Centos 首次运行MySQL

1：启动MySQL

systemctl start mysqld.service

2：查看MySQL运行状态

systemctl status mysqld.service

3：查看默认密码

grep "password" /var/log/mysqld.log

4:修改密码：

ALTER USER 'root'@'localhost' IDENTIFIED BY '你的密码';

密码：要求含有大小写、数字、特殊字符