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
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.
其他回答
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
我通过删除旧的错误用户“账单”条目来解决这个问题(这是重要的部分:都来自mysql。用户和mysql.db)，然后创建和前面一样的用户:
FLUSH PRIVILEGES;
CREATE USER bill@localhost IDENTIFIED BY 'passpass';
grant all privileges on *.* to bill@localhost with grant option;
FLUSH PRIVILEGES;
工作完毕，用户正在连接。现在我将删除一些特权从它:)
Try:
~$ mysql -u root -p
Enter Password:
mysql> grant all privileges on *.* to bill@localhost identified by 'pass' with grant option;
不确定其他人是否会发现这有帮助，但我遇到了同样的错误，并搜索任何匿名用户…但实际上并没有。问题最终是用户帐户被设置为“要求SSL”-这是我在PHPMyAdmin通过进入用户帐户并单击编辑用户的权限发现的。只要我取消了这个选项，一切都按预期工作!
所以对我来说，这个问题与我映射的端口有关。
3306 => 3306不工作(因为我有一个本地mysql运行)
3307 => 3306工作!
这是在建立ssh隧道的上下文中:
ssh -N -L 3307:rdsDns:3306 ec2User@ec2Dns -i key.pem -v
3307为本端端口，3306为远端端口。
