In CentOS 7 Linux MariaDB is by default installed, due to this you may face issue installing MySQL. If you want to install MySQL, first you should remove the existing MariaDB. MariaDB is a refraction of MySQL Step 1 : Remove Maria DB completely yum -y remove mariadb-libs Step 2: Install MySQL 5.7 sudo wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm sudo yum localinstall...