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Mysql修改存储过程相关权限问题

在使用mysql数据库经常都会遇到这么一个问题,其它用户定义的存储过程,现在使用另一个用户却无法修改或者删除等;正常情况下存储过程的定义者对它有修改、删除的权限;但是其它的用户就要相于的授权,不然无法查看、调用;

mysql 中使用用户A创建一个存储过程,现在想通过另一个用户B来修改A创建的存储过程;以下记录就是基于这样的情况产生的;

用户A对OTO3库的权限:

mysql> show grants for 'a'@'%';
+---------------------------------------------------+
| Grants for a@%                              |
+---------------------------------------------------+
| GRANT USAGE ON *.* TO 'a'@'%'               |
| GRANT ALL PRIVILEGES ON `OTO3`.* TO 'a'@'%' |
+---------------------------------------------------+
2 rows in set (0.00 sec)

用户B的权限:

mysql> show grants for 'swper'@'%';
+----------------------------------------------------------------------+
| Grants for swper@%                                                   |
+----------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'swper'@'%'                                    |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER ON `OTO3`.* TO 'swper'@'%' |
+----------------------------------------------------------------------+
2 rows in set (0.00 sec)

以用户B的身份登陆Mysql操作;

[root@mysql ~]# mysql -h10.0.10.110 -uswper -p123456

查存储过程列表时就提示没有权限了:

mysql> select `name` from mysql.proc where db = 'OTO3' and `type` = 'PROCEDURE';
ERROR 1142 (42000): SELECT command denied to user 'swper'@'mysql' for table 'proc'

以root身份给B用户添加一个查看存储过程的权限:

mysql> grant select on mysql.proc to 'swper'@'%';
Query OK, 0 rows affected (0.00 sec)

mysql> show grants for 'swper'@'%';
+----------------------------------------------------------------------+
| Grants for swper@%                                                   |
+----------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'swper'@'%'                                    |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER ON `OTO3`.* TO 'swper'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'swper'@'%'                        |
+----------------------------------------------------------------------+
3 rows in set (0.00 sec)

再回到B用户里查看存储过程列表:

mysql> select `name` from mysql.proc where db = 'OTO3' and `type` = 'PROCEDURE';
+------------------------+
| name                   |
+------------------------+
| proc_cs                |
+------------------------+
1 rows in set (0.00 sec)

此时发现多了一个mysql库,但只有对mysql.proc有查询权限:

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| OTO3               |
| mysql              |
+--------------------+
3 rows in set (0.00 sec)

mysql库中只有一个表:proc

mysql> use mysql
mysql> show tables;
+-----------------+
| Tables_in_mysql |
+-----------------+
| proc            |
+-----------------+
1 row in set (0.00 sec)

同样也可以看到存储过程的详细信息:

mysql> show create procedure proc_cs\G
*************************** 1. row ***************************
           Procedure: proc_cs
            sql_mode: STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
    Create Procedure: CREATE DEFINER=`a`@`%` PROCEDURE `proc_cs`()
BEGIN

尝试修改存储过程的配置:


mysql> ALTER  PROCEDURE proc_cs   MODIFIES SQL DATA SQL SECURITY INVOKER;
ERROR 1370 (42000): alter routine command denied to user 'b'@'%' for routine 'OTO3.proc_cs'

为了方便查看在Navicat工具上尝试修改存储过程,在保存的时候报如下权限问题:

1227 -Access denied;you need(at least one of)the SUPER privilege(s) for this operation

尝试添加一个存储过程,报权限信息:

1044 - Access denied for user ‘b’@’%’ to database ‘OTO3’

这里表示b用户没有对OTO3有授权存储过程的修改权限;

以B用户尝试调用一下存储过程:

Procedure execution failed
1370 - execute command denied to user ‘b’@’%’ for routine ‘OTO3.proc_cs’

这里很明显连运行权限也没有;

尝试删除原有的a用户定义的存储过程,也会报权限信息,如下:

1370 - alter routine command denied to user ‘b’@’%’ for routine ‘OTO3.proc_cs’

