Apache Reverse Proxy for Multiple Sites Help

Server Config
1

Hi. I’m having some real issues with configuring apache to do what I want it to do; I’m pretty novice when it comes to configuration.

Okay, so what I am basically trying to do is host instances of an application for separate clients behind a single domain name.

Say I have domain name mydomain.com. I have an application that runs on Tomcat with the root context of /myapp. I have 2 of these running, one on tomcat1, one on tomcat2.

What I want to do is type something like http://mydomain.com/client1/myapp, which will redirect to the appropriate Tomcat server as http://tomcat1/myapp.

After the session is established, I will use a unique JVM route (like is used for load balancing Tomcat through apache) so that http://mydomain.com/myapp requests for the rest of the session will get rewritten to http://tomcat1/myapp.

I can’t get this working.

Here is my current attempt. Any help would be much appreciated.

I left in my commented fragments so people can see other things I have tried.

Code:

<VirtualHost *:80>   
   ServerName mydomain.com
   ServerAlias mydomain.com
   RewriteEngine on
   ProxyRequests off
   ProxyStatus Full
   ProxyPreserveHost On
   
   <Location /server-status>
      SetHandler server-status
   </Location>
 
   RewriteLog "C:\\Program Files\\Apache Software Foundation\\Apache2.2\\htdocs\\client1_rewrite.log"
   RewriteLogLevel 9
   
   #ProxyPassReverse /client1/ http://tomcat1:80/
   #ProxyPassReverse /client1/ http://mydomain.com/
   #ProxyPassReverse /client2/ http://tomcat2:80/   
   
   #RewriteCond %{HTTP_HOST} ^tomcat1$
   #RewriteRule ^(.*)$ http://mydomain.com/$1 [N]
        
   #RewriteRule ^/client1/(.{0}) http://tomcat1:80/myapp [P]
   #RewriteRule ^/client1(.{0}) http://tomcat1:80/myapp [P]
   #RewriteRule ^/client1(.*)$ http://tomcat1:80$1 [P]
   #RewriteRule ^/client1/(.{0})$ http://mydomain.com/client1/myapp [N]
   #RewriteRule ^/client1(.{0})$ http://mydomain.com/client1/myapp [N]
   RewriteCond %{HTTP_REFERER} (/client1/) [OR]
   RewriteCond %{HTTP_COOKIE}   (.client12)    
   RewriteRule ^/(.*)$ client1/$1 [P]
   #RewriteRule ^/(.*)$ http://tomcat1:80/$1 [P]

   
   #RewriteRule ^/client2(.{0}) http://tomcat2:80/myapp [P]
   #RewriteRule ^/client2/(.{0}) http://tomcat2:80/myapp [P]
   #RewriteRule ^/client2(.*)$ http://tomcat2:80$1 [P]
   RewriteCond %{HTTP_REFERER} (/client2/) [OR]
   RewriteCond %{HTTP_COOKIE}   (.client2)
   RewriteRule ^/(.*)$ http://tomcat2:80/$1 [P]   
      
   <location /client1 >
      ProxyPass http://tomcat1:80/
      ProxyPassReverse http://tomcat1:80/   
   </location>
   

   <location /client2/ >
      ProxyPassReverse http://tomcat2:80/   
   </location>   
     
</VirtualHost>
2

I eventually figured out it was because the base URL /myapp does 2 302 redirects before applying the JVM route to the cookie. Those redirects failed since non of the rewrite rules applied to them.

Not that this was clear at all in the Apache logs.

3

Alright. Kudos for figuring it out :slight_smile:

4

What can’t you get working? The ProxyReverse from [noparse]http://www.example.com/client1/myapp[/noparse] to [noparse]http://tomcat1/myapp[/noparse], or the JVM route after that?

If the problem is in the JVM route I’m pretty sure you can’t get that to work, because the client can’t resolve [noparse]http://tomcat1/[/noparse]. That’s the whole purpose of ProxyReverse :wink: