We are using a public apache web server as a reverse proxy for to show a drupal instance (to the client). The website should come up in http://publicSite/path The Reverse proxy contains basic apache configuration pointing a "subfolder" to the internal webserver. Something like:

ProxyPass /path http://internaldomain/
ProxyPassReverse /path http://internaldomain/

The problem is that Drupal 8 has no longer a $base_url and the site is broke (CSS, JS). Adding publicSite in the $settings['file_public_base_url'] does not help. CSS/JS and links to themes are still broken.

There is a settings section on a Reverse Proxy in the settings.php, but it does not address the issue on accessing the website from a /subfolder url. Any hints to solve this issue!?


1 Answer 1


You just need to reverse proxy all the asset directories like here (this proxies site preosasde via real site proreos):

ServerName preosasde

ProxyPass /themes/ http://proreos/themes/
ProxyPassReverse /themes/ http://proreos/themes/

ProxyPass /core/ http://proreos/core/
ProxyPassReverse /core/ http://proreos/core/

ProxyPass /vendor/ http://proreos/vendor/
ProxyPassReverse /vendor/ http://proreos/vendor/

ProxyPass /sites/ http://proreos/sites/
ProxyPassReverse /sites/ http://proreos/sites/

ProxyPass / http://proreos/asde/
ProxyPassReverse / http://proreos/asde/

Take care about the order of that entries and be aware that you will loose your users credentials (cause of the different domain).

  • Thank you for the solutions. Seems logic. I am trying to connect through a subfolder path. So drupal is installed at root of proreos, but the access should come from preosasde/drupal. I tried changin correcting the ProxyPass & ProxyPassReverse and although this is fine, drupal aims link resources to absolute paths. So if I am at preosasde/drupal the link to 'sites' will be /sites, aiming to find it at root...
    – Al-Punk
    Jul 6, 2016 at 14:28
  • Leaving them on, with the expense of having additional proxy-spaces blocked helps, but again, this is a problem once the website is configured to have clean-urls. URLs are linked now to absolute paths. It feels the use of a $base_url was neccessary in Drupal, pitty that functionality is removed
    – Al-Punk
    Jul 6, 2016 at 14:33
  • Bad problem, yes. I can do it with mod_rewrite because I have not too much paths to relink. 10 years ago, I would have re-programmed mod_proxy to rewrite the URLs :-) ... maybe there's an option for this? Don't know, sorry. Jul 6, 2016 at 14:57
  • Appreciate your feedback :)
    – Al-Punk
    Jul 7, 2016 at 11:27

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