apache proxy doesn't work

Question

I've got a problem with my apache configuration.

I'm running a apache2 in a docker container. In the same container is a webrick running on port 3000

What I want is that when someone calls subdomain.mydomain.de There should be a pass through to

subdomain.mydomain.de:3000

I've done this:

sudo nano /etc/apache2/sites-enabled/000-default.conf

added this in default.conf

<VirtualHost *:80>
  ProxyPreserveHost On
  ProxyRequests Off
  ServerName mydomain.de
  ServerAlias *.mydomain.de
  ProxyPass / http://subdomain.mydomain.de:3000/
  ProxyPassReverse / http://subdomain.mydomain.de:3000/
</VirtualHost>

 a2enmod proxy
 sudo /etc/init.d/apache2 restart

But all what I got is this:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at [no address given] to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Answer 1

Solution for this problem is:

sudo a2enmod proxy sudo a2enmod proxy_http sudo service apache2 reload