Apache proxy configuration for Tomcat Example (with Wamp server apache module (Apache2.2.xx))

Apache Proxy Configuration - To place Tomcat server behind apache server

Scenario: You have tomcat server applications (http://localhost:8080/app/, etc)which need to be placed behind a apache server. In this example apache port is 9090. You can have your own ports.

First download WampServer2.0i file and install in your machine.
Start Wamp and start apache service (Click on wamp icon in toolbar and go to apache-Service-Start/Resume Service )
In you wamp installation directory go to it's apache module and open httpd.conf file. (WAMP_HOME\bin\apache\Apache2.2.11\conf\httpd.conf)

1. Here you have to enable following modules.
                                  LoadModule proxy_module modules/mod_proxy.so
                                  LoadModule proxy_http_module modules/mod_proxy_http.so 
                                  LoadModule rewrite_module modules/mod_rewrite.so

Search them in httpd.conf file and uncomment them. (Remove # mark infront of each module entry)
Now restart Apache (Click on wamp icon in toolbar and go to apache-Service-Restart Service )

Veryfy whether modules are enabled
Click on Wamp icon and go to Apache-Apache Modules.
Check whether above modules are marked as enabled (If not by clicking on each module enable them and restart wamp)

Now you have enabled the required modules.

2. Add following line to the httpd.conf file

          ProxyRequests Off

3. Now add theproxy stanza as follows to httpd.conf


    Order deny,allow
    Allow from all

4. Then you have to enable URL rewriting as follows

      RewriteEngine on

5. For each server which need to be placed behind apahe server add a ProxyPass statement as follows. In here  proxydemo is the namespace for the application access. 

ProxyPass /proxydemo/ http://localhost:8080/app/


6. For each ProxyPass statement add ProxyPassReverse statement to rewrite Location headers information before passing redirect response back to the client. 
ProxyPassReverse /proxydemo/ http://localhost:8080/app/

7. To avoid 404 errors after URL without ending slash add the following line to httpd.conf
    
     RewriteRule ^/proxydemo$ /proxydemo/ [R]


Now You have done proxypassing.
Here after when you access apachserver proxypass proxydemo by http://localhost:9090/proxydemo , it will redirect to http://localhost:8080/app/ but actual URL is hidden from outside.

Imagine now you have service.jsp file in http://localhost:8080/app/service.jsp . To access this through Proxy the URL for outside will be http://localhost:9090/proxydemo/service.jsp.

Please ask if you got any problems.

In my next post apache load balancing for tomcat server will be discussed with an example.

Comments

  1. chucklsNovember 10, 2011 at 6:40 AM

    Use a Location directive to make this a little more tidy.


    ProxyPass http://localhost:8080/app/
    ProxyPassReverse http://localhost:8080/app/

    ReplyDelete
  2. chucklsNovember 10, 2011 at 6:44 AM

    Arggh! It filtered out the punctuation.

    <Location /proxydemo>
    ProxyPass http://localhost:8080/app/
    ProxyPassReverse http://localhost:8080/app/
    </Location>

    ReplyDelete
  3. LakmaliNovember 11, 2011 at 8:59 PM

    yeah I agree ! Thanks for the suggestion :)

    ReplyDelete
  4. UnknownAugust 1, 2012 at 9:58 PM

    Hey I'm getting the 404 error.
    Could you please tell me where to add this line

    RewriteRule ^/proxydemo$ /proxydemo/ [R]

    I didn't get it properly.

    ReplyDelete
  5. LakmaliSeptember 3, 2012 at 7:57 PM

    Hi Kapil,

    Add it to the same configuration file which you configured other things. (httpd.conf or custom conf file and include in httpd.conf). Make sure to change 'proxydemo' name to what you have used.

    ReplyDelete
  6. UnknownOctober 22, 2015 at 4:33 AM

    It works for me.
    Thanks

    Felipe

    ReplyDelete

Post a Comment

Popular posts from this blog

PHP-SOAP web service with out a WSDL

This article is going to describe how to create a simple web service with php-soap step by step. Requirements     Server to run php (apache, xampp , wamp)     PHP-SOAP extension Steps Let's write a simple web service to find the length of a given string. So here is the code for StringLengthServer.php   <?php # StringLengthServer.php # Copyright (c) 2011 by Lakmali Baminiwatta #     function findLength($string) {            return "Length of the string " . $string . "is : ".strlen($string);     }            $server = new SoapServer(null,               array('uri' => "urn://www.lakmali.lk"));        $server->addFunction("findLength");        $server->handle();  ?> First thing done here is to write a function to perform the action done by the service. So here function findLength($string) takes a string as the argument and prints back the length of it. Then SoapServer is created. First argument
Keep reading

Boomi Mapping - Removing special chars from an input

Image
Dell Boomi mapping shape provides numerous ways to modify/enrich an input via functions. In this post I am going to show how I validated and removed special chars from an input using Scripting and do it along with another string function. The user defined functions available with mapping, allows us to apply sequence of functions to the input. In this example, I am going to use it. Use Case: I have two input strings coming from the source profile (first_name and last_name), which I want to first concatanate together and then remove non-alphanumeric characters if present. Solution In your map, add an User Defined function and add two inputs; first_name, last_name.  Add User Defined function into the map Added inputs to the user defined function As the first step, add a function "String Concat" under the  "String" category.  Specify first_name and last_name as the inputs. Also set a delimiter, if you need a one. In my case, I want to concatena
Keep reading

How to add Maven dependency from a relative path referencing a local jar

When you want to add a dependency which is not stored in maven repositories to your project this is the way!! You can manually download it and include inside the project and refer it from the pom.xml through a relative path. This example assumes that you have downloaded and stored the jar inside ${project}/src/test/resources/lib.  <dependency> <groupId>ojdbc</groupId> <artifactId>ojdbc6</artifactId> <scope>system</scope> <version>6</version> <systemPath>${basedir}/src/test/resources/lib/ojdbc6.jar</systemPath> </dependency> Here we must specify the scope of the dependency  as 'system'. There is another way which is to manually install the maven dependency to your local repository. You can find out how from here .
Keep reading