mysql grant权限分配_MySQL
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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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