Centos 首次运行MySQL时间:2023-03-09 01:57:07 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