centos相关

Centos7.3 安装Mysql5.7并修改密码策略可以设置简单密码----https://blog.csdn.net/zyw_java/article/details/70949596

centos7通过yum安装mysql，并授权远程连接----https://www.cnblogs.com/rongfengliang/p/5727088.html

防火墙临时关闭 ：systemctl stop firewalld

防火墙禁止开机启动： systemctl disable firewalld

重启mysql服务： systemctl restart mysqld