Login to your server
Install MySQL using yum command on centOS
yum install mysql-server
Once you installed the MySQL server,then you have to start MySQL services using the below command
systemctl start mysqld
Your server has “root” user but MySQL also has its own. It means your server’s root password is not similar as root password for MySQL. Go ahead set a root MySQL password by issuing this command
And then It will also ask several questions.Simply type Y and then click it.