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mysql grant权限分配_MySQL

Jun 01, 2016 pm 01:37 PM
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mysql grant权限分配

 

密码修改

1、数据库中修改

 

mysql -u root -p 回车   

  

输入密码   

  

mysql> user mysql   

  

mysql> select user,password from user; #查看密码   

  

#可以看到密码41位,直接修改此表不为上策,但是可以通过函数计算密码来修改   

  

mysql> select PASSWORD('abc');   

 

#然后根据具体的条件把密码修改为算出来的值,可要小心哦。  

[c] 

mysql -u root -p 回车  

  

输入密码  

  

mysql> user mysql  

  

mysql> select user,password from user; #查看密码  

  

#可以看到密码41位,直接修改此表不为上策,但是可以通过函数计算密码来修改  

  

mysql> select PASSWORD('abc');  

  

#然后根据具体的条件把密码修改为算出来的值,可要小心哦。  

 

2、命令行中修改root的密码为yourpassword

 

mysqladmin -u root -p PASSWORD yourpassword 回车   

  

输入原来的密码  

[c] 

mysqladmin -u root -p PASSWORD yourpassword 回车  

  

输入原来的密码  

 

3、使用SET PASSWORD,例如:修改root在本地的密码为yourpasswd:

 

mysql> SET PASSWORD FOR root@localhost = PASSWORD('yourpasswd');  

[c] 

mysql> SET PASSWORD FOR root@localhost = PASSWORD('yourpasswd');  

 

4、使用 GRANT ... IDENTIFIED,例如:修改root密码为:youpassword:

 

mysql> GRANT USAGE ON *.* TO root@localhost IDENTIFIED BY 'yourpassword';  

 

grant 权限 on 数据库对象 to 用户

 

一、grant 普通数据用户,查询、插入、更新、删除 数据库中所有表数据的权利。

 

    grant select on testdb.* to common_user@'%'  

    

    grant insert on testdb.* to common_user@'%'  

    

    grant update on testdb.* to common_user@'%'  

    

    grant delete on testdb.* to common_user@'% 

 

或者,用一条 MySQL 命令来替代:

 

    grant select, insert, update, delete on testdb.* to common_user@'%'

 

二、grant 数据库开发人员,创建表、索引、视图、存储过程、函数。。。等权限。

 

grant 创建、修改、删除 MySQL 数据表结构权限。

 

    grant create on testdb.* to developer@'192.168.0.%';  

    

    grant alter on testdb.* to developer@'192.168.0.%';  

    

    grant drop on testdb.* to developer@'192.168.0.%'; 

   

MySQLgrant 操作 MySQL 外键权限。

 

grant references on testdb.* to developer@'192.168.0.%';

 

grant 操作 MySQL 临时表权限。

 

grant create temporary tables on testdb.* to

 

grant 操作 MySQL 索引权限。

 

grant index on testdb.* to 

grant 操作 MySQL 视图、查看视图源代码 权限。

 

grant create view on testdb.* to developer@'192.168.0.%'; 

grant show view on testdb.* to developer@'192.168.0.%';

 

grant 操作 MySQL 存储过程、函数 权限。

 

    grant create routine on testdb.* to developer@'192.168.0.%'; -- now, can show procedure status  

    

    grant alter routine on testdb.* to developer@'192.168.0.%'; -- now, you can drop a procedure  

    

    grant execute on testdb.* to developer@'192.168.0.%'; 

 

三、grant 普通 DBA 管理某个 MySQL 数据库的权限。

 

MySQLgrant all privileges on testdb to

 

其中,关键字 “privileges” 可以省略。

 

    grant execute on procedure testdb.pr_add to 'dba'@'localhost' 

    grant execute on function testdb.fn_add to 'dba'@'localhost' 

    grant all on *.* to dba@'localhost' 

  

五、MySQL grant 权限,分别可以作用在多个层次上。

 

1. grant 作用在整个 MySQL 服务器上:

 

grant select on *.* to dba@localhost; -- dba 可以查询 MySQL 中所有数据库中的表。

 

grant all on *.* to dba@localhost; -- dba 可以管理 MySQL 中的所有数据库

 

2. grant 作用在单个数据库上:

 

grant select on testdb.* to dba@localhost; -- dba 可以查询 testdb 中的表。

 

3. grant 作用在单个数据表上:

 

grant select, insert, update, delete on testdb.orders to

 

4. grant 作用在表中的列上:

 

grant select(id, se, rank) on testdb.apache_log to

 

5.MySQL grant 作用在存储过程、函数上:

 

 

    grant execute on procedure testdb.pr_add to 'dba'@'localhost'  

    

    

    grant execute on function testdb.fn_add to 'dba'@'localhost' 

 

六、查看 MySQL 用户权限

 

查看当前用户(自己)权限:

 

show grants;

 

查看其他 MySQL 用户权限:

 

show grants for dba@localhost;

 

七、撤销已经赋予给 MySQL 用户权限的权限。

 

revoke 跟 grant 的语法差不多,只需要把关键字 “to” 换成 “from” 即可:

 

        grant all on *.* to dba@localhost;  

        

        revoke all on *.* from dba@localhost; 

  

八、MySQL grant、revoke 用户权限注意事项

 

1. grant, revoke 用户权限后,该用户只有重新连接 MySQL 数据库,权限才能生效。

 

2. 如果想让授权的用户,也可以将这些权限 MySQLgrant 给其他用户,需要选项 “grant option“

 

grant select on testdb.* to dba@localhost with grant option;

 

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