Apache2 + Tomcat5 + mod_jk

This is a straight forward step-by-step tutorial to set up Apache2 to server java content (jsp and servlets) through tomcat web server using mod_jk.

1. Install apache2 along with dependencies.
   # apt-get install apache2

2. Install tomcat5 along with dependencies.
   # apt-get install tomcat5

   Modify /etc/default/tomcat5 to set the correct path to JAVA_HOME directory (jdk needs to be installed and setup prior to installing tomcat). Then restart tomcat.
   # /etc/init.d/tomcat5 restart

   The tomcat5 webserver runs on port 8180 by default in Mepis / Ubuntu.

3. Install the mod_jk connector and restart apache2 to load the module.
   # apt-get install libapache2-mod-jk
   # /etc/init.d/apache2 restart

   The beauty of installing the distribution specific libapache2-mod-jk package is that it comes pre-configured with all the necessary files and options for using the connector out-of-the-box.

4. Next you need to edit /etc/apache2/apache2.conf and add the following lines: .

   ##### Begin Tomcat connector configuration #####

   # Where to find workers.properties
   JkWorkersFile /etc/libapache2-mod-jk/workers.properties
   # Where to put jk logs
   JkLogFile /var/log/apache2/mod_jk.log
   # Set the jk log level [debug/error/info]
   JkLogLevel info
   # Select the log format
   JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
   # JkOptions indicate to send SSL KEY SIZE,
   JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories
   # JkRequestLogFormat set the request format
   JkRequestLogFormat "%w %V %T"

   ##### End Tomcat connector configuration #####

5. Now you have to add directives in /etc/apache2/apache2.conf or in the virtual host ( ... ) section to tell apache which content has to be forward to tomcat. Below are a few examples.

   To send all jsp requests to tomcat, add the line:
   JkMount /* ajp13_worker

   To send servlet for context /jsp-examples:
   JkMount /jsp-examples ajp13_worker

   To send JSPs for context /jsp-examples/*:
   JkMount /jsp-examples/* ajp13_worker

   To send all but /cgi-bin/ requests to tomcat, add:
   JkMount /* ajp13_worker
   JkUnMount /cgi-bin/* ajp13_worker