MySQL之賬號管理

一 賬號管理

1 創建賬號：

示例 1：

建立賬號zwj，權限為在所有數據庫上具有所有權限

mysql> grant all on *.* to 'zwj'@'192.168.154.180';

Query OK, 0 rows affected (0.01 sec)

為zwj設置密碼

mysql> grant all on *.* to 'zwj'@'192.168.154.180' identified by 'zwj';

Query OK, 0 rows affected (0.00 sec)

示例 2：

建立用戶user01，權限為test庫里所有表進行select、update、insert、delete操作，密碼為"a123"。

mysql> grant select,update,insert,delete on test.* to 'user01'@'192.168.154.%' identified by 'a123';

Query OK, 0 rows affected (0.09 sec)

2 查看權限

查看指定賬戶的權限

mysql> show grants for 'user01'@'192.168.154.%';

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

| Grants for user01@192.168.154.%                                                                                   |

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

| GRANT USAGE ON *.* TO 'user01'@'192.168.154.%' IDENTIFIED BY PASSWORD '*FF680E568727C9C00FABFEE03D13BA727047CC65' |

| GRANT SELECT, INSERT, UPDATE, DELETE ON `test`.* TO 'user01'@'192.168.154.%'                                      |

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

2 rows in set (0.00 sec)

查看當前用戶權限

mysql> show grants;

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

| Grants for root@localhost                                                                                                              |

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

| GRANT ALL PRIVILEGES ON *.* TO 'root'@'localhost' IDENTIFIED BY PASSWORD '*DCB7DF5FFC82C441503300FFF165257BC551A598' WITH GRANT OPTION |

| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION                                                                           |

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

2 rows in set (0.00 sec)

3 更改權限

新建用戶

mysql> grant select on test.* to 'bbs'@'192.168.154.%' identified by 'bbs';

Query OK, 0 rows affected (0.00 sec)

mysql> show grants for 'bbs'@'192.168.154.%';

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

| Grants for bbs@192.168.154.%                                                                                   |

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

| GRANT USAGE ON *.* TO 'bbs'@'192.168.154.%' IDENTIFIED BY PASSWORD '*74BAEAC2CAFC5C7162EF373C5C85EFBC7FC8B803' |

| GRANT SELECT ON `test`.* TO 'bbs'@'192.168.154.%'                                                              |

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

2 rows in set (0.00 sec)

增加權限

mysql> grant select,insert,delete on test.* to 'bbs'@'192.168.154.%';

Query OK, 0 rows affected (0.00 sec)

mysql> show grants for 'bbs'@'192.168.154.%';

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

| Grants for bbs@192.168.154.%                                                                                   |

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

| GRANT USAGE ON *.* TO 'bbs'@'192.168.154.%' IDENTIFIED BY PASSWORD '*74BAEAC2CAFC5C7162EF373C5C85EFBC7FC8B803' |

| GRANT SELECT, INSERT, DELETE ON `test`.* TO 'bbs'@'192.168.154.%'                                              |

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

2 rows in set (0.00 sec)

撤銷權限

mysql> revoke delete,insert on test.* from 'bbs'@'192.168.154.%';

Query OK, 0 rows affected (0.01 sec)

mysql> show grants for 'bbs'@'192.168.154.%';

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

| Grants for bbs@192.168.154.%                                                                                   |

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

| GRANT USAGE ON *.* TO 'bbs'@'192.168.154.%' IDENTIFIED BY PASSWORD '*74BAEAC2CAFC5C7162EF373C5C85EFBC7FC8B803' |

| GRANT SELECT ON `test`.* TO 'bbs'@'192.168.154.%'                                                              |

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

2 rows in set (0.00 sec)

4 修改賬號密碼

方式 1：

mysql> set password for 'bbs'@'192.168.154.%' = password('abc-123');

Query OK, 0 rows affected (0.01 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

方式 2：

mysql> update mysql.user set password=password('aaa') where user='bbs' and host='192.168.154.%';

Query OK, 1 row affected (0.00 sec)

Rows matched: 1  Changed: 1  Warnings: 0

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

方式 3：

[root@localhost tmp]# mysqladmin -u bbs -h 192.168.154.180 password "ccc" -p

Enter password: 

Warning: Using a password on the command line interface can be insecure.

為root初次設置密碼：

[root@www ~]# mysqladmin -uroot password "abc-123"

為root修改密碼：

[root@localhost tmp]# mysqladmin -uroot password 'root' -p

Enter password: 

Warning: Using a password on the command line interface can be insecure.

5 刪除賬戶

mysql> drop user 'bbs'@'192.168.154.%';

Query OK, 0 rows affected (0.00 sec)

mysql> show grants for 'bbs'@'192.168.154.%';

ERROR 1141 (42000): There is no such grant defined for user 'bbs' on host '192.168.154.%'