2008-09-28 09:00:03
An OS Template is what OpenVZ uses as install media so you may install a Linux distribution into a container... since you cannot use a traditional CD-ROM / DVD nor .iso disk image. An OS Template is a .tar.gz file that represents a somewhat stripped down version of an installed Linux distribution as you would find it installed on a disk filesystem. So, if you want to create a CentOS 5.2 i386 container, you need to find an CentOS 5.2 i386 OS Template.

There are a number of recipes on the OpenVZ wiki for building OS Templates for various Linux distributions but the general process takes several steps and is quite a bit of work. Any tool that can simplify the creation (and updating) of an OS Template is a welcome addition. 

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