centos7.0 Check to see if MySQL is running

Centos7 comes with a variant of mariadb, a MySQL.

See if you have installed:
Yum List installed mysql*
Rpm-qa | grep mysql*

Installing the MySQL software (mariadb)

Yum Install mysql*

Start MySQL
Systemctl start Mariadb.service or Systemctl start Mysqld.service

End
Systemctl Stop Mariadb.service or systemctl stop Mysqld.service

Restart
Systemctl Restart Mariadb.service or systemctl restart Mysqld.service

Power-on self-booting
Systemctl enable Mariadb.service or Systemctl enable Mysqld.service

centos7.0 Check to see if MySQL is running