.
Create the virtual machine (a RHEL 5 virtual machine in this example): virt-install --name=guest_name --arch=x86_64 --vcpus=1 --ram=512 --os-type=linux --os-variant=rhel5 --hvm --connect=qemu:///system --network bridge:br0 --cdrom=/var/lib/libvirt/images/rhel5-x86_64.iso --disk path=/mnt/virtual_machines/guest_name.img,size=20 --accelerate --vnc --noautoconsole --keymap=es
Explanation of the params:

    name: name of the guest.
    arch: architecture of the guest.
    vcpus: number of CPUs assigned to the guest.
    ram: MB of RAM assigned to the guest.
    os-type and os-variant: available options can be checked using man virt-install.
    hvm: use full virtualization.
    connect: connect to the hypervisor.
    network bridge: the bridge to use for the guest.
    cdrom: the ISO of the operating system to install.
    disk path=x,size=y: path and size of the image file for the guest.
    accelerate: make use of the KVM acceleration capabilities if available.
    vnc: export a virtual console over VNC to the guest.
    noautoconsole: Don’t automatically try to connect to the guest console.
    keymap: keyboard layout for the VNC console
Use a VNC client to connect to the guest (port 5900 or 5901 if you already have a VNC server listening on port 5900) and install the operating system.

I hope that it will help.

Source: http://acidborg.wordpress.com

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