首先让我提一下,我已经看了很多建议的问题,但没有找到相关的答案。这就是我正在做的。

我连接到Amazon EC2实例。我可以用这个命令登录MySQL根目录:

mysql -u root -p

然后我用host %创建了一个新的用户帐单

CREATE USER 'bill'@'%' IDENTIFIED BY 'passpass';

授予用户bill的所有权限:

grant all privileges on *.* to 'bill'@'%' with grant option;

然后我退出root用户,尝试用bill登录:

mysql -u bill -p

输入正确的密码并得到以下错误:

错误1045(28000):用户“账单”@“localhost”(使用密码:YES)的访问被拒绝


当前回答

如果您忘记密码或想修改密码。你可以遵循以下步骤:

1 :stop your mysql [root@maomao ~]# service mysqld stop Stopping MySQL: [ OK ] 2 :use “--skip-grant-tables” to restart mysql [root@mcy400 ~]# mysqld_safe --skip-grant-tables [root@cy400 ~]# Starting mysqld daemon with databases from /var/lib/mysql 3 : open a new window and input mysql -u root [root@cy400 ~]# mysql -u root Welcome to the MySQL monitor. Commands end with ; or \g. 4 : change the user database mysql> use mysql Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed 5 : modify your password your new password should be input in "()" mysql> update user set password=password('root123') where user='root'; Query OK, 3 rows affected (0.00 sec) Rows matched: 3 Changed: 3 Warnings: 0 6 : flush mysql> flush privileges; 7: quit mysql> quit Bye 8: restart mysql [root@cy400 ~]# service mysqld restart; Stopping MySQL: [ OK ] Starting MySQL: [ OK ]

宾果!你可以用用户名和新密码连接你的数据库:

[root@cy400 ~]# mysql -u root -p <br>
Enter password: admin123 <br>
Welcome to the MySQL monitor.  Commands end with ; or \g. <br>
Your MySQL connection id is 2 <br>
Server version: 5.0.77 Source distribution <br>
Type 'help;' or '\h' for help. Type '\c' to clear the buffer. <br>
mysql> quit <br>
Bye

其他回答

sudo -i 
mysql -u root
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'root';

访问mysql服务不需要登录(可以看到因为在shell mysql>)

在Windows上,解决方法如下:

错误1045(28000):拒绝访问用户'root'@'localhost'(使用密码:NO)

从控制面板卸载mysql 删除C:\Program Files,C:\Program Files (x86)和C:\ProgramData目录下的MySql文件夹 安装mysql

解决方案是删除匿名(Any)用户!

我在别人设置的服务器上也遇到了同样的问题。我通常不选择在安装MySQL时创建一个匿名用户,所以没有注意到这一点。最初,我以“root”用户登录,并创建了几个“正常”用户(也就是仅在dbs上以用户名作为前缀的用户),然后注销,然后继续验证第一个正常用户。我无法登录。既不通过phpMyAdmin,也不通过shell。事实证明,罪魁祸首是这个“任意”用户。

这可能只适用于少数人,但事实就是这样。不要用感叹号!在你的密码里。

我做到了,并使用MariaDB得到了上述错误。当我把它简化成数字和字母时,它是可行的。其他字符,如@和$工作得很好-我在同一实例的不同用户中使用了这些字符。

这个地址的第五次回复让我找到了解决办法。

I discovered yet another case that appears on the surface to be an edge case; I can export to the file system, via SELECT INTO .. OUTFILE as root, but not as regular user. While this may be a matter of permissions, I've looked at that, and see nothing especially obvious. All I can say is that executing the query as a regular user who has all permissions on the data base in question returns the access denied error that led me to this topic. When I found the transcript of a successful use of SELECT INTO … OUTFILE in an old project, I noticed that I was logged in as root. Sure enough, when I logged in as root, the query ran as expected.