windows下mysql初始密码设置

深碍√TFBOYSˉ_ 2021-11-26 13:58 434阅读 0赞

转载自：http://blog.csdn.net/ofreelander/article/details/50802780

1.my-default.ini 改名my.ini

在解压的目录下面复制my-default.ini一份改名字为 my.ini。

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTYwMzA0MTUwNTU1MjU1P3dhdGVybWFyay8yL3RleHQvYUhSMGNEb3ZMMkpzYjJjdVkzTmtiaTV1WlhRdi9mb250LzVhNkw1TDJUL2ZvbnRzaXplLzQwMC9maWxsL0kwSkJRa0ZDTUE9PS9kaXNzb2x2ZS83MC9ncmF2aXR5L0NlbnRlcg][]

2.打开 Windows 环境变量设置, 新建变量名 MYSQL\_HOME , 变量值为 [MySQL][] 安装目录路径, 在 环境变量 的 Path 变量中添加 ;%MYSQL\_HOME%\\bin;

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTYwMzA0MTUwODA3MDY2P3dhdGVybWFyay8yL3RleHQvYUhSMGNEb3ZMMkpzYjJjdVkzTmtiaTV1WlhRdi9mb250LzVhNkw1TDJUL2ZvbnRzaXplLzQwMC9maWxsL0kwSkJRa0ZDTUE9PS9kaXNzb2x2ZS83MC9ncmF2aXR5L0NlbnRlcg][]

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3.几个命令

安装 MySQL 服务: mysqld --install  
启动: net start MySQL  
停止: net stop MySQL  
卸载: sc delete MySQL，mysqld -remove

命令行窗口一定要用管理员模式打开，来到%MYSQL\_HOME%\\bin;这个目录下，

a.安装服务：mysqld --install。

b.启动服务 net start MySQL

（可能遇到问题，MySQL 服务正在启动。MSQL服务无法启动。服务没有报告任何错误。请键入NET HELPMSG 3534 以获得更多的帮助。

把data文件夹删掉，用mysqld  --initialize 初始化data目录即可。删不掉data的时候，把任务管理器打开kill掉mysqld进程,其他启动或者关闭服务失败的时候一样做法。）

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTYwMzA0MTUxNzM0MTczP3dhdGVybWFyay8yL3RleHQvYUhSMGNEb3ZMMkpzYjJjdVkzTmtiaTV1WlhRdi9mb250LzVhNkw1TDJUL2ZvbnRzaXplLzQwMC9maWxsL0kwSkJRa0ZDTUE9PS9kaXNzb2x2ZS83MC9ncmF2aXR5L0NlbnRlcg][]

当成功进入开启服务以后，用

mysql -u root -p 回车

输入密码

出现 ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

关闭服务net stop MySQL

用安全模式打开，mysqld --skip-grant-tables

这个时候，光标会一直闪。注意，不要动，打开另一个命令行窗口。

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTYwMzA0MTUyNDUxOTAxP3dhdGVybWFyay8yL3RleHQvYUhSMGNEb3ZMMkpzYjJjdVkzTmtiaTV1WlhRdi9mb250LzVhNkw1TDJUL2ZvbnRzaXplLzQwMC9maWxsL0kwSkJRa0ZDTUE9PS9kaXNzb2x2ZS83MC9ncmF2aXR5L0NlbnRlcg][]

4.和前面一样的操作来到bin目录下，

密码为空,直接回车；

就可以进去了

然后

use mysql;

（可能先前的版本密码的抬头是password，5.7.11是 authentication\_string,可以select \* from user,查看一下）

(老版本)update user set password=password("123456") where user="root";

（5.7.11）update user set authentication\_string=password("123456") where user="root";

最后，flush privileges;就OK了。

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTYwMzA0MTU0MTQ2NjQ2P3dhdGVybWFyay8yL3RleHQvYUhSMGNEb3ZMMkpzYjJjdVkzTmtiaTV1WlhRdi9mb250LzVhNkw1TDJUL2ZvbnRzaXplLzQwMC9maWxsL0kwSkJRa0ZDTUE9PS9kaXNzb2x2ZS83MC9ncmF2aXR5L0NlbnRlcg][]

5.最后登录一下试试。

![aHR0cDovL2ltZy5ibG9nLmNzZG4ubmV0LzIwMTYwMzA0MTU0NDEyMTYyP3dhdGVybWFyay8yL3RleHQvYUhSMGNEb3ZMMkpzYjJjdVkzTmtiaTV1WlhRdi9mb250LzVhNkw1TDJUL2ZvbnRzaXplLzQwMC9maWxsL0kwSkJRa0ZDTUE9PS9kaXNzb2x2ZS83MC9ncmF2aXR5L0NlbnRlcg][]

刚开始启动失败，是英文mysqld进程还开着呢，kill掉就行了。

最后，成功修改了root密码。

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[MySQL]: http://lib.csdn.net/base/14
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