How-to configure a Reverse Proxy with Apache2 for Windows

As John has alluded to, the default configuration for Apache installed on Windows is at Program Files\Apache2.2\httpd.conf in a flat file. The path may be somewhat different, as I don't have a Windows machine handy at the moment. Most Linux distributions have their own custom hierarchical structure which looks something like the following. This example is from Debian and may vary with other distributions.

• /etc/apache2/
  • apache2.conf Package provided configuration
  • conf.d/
    • Individual configuration files, usually from other packages, but could also be local configuration files
  • httpd.conf Local configuration file. Overrides contents of apache2.conf
  • mods-available/
    • Individual module configuration files, provided by the package and any support packages
  • mods-enabled/
    • Links to files in mods-available. Links are created/removed with a2enmod and a2dismod. Creating a link enables the given module.
  • ports.conf Enabled ports
  • sites-available/
    • Individual VirtualHost-style configuration files
  • sites-enabled
    • Links to files in sites-available. Links are created/removed with a2ensite and a2dissite. Creating a link enables the given site.

I've described all this to hopefully make it easier to understand how to replicate it under Windows. With the exception that links are not well supported under Windows (has this changed in Vista/Server 2008/Windows 7?) it's relatively easy to set this structure up. But you will have to do it manually, since the default configuration doesn't do it for you. Make sure you adjust the following to match the Linux distribution you're migrating from.

1. Assuming the original configuration file on Windows is at \Program Files\Apache2.2\httpd.conf (again, this may not be the correct location, I'll need to check a Windows machine to be sure), create the following directories:

   • \Program Files\Apache2.2\conf.d\
   • \Program Files\Apache2.2\sites-enabled\

   You don't need the sites-available directories since links aren't supported under Windows. You can add them if you want, but things won't work the same. Also, I'd recommend putting the module configurations into the httpd.conf file. Since they aren't managed by the package manager, it will be easier to just keep them in one spot.

2. Make any modifications from the Linux httpd.conf file to the Windows file. If you have an apache2.conf file under Linux, this is easy, since httpd.conf will only have overrides for apache2.conf.

3. Add a ports.conf file, if desired. The contents of this can also exist in the httpd.conf file.

4. Copy files that exist in the Linux conf.d directory into the Windows directory. Make sure the filenames end with .conf, adding it if it wasn't there before. This is done to help make directory parsing (set up below) less error prone.

5. Copy files that exist in the Linux sites-enabled directory into the Windows directory. As in step 4, make sure the filenames end with .conf, adding it if it didn't exist under Linux.

6. Add the following to the end of the httpd.conf file:

   # If you added a ports.conf file, add the following
   Include ports.conf
   # Include the conf.d files
   Include conf.d/*.conf
   # Include the enabled sites
   Include sites-enabled/*.conf
   

7. Restart Apache. Make sure you check for and correct any configuration errors.

This might not get you there 100%, but it should get you close.

Is there any reason you can't create the same folder structure under Windows as you have under Linux? You can't expect to just install Apache and have it magically create a tree of folders that aren't part of it's default configuration. Create the same structure, copy the configs and edit as and where appropriate.

now i have found the Solution with the following :

NameVirtualHost *:80
<VirtualHost *:80>
    ProxyPreserveHost On
    ProxyRequests Off
    <Proxy *>
        Order deny,allow
        Allow from all
    </Proxy>
 # der Adresse http://>servername</crm wird hier wie folgt umgeleitet
    ProxyPass /crm http://localhost:8080/crm
    ProxyPassReverse /crm http://localhost:8080/crm
  # der Adresse http://>servername</trac wird hier wie folgt umgeleitet
    ProxyPass /trac http://localhost:8000/trac
    ProxyPassReverse /trac http://localhost:8000/trac
</VirtualHost>

and this goes to C:\Program Files\Apache Software Foundation\Apache2.2\conf\extra\httpd-vhosts.conf

It is realy simple if you know where to put the parameters because the standard folder structure after standard-setup is different for apache2.2 on ubuntu 8.04 and windows2008.

Peace

Ice