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• Using Xen With LVM-Based VMs Instead Of Image-Based VMs (Debian Etch)

  Author: Falko Timme • Tags: debian, virtualization, xen • Comments: 2

  Using Xen With LVM-Based VMs Instead Of Image-Based VMs (Debian Etch) This guide explains how you can set up LVM-based virtual machines on a Xen host running on Debian Etch instead of virtual machines that use disk images. Virtual machines that use disk images are very slow and heavy on disk IO.

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• How To Convert Physical Systems And Xen VMs Into OpenVZ Containers (Debian Etch)

  Author: Falko Timme • Tags: debian, openvz, virtualization, xen • Comments: 10

  How To Convert Physical Systems And Xen VMs Into OpenVZ Containers (Debian Etch) This guide explains how you can convert physical systems (running Debian Etch) or Xen domUs (also running Debian Etch) into an OpenVZ container. This procedure should also work for converting VMware VMs, VirtualBox VMs, or KVM VMs into OpenVZ containers, but I haven't tried this. It should work for other Linux distributions as well, with minor modifications (for example, the network configuration is not located in /etc/network/interfaces if you're not on Debian/Ubuntu).

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• Splitting Resources Evenly Between OpenVZ VMs With vzsplit

  Author: Falko Timme • Tags: openvz, virtualization • Comments: 0

  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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• Managing OpenVZ With HyperVM On CentOS 5.2

  Author: Falko Timme • Tags: centos, openvz, virtualization • Comments: 11

  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").

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• Virtualization With Xen On Debian Lenny (AMD64)

  Author: Falko Timme • Tags: debian, virtualization, xen • Comments: 9

  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.

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• KVM Guest Management With Virt-Manager On Ubuntu 8.10

  Author: Falko Timme • Tags: desktop, kvm, ubuntu, virtualization • Comments: 4

  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.

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• Virtualization With Xen 3.3.1 On Debian Etch

  Author: Falko Timme • Tags: debian, virtualization, xen • Comments: 2

  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.

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• Installing Windows XP As A KVM Guest On Ubuntu 8.10 Desktop

  Author: Falko Timme • Tags: virtualization, ubuntu, desktop, kvm • Comments: 7

  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.

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• Back Up LVM XEN Guest Containing LVs

  Author: chriscowley • Tags: backup, virtualization, xen • Comments: 4

  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.

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• KVM & OpenVZ Virtualization And Cloud Computing With Proxmox VE

  Author: Falko Timme • Tags: control panels, kvm, openvz, virtualization • Comments: 5

  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.

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