step1: 下载MYSQL RPM包
wget https://dev.mysql.com/get/mysql80-community-release-el7-11.noarch.rpm
step2:安装MySQL Yum Repository
sudo rpm -Uvh mysql80-community-release-el7-11.noarch.rpm
step3:安装MySQL Server
sudo yum install mysql-community-server
step4:启动MySQL服务
sudo systemctl start mysqld
step5:设置开机启动
sudo systemctl enable mysqld
DONE 完成安装!!!