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:
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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)
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用户B的权限:
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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)
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以用户B的身份登陆Mysql操作;
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[root@mysql ~]# mysql -h10.0.10.110 -uswper -p123456
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查存储过程列表时就提示没有权限了:
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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'
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以root身份给B用户添加一个查看存储过程的权限:
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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:
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mysql> select ` name ` from mysql.proc where db = 'OTO3' and `type` = 'PROCEDURE' ;
+ ------------------------+
| name |
+ ------------------------+
| proc_cs |
+ ------------------------+
1 rows in set (0.00 sec)
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此时发现多了一个mysql库,但只有对mysql.proc有查询权限:
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mysql> show databases;
+ --------------------+
| Database |
+ --------------------+
| information_schema |
| OTO3 |
| mysql |
+ --------------------+
3 rows in set (0.00 sec)
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mysql库中只有一个表:proc
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mysql> use mysql
mysql> show tables;
+ -----------------+
| Tables_in_mysql |
+ -----------------+
| proc |
+ -----------------+
1 row in set (0.00 sec)
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同样也可以看到存储过程的详细信息:
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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
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尝试修改存储过程的配置:
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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'
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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:
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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)
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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:
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mysql> grant CREATE ROUTINE on OTO3.* to 'b' @ '%' ;
Query OK, 0 rows affected (0.00 sec)
|
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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)
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上面添加权限后就可以创建存储过程了;
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CREATE DEFINER=`b`@`%` PROCEDURE `aaaa`()
BEGIN
#Routine body goes here...
SELECT * from mysql. user ;
END
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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;
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mysql> grant alter ROUTINE on OTO3.* to 'b' @ '%' ;
Query OK, 0 rows affected (0.01 sec)
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查看用户权限
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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:
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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)
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尝试添加一下这个SUPER权限看看:
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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)
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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;
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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)
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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;
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mysql> select * from mysql. user where user = 'b' \G
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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;
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mysql> show databases;
+ --------------------+
| Database |
+ --------------------+
| information_schema |
| OTO3 |
| mysql |
+ --------------------+
3 rows in set (0.00 sec)
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仔细观看会发现执行语句:
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mysql> select * from mysql. user where user = 'b' \G
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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;
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mysql> revoke super on *.* from 'b' @ '%' ;
Query OK, 0 rows affected (0.01 sec)
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再添加Alter_routine_priv,Create_routine_priv
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mysql> grant alter routine, create routine on *.* to 'b' @ '%' ;
Query OK, 0 rows affected (0.00 sec)
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查看用户b权限
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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)
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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]
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mysql> show databases;
+ --------------------+
| Database |
+ --------------------+
| information_schema |
| OTO3 |
| mysql |
| performance_schema |
| sys |
| test |
+ --------------------+
6 rows in set (0.00 sec)
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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
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create routine, alter routine;
mysql> revoke create routine, alter routine on *.* from 'b' @ '%' ;
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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:
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GRANT SELECT ON MYSQL.PROC TO 'B' ;
GRANT EXECUTE , CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'B' ;
GRANT SUPER ON *.* TO 'B' ;
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所以用户B的最基本的权限:
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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)
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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;
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update mysql.proc set DEFINER= 'b' @ '%' WHERE NAME = 'proc_cs' AND db= 'OTO3' ;
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原文链接:https://blog.csdn.net/qq1353424111/article/details/108719985