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mysql 修改密码和忘记密码操作

2022-08-09 09:29:00 潇湘梦

忘记密码比较麻烦,太简单被攻破,太复杂记不住 嗨。。。。


重置密码的第一步就是跳过MySQL的密码认证过程,方法如下:


#vim /etc/my.cnf(注:windows下修改的是my.ini)

在文档内搜索mysqld定位到[mysqld]文本段:
/mysqld(在vim编辑状态下直接输入该命令可搜索文本内容)

在[mysqld]后面任意一行添加“skip-grant-tables”用来跳过密码验证的过程,如下图所示:

保存文档并退出



/etc/init.d/mysql restart  (有些用户可能需要使用/etc/init.d/mysqld restart)


msyql 

user mysql


update mysql.user set authentication_string=password('[email protected]') where user='root';

flush privileges;  #立即生效

drop user [email protected]'%';


 禁止、允许MySQL root用户远程访问权限

关闭MySQL root用户远程访问权限:

use mysql;

update user set host = "localhost" where user = "root" and host = "%";

flush privileges;

打开MySQL root用户的远程访问权限:

use mysql;

update user set host = "%" where user = "root";

flush privileges;

update user set host = '%' where user = 'cloudservice';




--创建名称为“testdb”数据库,并设定编码集为utf8
CREATE DATABASE IF NOT EXISTS testdb DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

--创建了一个名为:test 密码为:1234 的用户
 create user 'test'@'localhost' identified by '1234';


--授予用户test通过外网IP对数据库“testdb”的全部权限
grant all privileges on 'testdb'.* to 'test'@'%' identified by '1234';  


CREATE DATABASE IF NOT EXISTS cloudservicedb DEFAULT CHARSET utf8 COLLATE utf8_general_ci;

create user 'cloudservice'@'localhost' identified by '123456789';

grant all privileges on 'cloudservicedb'.* to 'cloudservice'@'%' identified by '123456789';

grant create,alter,drop,select,insert,update,delete on cloudservicedb.* to [email protected]'%';	 



SHOW DATABASES;

drop  DATABASE  please_read_me_vvv;

查看用户
 select User,authentication_string,Host from user;


grant all privileges oncloudservicedb.*  to 'cloudservice'@'%';










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版权声明
本文为[潇湘梦]所创,转载请带上原文链接,感谢
https://blog.csdn.net/iteye_9328/article/details/107324681