一、mysql5.7在线安装 1、下载并安装MySQL官方的Yum Repository wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm/ 2、下载yum源 yum -y install mysql57-community-release-el7-10.noarch.rpm 3、开始安装MySQL服务器 yum -y install mysql-community-server 4、启动 systemctl start mysqld.service