Using Ispconfig 3.1 using the APS package installer, Wordpress sites install fine, but not Drupal. The Drupal site is created, however impossible to login as admin, whereas everything is fine with Wordpress sites. Using: Debian 8 Apache 2.4 PHP 5.6 Fast-CGI a2enmod rewrite gives Module rewrite already enabled Vhast file has: Options +FollowSymLinks AllowOverride All Require all granted
This appears to be something to do with Opcahe I turn it off for the Drupal site by adding Apache directive in the option tab for the domain. php_flag opcache.enable Off
The above worked for a newer Drupal 7 installs and smaller sites. A migration to the server of a bigger Drupal 7 site required turning off Xcache. <IfModule mod_php5.c> php_value xcache.cacher Off php_value xcache.size 0 php_value xcache.stat Off </IfModule> Adding to .htaccess file.