Install mysql server on RHEL7

RHEL (and other projects like CentOS) have dropped the MySQL project and started to use the (community driven) fork MariaDB as their default database.
If you want to install mysql on these servers, you’ll need to install maiadb. If you still want to continue using mysql, you can add the repository manually.

Download the repository rpm

# sudo yum install wget # wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

Install the repository

# sudo rpm -i mysql-community-release-el7-5.noarch.rpm

You can now install the mysql-server

# sudo yum install mysql-server # sudo chkconfig mysqld on # sudo systemctl [start | stop | restart] mysqld

And finally, secure your installation