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This tutorial assumes database server for the tracker is already up and running on a same or another machine. The tutorial based on RHEL 4 Install Guide and another one guide slightly modified to conform CentOS 5 / RHEL 5 changes and facilitate software installation. Apache2/mod_perl2 with RT 3.8 are used in the tutorial. You may want to review Manual Installation Requirements and Manual Installation to get a grip of the installation process.

Perform a standard install of CentOS 5 or RHEL 5. Enable "centosplus" repository in the /etc/yum.repos.d/CentOS-Base.repo. Download and install RPMforge distribution.

Recently we at BHOST.RU were deploying VPS and DDS hosting and I conducted some Xen tests on our amd64 boxes. General impression is: it works fine and stable enough for production use.

Xen is a so-called virtual machine monitor. It's able to run VMs in both paravirtualization (when guest OS core modified to communicate with host OS) and hardware virtualization (guest OS runs unmodified and virtualization handled by a virtualization-compatible CPU) modes. Xen is open-source, but there are also commercial VMMs in the market - Microsoft Virtual Server and VMWare Server.

We run Xen on quad core Inte Core2 servers under a CentOS 5 Linux (it's actually free RHEL build, but it's an open secret). Also we have an Intel Xeon 5120 server for our internal needs, it works just the same.