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Tuesday May 16, 2006

Configuring Reverse Proxy in Sun Java System Web Server 7.0 Technology Preview

Configuring Reverse Proxy in Sun Java System Web Server 7.0 Technology Preview

Sun Java System Web Server 7.0 Technology Preview is now avaliable for FREE and can be downloaded from here.

Introduction

A reverse proxy is a proxy that appears to be a web server (origin server) to clients but in reality forwards the requests it receives to one or more origin servers. Because a reverse proxy presents itself as an origin server, clients do not need to be configured to use a reverse proxy. By configuring a given reverse proxy to forward requests to multiple similarly configured origin servers, a reverse proxy can operate as an application level software load balancer. In a typical deployment one or more reverse proxies will be deployed between the browsers and the origin servers.
In this article I will descirbe how to configure reverse proxy in Sun Java System Web Server 7.0 via CLI.

Configuring reverse proxy in Sun Java System Web Server 7.0

Go to Sun Java System Web Server 7.0 installation directory.
Start Admin Server

./admin-server/bin/startserv

Start wadm.

/bin/wadm --user=admin


Please enter
admin-user-password>

Sun Java System Web Server 7
B12/02/2005 18:02

wadm>

Then run create-reverse-proxy CLI

wadm>create-reverse-proxy
--config test --vs test --uri-prefix=/ --server=http://abc.sun.com:8080

where server can contain more than one comma separated URLs.

obj.conf should have entries that look like

#obj.conf
<Object name="default">
...
NameTrans fn="map" from="/" name="reverse-proxy-/" to="http:/"
...
</Object>
...
<Object name="reverse-proxy-/">
Route fn="set-origin-server" server="http://abc.sun.com:8080"
</Object>

<Object ppath="http:*">
Service fn="proxy-retrieve" method="*"
</Object>