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
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
原文：https://www.cnblogs.com/pealicx/p/8340928.html