Cannot establish database connection

[garyfartsalot]

After a server reboot, cannot get into the website at all now, keep getting error:
Cannot establish database connection. Check your database setting in configuration file. in /opt/bitnami/apps/abantecart/htdocs/core/database/amysqli.php on line 50

[abolabo]

Mysql error "28 from storage engine" - means "not enough disk space".