Virtualization

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Paravirtualization With Xen On CentOS 5.4 (x86_64)

Paravirtualization With Xen On CentOS 5.4 (x86_64)

This tutorial provides step-by-step instructions on how to install Xen (version 3.0.3) on a CentOS 5.4 (x86_64) 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.

How To Enable Networking In Xen Guests On Hetzner's DS Servers (Debian Etch)

How To Enable Networking In Xen Guests On Hetzner's DS Servers (Debian Etch)

This tutorial shows how you can enable networking in Xen guests (domU) on Hetzner's DS servers. With the DS servers, you can get a subnet of eight additional IPs (or more) - usually that subnet is different from the subnet that the server's main IP is from. The problem is that these additional IPs are bound to the MAC address of the host system (dom0) - Hetzner's routers will dump IP packets if they come from an unknown MAC address. This means we cannot use Xen's bridged mode, but must switch to Xen's routed mode where the host system (dom0) acts as the gateway for the guests.

How To Enable Networking In Xen Guests On Hetzner's New EQ Servers (Debian Lenny)

How To Enable Networking In Xen Guests On Hetzner's New EQ Servers (Debian Lenny)

This tutorial shows how you can enable networking in Xen guests (domU) on Hetzner's new EQ servers. With the new EQ servers, you can get up to three additional IPs that are in the same subnet as the server's main IP. The problem is that these additional IPs are bound to the MAC address of the host system (dom0) - Hetzner's routers will dump IP packets if they come from an unknown MAC address. This means we cannot use Xen's bridged mode, but must switch to Xen's routed mode where the host system (dom0) acts as the gateway for the guests.

Paravirtualized OpenSolaris 2008.11 domU Using Debian Lenny

Paravirtualized OpenSolaris 2008.11 domU Using Debian Lenny

This guide will help you to create an OpenSolaris paravirtualized Xen guest under Debian Lenny.

Installation And Setup Guide For DRBD, OpenAIS, Pacemaker + Xen On OpenSUSE 11.1

Installation And Setup Guide For DRBD, OpenAIS, Pacemaker + Xen On OpenSUSE 11.1

The following will install and configure DRBD, OpenAIS, Pacemaker and Xen on OpenSUSE 11.1 to provide highly-available virtual machines. This setup does not utilize Xen's live migration capabilities. Instead, VMs will be started on the secondary node as soon as failure of the primary is detected. Xen virtual disk images are replicated between nodes using DRBD and all services on the cluster will be managed by OpenAIS and Pacemaker. The following setup utilizes DRBD 8.3.2 and Pacemaker 1.0.4. It is important to note that DRBD 8.3.2 has come a long way since previous versions in terms of compatibility with Pacemaker. In particular, a new DRBD OCF resource agent script and new DRBD-level resource fencing features. This configuration will not work with older releases of DRBD.

VBoxHeadless - Running Virtual Machines With VirtualBox 2 On A Headless Debian Lenny Server

VBoxHeadless - Running Virtual Machines With VirtualBox 2 On A Headless Debian Lenny Server

This guide explains how you can run virtual machines with Sun xVM VirtualBox 2 on a headless Debian Lenny server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.

Installing Hyper-V Linux Integration Components On CentOS 5

Installing Hyper-V Linux Integration Components On CentOS 5

Microsoft has introduced together with Windows 2008 a new Hypervisor called Hyper-V. Initially Microsoft only supported Microsoft products and Novell Suse, but recently they added support for Red Hat Enterprise Linux. With this support it is also possible to install the components on CentOS.

Paravirtualized Gentoo 2009 domU Using Debian Lenny

Paravirtualized Gentoo 2009 domU Using Debian Lenny

This guide will help you to create gentoo paravirtualized xen guest under Debian Lenny. Since Gentoo 2008.0 release is deprecated, so we will use current gentoo stage.

VBoxHeadless - Running Virtual Machines With VirtualBox 3.0 On A Headless Fedora 11 Server

VBoxHeadless - Running Virtual Machines With VirtualBox 3.0 On A Headless Fedora 11 Server

This guide explains how you can run virtual machines with Sun VirtualBox 3.0 (released on June 30, 2009) on a headless Fedora 11 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.

Installing VMware Tools On Debian Lenny 5.0.2 With Gnome Desktop On ESX Server 3.5 Update 4

Installing VMware Tools On Debian Lenny 5.0.2 With Gnome Desktop On ESX Server 3.5 Update 4

From time to time, installing VMware Tools on a Linux guest will cause you some grief. While there are lots of howto's, usually they're for VMware Workstation. Here's one that works in Debian/Lenny 5.0.2 on ESX Server 3.5 Update 4.

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