Let's now look at JeOS and vmbuilder to build our own VM image.
JeOS, short for Just Enough Operation System, is pronounced as "Juice" and is an operating system in the Ubuntu flavor. It is specially built for running virtual applications. JeOS is no longer available as a downloadable ISO CD-ROM. However, you can pick up any of the following approaches:
Get a server ISO of the Ubuntu OS. While installing, hit F4 on your keyboard. You will see a list of items and select the one that reads Minimal installation. This will install the JeOS variant.
Build your own copy with vmbuilder from Ubuntu.
The kernel of JeOS is specifically tuned to run in virtual environments. It is stripped off of the unwanted packages and has only the base ones. JeOS takes advantage of the technological advancement in VMware products. A powerful combination of limited size with performance optimization is what makes JeOS a preferred OS over a full server OS in a large virtual installation.
Also, with...