1. 下载mysql的repo源

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

2. 安装 mysql-community-release-el7-5.noarch.rpm 包

sudo yum -ivh mysql-community-release-el7-5.noarch.rpm

3. 安装mysql

 sudo yum install mysql-server

4. 启动mysql

service mysqld start

mysql安装 - yum安装