Configuring Apache to Proxy Tomcat Using the AJP Protocol.

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Step 1. Configure Tomcat
Comment out the normal connector above, and uncomment the AJP connector:
Adjust the port if you wish and add in the URIEncoding="UTF-8" attribute.

    <!--
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    -->

    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />

Step 2. Configure Apache
Open httpd.conf and scroll to the large LoadModule section. Ensure you have the following uncommented

#LoadModule proxy_module libexec/apache24/mod_proxy.so
#LoadModule proxy_ajp_module libexec/apache24/mod_proxy_ajp.so

In my httpd.conf, right at the bottom there is a line:

Include etc/apache24/Includes/*.conf

Create an ajp.conf file.
You could put the configuration for AJP in the main httpd.conf file but I prefer to keep things separated.

etc/apache24/Includes/proxy-ajp.conf

*Optional
(

ProxyRequests Off
<proxy *>
        Order deny,allow
        Deny from all
        Allow from localhost
</Proxy>
)

ProxyPass /examples ajp://localhost:8009/examples
ProxyPassReverse /examples ajp://localhost:8009/examples

A sample balancer setup

ProxyPass "/special-area" "http://special.example.com" smax=5 max=10
ProxyPass "/" "balancer://mycluster/" stickysession=JSESSIONID|jsessionid nofailover=On
<Proxy "balancer://mycluster">
    BalancerMember "ajp://1.2.3.4:8009"
    BalancerMember "ajp://1.2.3.5:8009" loadfactor=20
    # Less powerful server, don't send as many requests there,
    BalancerMember "ajp://1.2.3.6:8009" loadfactor=5
</Proxy>

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