Reverse proxy: unwanted URL change

I have a web-service that I would like to expose through the URL foo.com/bar. However my Apache reverse proxy does not work as intended. I have created the file 001-default.conf, which contains the following code:

<VirtualHost *:80>
    ProxyPreserveHost On
    ProxyRequests Off
    ProxyPass /bar http://foo.com:8080/bar
    ProxyPassReverse /bar foo.com:8080/bar

    DocumentRoot /var/www/foo/
    ServerName info.foo.com
    <Directory /var/www/foo>
            Options Indexes FollowSymLinks MultiViews Includes
            AllowOverride All
            Order allow,deny
            allow from all
    </Directory>
</VirtualHost>

Right now I receive a 404 error code.

I want to achieve all hits on foo.com/bar to be silently redirected to foo.com:8080/bar, meaning that the user should only see the URL foo.com/bar. The reverse proxy redirect should also include requests such as foo.com/bar?=foobar.

I did enable proxy_http and proxy:

% sudo a2enmod proxy_http        
  Considering dependency proxy for proxy_http:
  Module proxy already enabled
  Module proxy_http already enabled

I hope that there is someone out there that are able to help me with this.

Similar problem that did not solve my problem: apache reverse proxy changes url Transparent redirect to port 8080

Solution

Try and edit the config to:

<VirtualHost *:80>
    <Proxy *> 
            Order deny,allow
            Allow from all
    </Proxy>
    ProxyPreserveHost On
    ProxyRequests Off
    ProxyPass /bar http://foo.com:8080  # Note removed /bar
    ProxyPassReverse /bar foo.com:8080  # Note removed /bar

    DocumentRoot /var/www/foo/
    ServerName info.foo.com
    <Directory /var/www/foo>
            Options Indexes FollowSymLinks MultiViews Includes
            AllowOverride All
            Order allow,deny
            allow from all
    </Directory>
</VirtualHost>

You can also try with mod_alias to avoid te /bar/bar issue you might be facing now. I do not know much about it, see the documentation: http://httpd.apache.org/docs/2.2/mod/mod_alias.html

Try something like adding this to your conf

 Alias /bar http://foo.com:8080

Using this you might wan't to remove the proxy.