可以看出B用户连调用存储过程的权限都没有,这里先加入执行权限:

接下来添加一个执行存储过程的权限:

mysql> grant execute on OTO3.* to 'b'@'%';
Query OK, 0 rows affected (0.00 sec)

mysql> show grants for 'b'@'%';
+-------------------------------------------------------------------------------+
| Grants for b@%                                                            |
+-------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'b'@'%'                                             |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER, EXECUTE ON `OTO3`.* TO 'b'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'b'@'%'                                 |
+-------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

再次执行一下存储过程,发现成功了;

时间: 0.080ms
Procedure executed successfully
受影响的行: 0

那再添加一下创建添加存储过程的权限:

mysql> grant CREATE ROUTINE on OTO3.* to 'b'@'%';
Query OK, 0 rows affected (0.00 sec)
mysql> show grants for 'b'@'%';
+-----------------------------------------------------------------------------------------------+
| Grants for b@%                                                                            |
+-----------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'b'@'%'                                                            |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER, EXECUTE, CREATE ROUTINE ON `OTO3`.* TO 'b'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'b'@'%'                                                 |
+-----------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

上面添加权限后就可以创建存储过程了;

CREATE DEFINER=`b`@`%` PROCEDURE `aaaa`()
BEGIN
    #Routine body goes here...
SELECT * from mysql.user;
END

但是自己创建的都无法删除;

1370 - alter routine command denied to user ‘b’@’%’ for routine ‘OTO3.aaaa’

接下来再添加一个修改的权限,也可以删除的哦;

mysql> grant alter ROUTINE on OTO3.* to 'b'@'%';
Query OK, 0 rows affected (0.01 sec)

查看用户权限

mysql> show grants for 'b'@'%';
+--------------------------------------------------------------------------------------------------------------+
| Grants for b@%                                                                                           |
+--------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'b'@'%'                                                                            |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER, EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'b'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'b'@'%'                                                                |
+--------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

上面添加完alter ROUTINE权限后就可以对OTO3所有的存储过程有删除权限[自己定义的增、删、改],别人定义的可以删除,但是还不能修改;修改别人定义的存储过程会有如下提示:

1227 - Access denied; you need (at least one of)the SUPER privilege(s) for this operation

这里说明一下这个SUPER权限在哪里?通过查看用户权限原来在这里:

mysql> select * from mysql.user where user='b'\G
*************************** 1. row ***************************
                  Host: %
                  User: b
           Select_priv: N
           Insert_priv: N
           Update_priv: N
           Delete_priv: N
           Create_priv: N
             Drop_priv: N
           Reload_priv: N
         Shutdown_priv: N
          Process_priv: N
             File_priv: N
            Grant_priv: N
       References_priv: N
            Index_priv: N
            Alter_priv: N
          Show_db_priv: N
            Super_priv: N
 Create_tmp_table_priv: N
      Lock_tables_priv: N
          Execute_priv: N
       Repl_slave_priv: N
      Repl_client_priv: N
      Create_view_priv: N
        Show_view_priv: N
   Create_routine_priv: N
    Alter_routine_priv: N
      Create_user_priv: N
            Event_priv: N
          Trigger_priv: N
Create_tablespace_priv: N
              ssl_type:
            ssl_cipher:
           x509_issuer:
          x509_subject:
         max_questions: 0
           max_updates: 0
       max_connections: 0
  max_user_connections: 0
                plugin: mysql_native_password
 authentication_string: *CCB4F88E945E0E14F9BEB093EB797BB0BDBFA175
      password_expired: N
 password_last_changed: 2017-03-06 11:37:35
     password_lifetime: NULL
        account_locked: N
1 row in set (0.00 sec)

尝试添加一下这个SUPER权限看看:

mysql> grant SUPER on OTO3.* to 'b'@'%';
ERROR 1221 (HY000): Incorrect usage of DB GRANT and GLOBAL PRIVILEGES

mysql> grant SUPER on *.* to 'b'@'%';
Query OK, 0 rows affected (0.00 sec)

