新安装了一个mysql,创建了一个新的用户dadmin,授予ALL权限

mysql>GRANT ALL ON *.* TO 'dadmin'@'localhost' IDENTIFIED BY '123456';

mysql>DROP USER 'root'@'localhost';

mysql>DROP USER 'root'@'localhost.localdomain';

mysql>DROP USER 'root'@'::1';

mysql>DROP USER 'root'@'127.0.0.1';

后面才想起来,忘记给'dbaadmin'@'%'远程权限，然后开始授权

mysql> GRANT ALL ON *.* TO 'dadmin'@'%' IDENTIFIED BY '123456';

ERROR 1045 (28000): Access denied for user 'dadmin'@'localhost' (using password: YES)

出现这个问题，这样解决：

mysql>use mysql

mysql> update user set grant_priv = 'Y' where user = 'dadmin';

Query OK, 1 row affected (0.03 sec)

Rows matched: 1  Changed: 1  Warnings: 0

mysql> commit;

Query OK, 0 rows affected (0.00 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.02 sec)

mysql> quit        //退出，再次连接

Bye

[root@localhost ~]# mysql -udadmin -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 171

Server version: 5.6.13-log MySQL Community Server (GPL)

Copyright (c) 2000, 2013, 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> GRANT ALL ON *.* TO 'dadmin'@'%' IDENTIFIED BY '123456';

Query OK, 0 rows affected (0.03 sec)

mysql> show grants for 'dbaadmin'@'%';    //授权成功

+------------------------------------------------------------------------------------------------------------------+

| Grants for dadmin@%                                                                                            |

+------------------------------------------------------------------------------------------------------------------+

| GRANT ALL PRIVILEGES ON *.* TO 'dbaadmin'@'%' IDENTIFIED BY PASSWORD '*ED09FA20652595D6114A30C5045A520B8A39839C' |

+------------------------------------------------------------------------------------------------------------------+

1 row in set (0.00 sec)