1) plesk db
2) grep innodb /etc/my.cnf.d/*.*
return empty
3) Are you using the correct my.cnf location (/etc/my.cnf on Redhat, CentOS, but /etc/mysql/my.cnf on Debian, Ubuntu)?
I am using centos and file location on /etc/my.cnf. The strange thing is that it has an extra dot in the end if i...