1.下载MySQL安装包
wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm
安装MySQL源
yum -y localinstall mysql57-community-release-el7-11.noarch.rpm
2.在线安装MySQL
yum -y install mysql-community-server
3.启动MySQL服务
systemctl start mysqld
如果是WSL的CentOS7的话可能会报错：Failed to get D-Bus connection: Operation not permitted
解决办法：WSL的CentOS7报错Failed to get D-Bus connection: Operation not permitted解决办法 - 简书 (jianshu.com)
4.设置MySQL开机自启
systemctl enable mysqld
systemctl daemon-reload
5.设置root登陆密码
这时候你会发现全程都未设置root帐号和密码
设置root密码方法：安装MySQL5.7没设置密码解决方法 - 简书
原文章：【centos7 + MySQL5.7 安装】centos7 安装MySQL5.7_宇风-飞扬 的博客-CSDN博客_centos安装mysql5.7
