Mysql修改存儲(chǔ)過(guò)程相關(guān)權(quán)限問(wèn)題
在使用mysql數(shù)據(jù)庫(kù)經(jīng)常都會(huì)遇到這么一個(gè)問(wèn)題，其它用戶定義的存儲(chǔ)過(guò)程，現(xiàn)在使用另一個(gè)用戶卻無(wú)法修改或者刪除等；正常情況下存儲(chǔ)過(guò)程的定義者對(duì)它有修改、刪除的權(quán)限；但是其它的用戶就要相于的授權(quán)，不然無(wú)法查看、調(diào)用；
mysql 中使用用戶A創(chuàng)建一個(gè)存儲(chǔ)過(guò)程,現(xiàn)在想通過(guò)另一個(gè)用戶B來(lái)修改A創(chuàng)建的存儲(chǔ)過(guò)程；以下記錄就是基于這樣的情況產(chǎn)生的；
用戶A對(duì)OTO3庫(kù)的權(quán)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)
用戶B的權(quán)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)
以用戶B的身份登陸Mysql操作；
[root@mysql ~]# mysql -h10.0.10.110 -uswper -p123456
查存儲(chǔ)過(guò)程列表時(shí)就提示沒(méi)有權(quán)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身份給B用戶添加一個(gè)查看存儲(chǔ)過(guò)程的權(quán)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用戶里查看存儲(chǔ)過(guò)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)
此時(shí)發(fā)現(xiàn)多了一個(gè)mysql庫(kù)，但只有對(duì)mysql.proc有查詢權(quán)限：
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | OTO3 | | mysql | +--------------------+ 3 rows in set (0.00 sec)
mysql庫(kù)中只有一個(gè)表：proc
mysql> use mysql mysql> show tables; +-----------------+ | Tables_in_mysql | +-----------------+ | proc | +-----------------+ 1 row in set (0.00 sec)
同樣也可以看到存儲(chǔ)過(guò)程的詳細(xì)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
嘗試修改存儲(chǔ)過(guò)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'
為了方便查看在Navicat工具上嘗試修改存儲(chǔ)過(guò)程，在保存的時(shí)候報(bào)如下權(quán)限問(wèn)題：
1227 -Access denied;you need(at least one of)the SUPER privilege(s) for this operation
嘗試添加一個(gè)存儲(chǔ)過(guò)程，報(bào)權(quán)限信息：
1044 - Access denied for user ‘b'@'%' to database ‘OTO3'
這里表示b用戶沒(méi)有對(duì)OTO3有授權(quán)存儲(chǔ)過(guò)程的修改權(quán)限；
以B用戶嘗試調(diào)用一下存儲(chǔ)過(guò)程：
Procedure execution failed
1370 - execute command denied to user ‘b'@'%' for routine ‘OTO3.proc_cs'
這里很明顯連運(yùn)行權(quán)限也沒(méi)有；
嘗試刪除原有的a用戶定義的存儲(chǔ)過(guò)程，也會(huì)報(bào)權(quán)限信息，如下：
1370 - alter routine command denied to user ‘b'@'%' for routine ‘OTO3.proc_cs'
可以看出B用戶連調(diào)用存儲(chǔ)過(guò)程的權(quán)限都沒(méi)有，這里先加入執(zhí)行權(quán)限：
接下來(lái)添加一個(gè)執(zhí)行存儲(chǔ)過(guò)程的權(quán)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)
再次執(zhí)行一下存儲(chǔ)過(guò)程，發(fā)現(xiàn)成功了；
時(shí)間: 0.080ms
Procedure executed successfully
受影響的行: 0
那再添加一下創(chuàng)建添加存儲(chǔ)過(guò)程的權(quán)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)
上面添加權(quán)限后就可以創(chuàng)建存儲(chǔ)過(guò)程了;
CREATE DEFINER=`b`@`%` PROCEDURE `aaaa`() BEGIN #Routine body goes here... SELECT * from mysql.user; END
但是自己創(chuàng)建的都無(wú)法刪除；
1370 - alter routine command denied to user ‘b'@'%' for routine ‘OTO3.aaaa'
接下來(lái)再添加一個(gè)修改的權(quán)限，也可以刪除的哦；
mysql> grant alter ROUTINE on OTO3.* to 'b'@'%'; Query OK, 0 rows affected (0.01 sec)
查看用戶權(quán)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權(quán)限后就可以對(duì)OTO3所有的存儲(chǔ)過(guò)程有刪除權(quán)限[自己定義的增、刪、改]，別人定義的可以刪除，但是還不能修改；修改別人定義的存儲(chǔ)過(guò)程會(huì)有如下提示：
