Setting up Apache Tomcat to work with Apache Server

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We are using mod_jk Tomcat-Apache plug-in that handles the communication between Tomcat and Apache.

Prerequisites

  • Setup Apache Tomcat
  • Setting up Apache Httpd Server
    Install the GNU compilers gcc and g++, make utility to maintain groups of programs and httpd-devel package with the following command in rpm based linux.

    yum install gcc* gcc-c++ make automake httpd-devel

Installation and configuration

Ensure Apache HTTP Server is not running

/etc/init.d/httpd stop

Download and extract Tomcat Connector to the following under /root

cd /root/
wget http://mirrors.kahuki.com/apache//tomcat/tomcat-connectors/jk/tomcat-connectors-1.2.32-src.tar.gz
tar -xvf tomcat-connectors-1.2.32-src.tar.gz
cd /root/tomcat-connectors-1.2.32-src/native/

Build and install with the following command

./configure --with-apxs=/usr/sbin/apxs; make; make install

Change permission of loaded module mod_jk.so

chmod 755 /usr/lib64/httpd/modules/mod_jk.so

Create mod_jk.conf file in apache httpd server.

vi /etc/httpd/conf.d/mod_jk.conf

Copy and paste below lines.

<IfModule !mod_jk.c>
  LoadModule jk_module "/usr/lib64/httpd/modules/mod_jk.so"
</IfModule>
JkWorkersFile "/opt/apache-tomcat-6.0.20/conf/jk/workers.properties"
JkLogFile "/opt/apache-tomcat-6.0.20/logs/mod_jk.log"
JkLogLevel emerg

Open workers.properties file in apache tomcat.

vi /opt/tomcat/conf/jk/workers.properties

Add ajp13 to workers.list so that the following line becomes:

worker.list=jk-status, ajp13

In mod_jk.conf and ssl.conf use mod_jk’s JkMount directive to assign specific URLs to Tomcat. For example the following directives will send all requests beginning with /idp to the “ajp13” worker.

Open mod_jk.conf in apache server.

vi /etc/httpd/conf.d/mod_jk.conf

Copy and paste below lines at the end of file.

JkMount /idp ajp13
JkMount /idp/* ajp13

Now open ssl.conf file to setup redirection for secure connection

vi /etc/httpd/conf.d/ssl.conf

Configure mod_ssl by adding the following lines near the end, just before the closing .

JkMount /idp ajp13
JkMount /idp/* ajp13

Restart tomcat and start apache

catalina.sh stop
catalina.sh start
/etc/init.d/httpd start
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