不能对指定的库执行这个权限,因为SUPER为全局的就是整个mysql的权限;

mysql> show grants for 'swper'@'%';
+--------------------------------------------------------------------------------------------------------------+
| Grants for swper@%                                                                                           |
+--------------------------------------------------------------------------------------------------------------+
| GRANT SUPER ON *.* TO 'swper'@'%'                                                                            |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER, EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'swper'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'swper'@'%'                                                                |
+--------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

再次检查时会发现 Super_priv: Y 变化了;再修改一下别人定义的存储过程;

mysql> select * from mysql.user where user='b'\G

查看所有数据库,发现mysql库只有一张proc表有读取的权限,SUPER并非我所想象中那么强大;

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| OTO3               |
| mysql              |
+--------------------+
3 rows in set (0.00 sec)

仔细观看会发现执行语句:

mysql> select * from mysql.user where user='b'\G

可以看到有 Create_routine_priv: N和 Alter_routine_priv: N 这两个明显就是对存储过程的权限嘛,能不能不用SUPER而使用这两个权限呢?

回收一下这个SUPER权限;

mysql> revoke super on *.* from 'b'@'%';
Query OK, 0 rows affected (0.01 sec)

再添加Alter_routine_priv,Create_routine_priv

mysql> grant alter routine,create routine on *.* to 'b'@'%';
Query OK, 0 rows affected (0.00 sec)

查看用户b权限

mysql> show grants for 'b'@'%';
+--------------------------------------------------------------------------------------------------------------+
| Grants for b@%                                                                                           |
+--------------------------------------------------------------------------------------------------------------+
| GRANT CREATE ROUTINE, ALTER ROUTINE ON *.* TO 'b'@'%'                                                    |
| GRANT SELECT, UPDATE, DELETE, DROP, ALTER, EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'b'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'b'@'%'                                                                |
+--------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

发现还是报相同的权限问题:

1227 - Access denied; you need (at least one of)the SUPER privilege(s) for this operation

执行上面权限后发现,可以看到其它的系统库:[例如sys库也有存储过程,由于这两个权限是全局的]

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| OTO3               |
| mysql              |
| performance_schema |
| sys                |
| test               |
+--------------------+
6 rows in set (0.00 sec)

这两个权限更大,连系统库sys中的存储过程都能看到,甚至修改删除,非常危险;决定再次回收权限

create routine,alter routine;
mysql> revoke create routine,alter routine on *.* from 'b'@'%';

还是使用SUPER权限比较安全;

通过上面的测试得出以下结论:

  • 查看存储过程权限:SELECT #是对mysql.proc表的权限;
  • 执行存储过程权限:EXECUTE #是对指定数据库的权限;
  • 创建存储过程权限:CREATE ROUTINE #是对指定数据库的权限;
  • 修改存储过程权限:ALTER ROUTINE #是对指定数据库的中自己定义的存储过程;
  • 修改别人定义的存储过程权限:SUPER #是对全局整个mysql的权限;

简来说用户A在数据库OTO3中定义了一个存储过程,现在想用用户B来执行、修改存储过程,需要对用户B添加以下权限:

GRANT SELECT ON MYSQL.PROC TO 'B';
GRANT EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'B';
GRANT SUPER ON *.* TO 'B';

所以用户B的最基本的权限:

mysql> show grants for 'b'@'%';
+----------------------------------------------------------------------------------------+
| Grants for b@%                                                                     |
+----------------------------------------------------------------------------------------+
| GRANT SUPER ON *.* TO 'b'@'%'                                                      |
| GRANT SELECT, ALTER, EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'b'@'%' |
| GRANT SELECT ON `mysql`.`proc` TO 'b'@'%'                                          |
+----------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)

至此,对于Mysql中以另的用户修改其它人定义的存储过程权限也就非常的显白了;

如果不是以另一个用户身份调用存储过程,可以使用root权限修改存储过程的定义者; 这样就等于linux里的所有者权限变更了;

update mysql.proc set DEFINER='b'@'%' WHERE NAME='proc_cs' AND db='OTO3';

提醒:本文最后更新于 836 天前,文中所描述的信息可能已发生改变,请谨慎使用。