libvirt creates a separate xml file for each of your virtual machines. On my Ubuntu server profiles of my kvm machines are stored in the /etc/libvirt/qemu folder. Boot media for your virtual machine is defined inside the os element. Below you can see an extract from one of my virtual machine.  <os>     <type arch=’i686′ [...]

Today we will build a TorrentFlux appliance. This appliance is one of my early works. support

If you followed our article series over Ideal Virtualization Solution Using Ubuntu, you suppose to have an up and running KVM based Virtualization Host. Now we will start with actual work. We will start to build and out-roll virtual appliances. Our first appliance will be the repository server. This machine will act like a proxy [...]

virsh is a command line management interface for your virtual machines. Using this program you can manage your local or remove virtual machines. virsh application comes with several commands and options, but for your day to day work you will be using small set of them. service

At our previous article ”Installing Ubuntu KVM Virtualization Host” we have installed a Virtualization Host. Actually standard installation already made some network configurations for us. As you can see below our virtualization host has a bridge network virbr0. This bridge network will be used by our virtual machines and they will receive an IP number from [...]

Lets start with the requirements. Does our system support KVM? KVM requires a cpu with virtualization support. You need a cpu with INTEL-VT or AMD-V support. With following command you can check if your cpu supports one of the virtualization techniques : egrep ‘(vmx|svm)’ /proc/cpuinfo If you don’t see anything it is a pitty but  [...]

As of 8.04 Hardy Heron release Ubuntu introduced several nice tools and features for Virtualization. Build-in support for KVM Ubuntu Server Edition JeOS (Just enough OS) JeOS is a specialised installation of Ubuntu Server Edition with a tuned kernel that only contains the base elements needed to run within a virtualized environment vm-builder ubuntu-virt-server ( [...]

I am using ubuntu vm-builder for out-rolling new virtual machines. On my new host I got this “mount: could not find any free loop device” error message. Obviously vm-builder used all of my loop back devices and it needs even more. So I need increase the number of loop devices. store

If you have KVM kernel modules installed on your system then you would get following error message when you try to start VirtualBox. VirtualBox can’t operate in VMX root mode. Please disable the KVM kernel extension, recompile your kernel and reboot. VBox status code: -4011 (VERR_VMX_IN_VMX_ROOT_MODE). Result Code: 0×80004005 Component: Console Interface: IConsole {d5a1cbda-f5d7-4824-9afe-d640c94c7dcf} Solution [...]

I am building KVM appliances based on Ubuntu 8.1 JeOS version but they don’t accept ACPI events. I can not reboot them using virsh. After doing some investigation it turned out that acpid package is not part of the base installation. To be able to send reboot requests you need to include acpid package in [...]