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I've installed Apache2 on 2 ubuntu 11.10 VMs and I am trying to get a very basic Reverse Proxy working.

I have nothing but the default site setup on each. I want to go to http://server.com/app and have it return http://app.internal.server.com/.

From what I have read it should all be fairly straight forward, but I have no experience with Apache so I am probably missing something!

For example, I haven't set up anything on Apache (other than the ProxyPass directives) to tell it anything about /app.

I enabled mod_proxy with apache2ctl mod_proxy and added the following to httpd.conf then restarted apache2:

ProxyRequests Off
ProxyPreserveHost On
<Proxy *>
    Order allow,deny
    Allow from all
</Proxy>
ProxyPass /app/ http://app.internal.server.com/
ProxyPassReverse /app/ http://app.internal.server.com/

In the apache2 error.log I am seeing:

File does not exist: /var/www/app
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You'll need to put the proxy configuration within the default <VirtualHost> block in /etc/apache2/sites-available/default.

Most of that config is inert, by the way - all you need is the ProxyPass/ProxyPassReverse and potentially the ProxyPreserveHost if the backend server needs that.

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  • I had to change /app/ to /app otherwise it only worked with the trailing slash.. THANKS!
    – neildeadman
    Commented Feb 5, 2012 at 18:28

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