One of the most unique and useful features of Apache httpd's reverse proxy is the embedded balancer-manager application. Similar to modstatus, balancer-manager displays the current working configuration and status of the enabled balancers and workers currently in use. This module requires the service of modproxy.It provides the features used for proxying HTTP and HTTPS requests. Modproxyhttp supports HTTP/0.9, HTTP/1.0 and HTTP/1.1. It does not provide any caching abilities. If you want to set up a caching proxy, you might want to use the additional service of the modcache module. Thus, in order to get the ability of handling HTTP proxy.
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In this How-To guide, we will show you how to set up a reverse proxy between your Apache webserver and your Tomcat server.
Prerequisites
For this you are going to need the following
Tomcat | http://tomcat.apache.org/ | Tomcat application server. |
Apache proxy directives can be used in two contexts - server config and virtual host. The examples below will be in the server config context as well as pertain to Apache that has been compiled with the source package from http://httpd.apache.org.
To use the apache proxy directives you need to have the following modules loaded:
Those lines above need to be put in the Apache configuration file where other LoadModule lines are set, like for example, httpd.conf.
Next, in your configuration file add:
The directives above secures your Apache server and sets up the reverse proxy to the Tomcat server. In this example, the Tomcat server and Apache webserver are on the same machine and Tomcat is listening on the default port of 8080.
You can test to see that your proxy is working by accessing http://localhost/webapps. You should see the default Tomcat homepage. Note, that /webapps in the Location block, the ProxyPass and the ReverseProxyPass lines can be whatever you want. You can use /foo if you want and you can access Tomcat with http://localhost/foo.
Note Make sure you understand the security issues involved with proxies and set up access controls for your proxy configuration.
With a default Tomcat setup, you will have broken links in the Tomcat Manager page. Learn how to fix them with mod_proxy_html.
Apache Https To Http Proxy List
For more complete information on mod_proxy, see the Apache Docs.
Apache Proxy Redirect Https To Http
For more complete information on reverse proxies, see Apache Tutor reverse proxies.