来源：自学PHP网 时间：2015-04-16 10:51 作者： 阅读:次
[导读] [MySQL故障] ERROR 1045 (28000): Access denied for user 39;mmm_agent 39;@ 39;exxx-tx com 39; (using password: YES)1 error登陆错误[python][uxxx@exxx-0702 ~]$ mysql -hexxx-tx com...
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[MySQL故障] ERROR 1045 (28000): Access denied for user 'mmm_agent'@'exxx-tx.com' (using password: YES)
1 error登陆错误
[python]
[uxxx@exxx-0702 ~]$ mysql -hexxx-tx.com --user='mmm_agent' --password='#tx$'
ERROR 1045 (28000): Access denied for user 'mmm_agent'@'exxx-tx.com' (using password: YES)
2 去掉-h参数,能顺利登陆
[python]
[uxxx@exxx-0702 ~]$ mysql --user='mmm_agent' --password='#tx$'
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 491
Server version: 5.x.xa-log MySQL tx Reltxse
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to cltxr the current input statement.
mysql>
3 难道是对于-h参数有限制?我换个用户试试看
[sql]
mysql> GRANT ALL PRIVILEGES ON *.* TO 'mg'@'%' IDENTIFIED BY '#tx$';
Query OK, 0 rows affected (0.01 sec)
mysql> exit
[uxxx@exxx-0702 ~]$ mysql -hexxx-tx.com --user='mg' --password='#tx$'
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 965
Server version: 5.x.xa-log MySQL tx Reltxse
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 cltxr the current input statement.
mysql>
看来不是对于-h参数的限制问题，应该是别的故障，密码是OK的。
4 去查看mmm_agent用户吧。
[sql]
mysql> select user,host from mysql.user where user='mmm_agent';
+-----------+------+
| user | host |
+-----------+------+
| mmm_agent | % |
| mmm_agent | 10.% |
+-----------+------+
2 rows in set (0.00 sec)
mysql> show grants for mmm_agent@'%';
+-------------------------------------------------------------------------------------------------------------------+
| Grants for mmm_agent@% |
+-------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'mmm_agent'@'%' IDENTIFIED BY PASSWORD '*77074D8AC9603904375ED54F1D2E14CDACB7842F' |
+-------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
mysql> show grants for mmm_agent@'10.%';
+--------------------------------------------------------------------------------------------------------------------------------------------------+
| Grants for mmm_agent@10.% |
+--------------------------------------------------------------------------------------------------------------------------------------------------+
| GRANT RELOAD, PROCESS, SUPER, REPLICATION CLIENT ON *.* TO 'mmm_agent'@'10.%' IDENTIFIED BY PASSWORD '*6745119376CF6BD5E0F0A50484A91AE7BD172612' |
| GRANT EXECUTE ON `audit`.* TO 'mmm_agent'@'10.%' |
+--------------------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
mysql>
-- 看到这里有2个帐号，相同 用户名，不同host，而且密码也不相同，那么我将host为10.%的mmm_agent用户的密码修改成与host为%的mmm_agent用户一样的密码，试试看。
[sql]
GRANT RELOAD, PROCESS, SUPER, REPLICATION CLIENT ON *.* TO 'mmm_agent'@'10.%' IDENTIFIED BY '#tx$';
GRANT EXECUTE ON `audit`.* TO 'mmm_agent'@'10.%'
mysql> GRANT RELOAD, PROCESS, SUPER, REPLICATION CLIENT ON *.* TO 'mmm_agent'@'10.%' IDENTIFIED BY '#tx$';
Query OK, 0 rows affected (0.01 sec)
mysql> GRANT EXECUTE ON `audit`.* TO 'mmm_agent'@'10.%'
-> ;
Query OK, 0 rows affected (0.00 sec)
mysql> exit
Bye
[uxxx@exxx-0702 ~]$ mysql -hexxx-tx.com --user='mmm_agent' --password='#tx$'
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1191
Server version: 5.x.xa-log MySQL tx Reltxse
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to cltxr the current input statement.
mysql>
[sql]
-- 用-h参数登陆mysql成功了。
[总结]：
嗯，可以了，使用[uxxx@exxx-0702 ~]$ mysql -hexxx-tx.com --user='mmm_agent' --password='#tx$' 登陆成功了。
mysql在调用-h参数的时候，如果用户名相同，在host的选择上面，先去匹配范围小的用户，在这个案例中, %比10.%的范围要大得多，所以再用 -hexxx-tx.com -ummm_agent访问的时候直接匹配范围小的10.%用户了，而恰巧mmm_agent@'10.%'用户的密码与mmm_agent@'%'用户的密码不是一样的，就报了如下密码错误的提示：
ERROR 1045 (28000): Access denied for user 'mmm_agent'@'%' (using password: YES)
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