In a web browser, visit mysql.com page:

https://dev.mysql.com/downloads/repo/yum/

Locate the desired version, and update it as needed in the link below:

Execute the following command：

　　dnf install mysql-server

enable mysql services:

　　systemctl enable mysqld

start mysql services

　　systemctl start mysqld

configuring mysql server

　　sudo mysql_secure_installation

stop mysql service

　　systemctl stop mysqld

view mysql status

　　systemctl status mysqld

在Centos7 上面 安装mysql7 简录