1227 - Access denied; you need (at least one of)the SUPER privilege(s) for this operation
這里說(shuō)明一下這個(gè)SUPER權(quán)限在哪里？通過(guò)查看用戶權(quán)限原來(lái)在這里：
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)
嘗試添加一下這個(gè)SUPER權(quán)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)
不能對(duì)指定的庫(kù)執(zhí)行這個(gè)權(quán)限，因?yàn)镾UPER為全局的就是整個(gè)mysql的權(quán)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)
再次檢查時(shí)會(huì)發(fā)現(xiàn) Super_priv: Y 變化了；再修改一下別人定義的存儲(chǔ)過(guò)程；
mysql> select * from mysql.user where user='b'\G
查看所有數(shù)據(jù)庫(kù)，發(fā)現(xiàn)mysql庫(kù)只有一張proc表有讀取的權(quán)限，SUPER并非我所想象中那么強(qiáng)大；
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | OTO3 | | mysql | +--------------------+ 3 rows in set (0.00 sec)
仔細(xì)觀看會(huì)發(fā)現(xiàn)執(zhí)行語(yǔ)句：
mysql> select * from mysql.user where user='b'\G
可以看到有 Create_routine_priv: N和 Alter_routine_priv: N 這兩個(gè)明顯就是對(duì)存儲(chǔ)過(guò)程的權(quán)限嘛，能不能不用SUPER而使用這兩個(gè)權(quán)限呢？
回收一下這個(gè)SUPER權(quán)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)
查看用戶b權(quán)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)
發(fā)現(xiàn)還是報(bào)相同的權(quán)限問(wèn)題：
1227 - Access denied; you need (at least one of)the SUPER privilege(s) for this operation
執(zhí)行上面權(quán)限后發(fā)現(xiàn)，可以看到其它的系統(tǒng)庫(kù)：[例如sys庫(kù)也有存儲(chǔ)過(guò)程，由于這兩個(gè)權(quán)限是全局的]
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | OTO3 | | mysql | | performance_schema | | sys | | test | +--------------------+ 6 rows in set (0.00 sec)
這兩個(gè)權(quán)限更大，連系統(tǒng)庫(kù)sys中的存儲(chǔ)過(guò)程都能看到，甚至修改刪除，非常危險(xiǎn)；決定再次回收權(quán)限
create routine,alter routine； mysql> revoke create routine,alter routine on *.* from 'b'@'%';
還是使用SUPER權(quán)限比較安全；
通過(guò)上面的測(cè)試得出以下結(jié)論：
- 查看存儲(chǔ)過(guò)程權(quán)限：SELECT #是對(duì)mysql.proc表的權(quán)限；
- 執(zhí)行存儲(chǔ)過(guò)程權(quán)限：EXECUTE #是對(duì)指定數(shù)據(jù)庫(kù)的權(quán)限；
- 創(chuàng)建存儲(chǔ)過(guò)程權(quán)限：CREATE ROUTINE #是對(duì)指定數(shù)據(jù)庫(kù)的權(quán)限；
- 修改存儲(chǔ)過(guò)程權(quán)限：ALTER ROUTINE #是對(duì)指定數(shù)據(jù)庫(kù)的中自己定義的存儲(chǔ)過(guò)程；
- 修改別人定義的存儲(chǔ)過(guò)程權(quán)限：SUPER #是對(duì)全局整個(gè)mysql的權(quán)限；
簡(jiǎn)來(lái)說(shuō)用戶A在數(shù)據(jù)庫(kù)OTO3中定義了一個(gè)存儲(chǔ)過(guò)程，現(xiàn)在想用用戶B來(lái)執(zhí)行、修改存儲(chǔ)過(guò)程,需要對(duì)用戶B添加以下權(quán)限：
GRANT SELECT ON MYSQL.PROC TO 'B'; GRANT EXECUTE, CREATE ROUTINE, ALTER ROUTINE ON `OTO3`.* TO 'B'; GRANT SUPER ON *.* TO 'B';
所以用戶B的最基本的權(quán)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，對(duì)于Mysql中以另的用戶修改其它人定義的存儲(chǔ)過(guò)程權(quán)限也就非常的顯白了；
如果不是以另一個(gè)用戶身份調(diào)用存儲(chǔ)過(guò)程，可以使用root權(quán)限修改存儲(chǔ)過(guò)程的定義者; 這樣就等于linux里的所有者權(quán)限變更了；
update mysql.proc set DEFINER='b'@'%' WHERE NAME='proc_cs' AND db='OTO3';
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