The good thing about Howtoforge is that they allways use Debian for their tutorials, here's how to configure Tomcat5 and Apache2 with Virtual Hosts using mod_jk
Enjoy it here
This tutorial explains how I was able to setup a web server in order to support Java Server Pages (JSP) and Servlets using virtually hosted websites. Although this setup worked for this particular environment, I can make no guarantees that it will work for yours, but it should with some tweaking. Ill explain later on. I have spent a lot of time gathering several resources in order to get this to work. Many portions of these resources have been deprecated and required a few workarounds. It is my intention that this tutorial will help anyone that has attempted to install such a system without success. If you find any inconsistencies within this tutorial, please notify me at the email address above.