Question

我创建了用户'wordpress'并通过phpMyAdmin在mysql中授予了权限。但是，当我作为用户wordpress登录命令行时，我似乎无法访问我应该能够访问的内容。看看：

>mysql -u wordpress
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.27 MySQL Community Server (GPL)

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> SHOW GRANTS;
+--------------------------------------+
| Grants for @localhost                |
+--------------------------------------+
| GRANT USAGE ON *.* TO ''@'localhost' |
+--------------------------------------+
1 row in set (0.00 sec)

这不应该显示Grants for wordpress@localhost吗？

此外，我在数据库sitedb上授予所有（危险，我知道，但我是健全性测试）wordpress的权利。当我尝试使用sitedb（在同一个会话中）时，我得到以下内容：

mysql> USE sitedb;
ERROR 1044 (42000): Access denied for user ''@'localhost' to database 'sitedb'

怎么了？

Answer 1

看起来创建mysql用户时出现了一些错误，我建议你从终端创建用户和授予权限。

Answer 2

来自MySQL文档：

USAGE特权说明符代表“没有特权。”

您的用户看起来没有正确的权限。您确定您为正确的数据库授予了正确用户的所有权限吗？尝试专门授予sitedb数据库的所有权限。

Answer 3

我明白了......

我以root身份登录并检查了root的priveleges以及它与wordpress的不同之处：

mysql> SHOW GRANTS;
+---------------------------------------------------------------------+
| Grants for root@localhost                                           |
+---------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' WITH GRANT OPTION |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION        |
+---------------------------------------------------------------------+
2 rows in set (0.00 sec)

mysql> SHOW GRANTS FOR wordpress;
+-----------------------------------------------------------------------------+
| Grants for wordpress@%                                                      |
+-----------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'wordpress'@'%' WITH GRANT OPTION            |
| GRANT ALL PRIVILEGES ON `skytreader`.* TO 'wordpress'@'%' WITH GRANT OPTION |
+-----------------------------------------------------------------------------+
2 rows in set (0.00 sec)

目前，我能收集的唯一区别是主持人。我回到phpMyAdmin更改用户wordpress的主机并将其指定为'localhost'。而且，

>mysql -u wordpress
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 42
Server version: 5.5.27 MySQL Community Server (GPL)

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> SHOW GRANTS;
+-------------------------------------------------------------------------------------+
| Grants for wordpress@localhost                                                      |
+-------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'wordpress'@'localhost' WITH GRANT OPTION            |
| GRANT ALL PRIVILEGES ON `skytreader`.* TO 'wordpress'@'localhost' WITH GRANT OPTION |
+-------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)

mysql> USE sitedb;
Database changed

现在我想知道为什么会这样？是不是'wordpress'@'％'应该代表外卡主机（所以它应该包括localhost）？我猜这是某种安全功能......

在mysql上指定用户名会将我记录为''

3 个答案: