Symtoms:
1) MySQL extension is enabled under Plesk > Subscriptions > example.com > PHP Selector > PHP 5.6;
2) Checking from SSH shows that mysql extension is enabled in PHP selector:
# selectorctl --list-extensions --version=5.6 | grep mysql + mysql + mysqli - mysqlnd - nd_mysql - nd_mysqli - nd_pdo_mysql + pdo_mysql
3) Checking directly for cloudlinux PHP 5.6 shows that mysql extension is not loaded:
# /opt/alt/php56/usr/bin/php-cgi -m | grep mysql
4) mysql library exists on the server and it is enabled:
# ls -la /opt/alt/php56/usr/lib64/php/modules |grep mysql
lrwxrwxrwx 1 root root 36 Jul 5 13:55 mysql.so -> /opt/alt/php56/etc/mysql5.5/mysql.so
# cat /opt/alt/php56/etc/php.d.all/mysql.ini
; Enable mysql extension module
extension=mysql.so
5) The site shows the following error:
Your PHP installation appears to be missing the MySQL extension which is required by WordPress
6) OS is Cloudlinux
Cause:
Cloudlinux PHP misconfiguration.
Contact our technical team regarding this case.
