Archive for the ‘Virtualization’ category

Rename a Vserver step by step

January 6th, 2010

Suppose you made a mistake on the Vserver name when creating it. After finished the installation, you might want to rename your Vserver. This can be accomplished by renaming the config directory and the root for the vserver in question, then modifying some symlinks to match. » Read more: Rename a Vserver step by step

Avoid IP conflicts in Xen DomU

November 12th, 2009

Recently I’m playing with Xen virtualization, and I came across one protential problem. As I need to share my guest machines to clients,  I must give them root privileges… that’s whats VPS-es all about… having root access to OS without having to purchase expensive physical ones.  So having that in mind they are by default untrusted and unpredictable. Probably only god knows what they will do on their VMs! » Read more: Avoid IP conflicts in Xen DomU

Install Windows XP in Xen CentOS

October 17th, 2009

In a former post, we know how to use OpenVZ to create virtual system in CentOS, this article will show you how to install Windows under Xen on CentOS 5.3.

We fixed one of the problems of Windows XP under Xen. Windows XP’s inability to shut itself down completely. Windows ends up on the ‘it is safe to turn off your computer’ screen, but the virtual machine is not destroyed. See XenWindowsACPI for a summary. » Read more: Install Windows XP in Xen CentOS

OpenVZ On CentOS 5.4 installation and configuration

October 14th, 2009

This article will describe how to create OpenVZ container in CentOS 5.4. With OpenVZ you can create multiple Virtual Private Servers (VPS) on same hardware machine and running them simultaneously and efficiently.

OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution widely used by hosting providers. The OpenVZ kernel patch is licensed under GPL license, and the user-level tools are under the QPL license.
» Read more: OpenVZ On CentOS 5.4 installation and configuration

How to run 32bit application under x64 system

September 11th, 2009

Sometimes you do not have access to source code or you really do not want to compile the code. Then Red Hat Enterprise Linux provides the service called ia32el. The ia32el package contains IA-32 Execution Layer platform which allows emulation of IA-32 binaries on IA-64.(i.e. it allows to run 32-bit applications through the use of Intel’s IA-32 Execution Layer). The IA-32 Execution Layer and 32-bit compatibility packages provide a runtime environment for 32-bit applications on the 64-bit native RedHat Linux distribution. » Read more: How to run 32bit application under x64 system

Redhat and AMD migrate VMs across CPUs

September 8th, 2009

AMD and REDHAT have just done the so called impossible, and demonstrated VM live migration across CPU architectures. Not only that, they have demonstrated it across CPU vendors, potentially commoditising server  processors. Eeek! » Read more: Redhat and AMD migrate VMs across CPUs