Virtualization

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Installing Xen 3.3 With Kernel 2.6.27 On Ubuntu 8.10 (x86_64)

Installing Xen 3.3 With Kernel 2.6.27 On Ubuntu 8.10 (x86_64)

This tutorial shows how you can install Xen 3.3 on an Ubuntu 8.10 host (dom0). Xen 3.3 is available from the Ubuntu 8.10 repositories, but the Ubuntu 8.10 kernels (2.6.27-x) are domU kernels, i.e., they work for Xen guests (domU), but not for the host (dom0). Therefore we need to build our own dom0 kernel. This guide explains how to do this with a 2.6.27 kernel.

How To Force virt-manager To Use kqemu On Fedora 10

How To Force virt-manager To Use kqemu On Fedora 10

When you use virt-manager to create and manage virtual machines using QEMU as hypervisor you may notice a poor performance on a no virtualization capable processor; this is because by default libvirt (an opensource virtualization API for Xen, KVM, Qemu) ignores the kqemu module (qemu acceleration kernel module). This mini-howto tries to workaround this problem.

KVM & OpenVZ Virtualization And Cloud Computing With Proxmox VE

KVM & OpenVZ Virtualization And Cloud Computing With Proxmox VE

Proxmox VE (virtual environment) is a distribution based on Debian Etch (x86_64); it provides an OpenSource virtualization platform for running virtual machines (OpenVZ and KVM) and comes with a powerful, web-based control panel (it includes a web-based graphical console that you can use to connect to the virtual machines). With Proxmox VE, you can even create a cluster of virtualization hosts and create/control virtual machines on remote hosts from the control panel. Proxmox VE also supports live migration of virtual machines from one host to the other. This guide shows how you can use Proxmox VE to control KVM and OpenVZ virtual machines and how to create a small computing cloud with it.

Back Up LVM XEN Guest Containing LVs

Back Up LVM XEN Guest Containing LVs

In my day-job all our Linux boxes (bar 3) are Xen VMs. I wanted a way to take a backup of these with out the risk of the files changing underneath. For performance reasons I am running all of them on Logical Volumes.Within these VMs the DomU OS is once again using LVM for various reasons. This does create some headaches for taking the backup.

Installing Windows XP As A KVM Guest On Ubuntu 8.10 Desktop

Installing Windows XP As A KVM Guest On Ubuntu 8.10 Desktop

There's a bug in virt-install and virt-manager on Ubuntu 8.10 that does not let you run Windows XP as a guest under KVM. During the Windows installation, the guest needs to be rebooted, and then you get the following error, and Windows XP refuses to boot: "A disk read error occured. Press Ctrl+Alt+Del to restart". This guide shows how you can solve the problem and install Windows XP as a KVM guest on Ubuntu 8.10.

Virtualization With Xen 3.3.1 On Debian Etch

Virtualization With Xen 3.3.1 On Debian Etch

This tutorial provides step-by-step instructions on how to install Xen on a Debian Etch (4.0) system. Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.

KVM Guest Management With Virt-Manager On Ubuntu 8.10

KVM Guest Management With Virt-Manager On Ubuntu 8.10

Virt-Manager (Virtual Machine Manager) is a graphical interface for managing KVM and Xen guests on the local and also on remote systems. You can use it to start, stop, pause, create, and delete guests, and you can connect to the guests using the graphical console. This guide shows how you can use it to manage KVM guests on an Ubuntu 8.10 desktop.

Virtualization With Xen On Debian Lenny (AMD64)

Virtualization With Xen On Debian Lenny (AMD64)

This tutorial provides step-by-step instructions on how to install Xen on a Debian Lenny (5.0) system (AMD64). Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.

Managing OpenVZ With HyperVM On CentOS 5.2

Managing OpenVZ With HyperVM On CentOS 5.2

HyperVM is a multi-platform, multi-tiered, multi-server, multi-virtualization web based application that will allow you to create and manage different virtual machines each based on different technologies across machines and platforms. Currently it supports OpenVZ and Xen virtualization and is available for RHEL 4/5 as well as CentOS 4 and CentOS 5. This tutorial shows how to install it on a CentOS 5.2 server to control OpenVZ containers. I will also explain how to manage OpenVZ containers with HyperVM on a remote CentOS 5.2 server ("slave").

Splitting Resources Evenly Between OpenVZ VMs With vzsplit

Splitting Resources Evenly Between OpenVZ VMs With vzsplit

This short guide shows how you can split your OpenVZ host resources evenly between multiple virtual machines with the help of vzsplit. vzsplit generates a sample container configuration file with a certain set of system resource control parameters that you can then apply to your virtual machines.

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