mysql - 如何限制来自特定主机的查询

Question

如何确保“anil”无法从任何名为“%desk%”的计算机运行命令？

mysql> show grants for anil;

+------------------------------------------------------------------------------------+
| Grants for anil@%                                                                  |
+------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'anil'@'%'                                                   |
| GRANT SELECT, CREATE TEMPORARY TABLES, LOCK TABLES ON `production`.* TO 'anil'@'%' |
+------------------------------------------------------------------------------------+


mysql> revoke all privileges, grant option from 'anil'@'%desk%';
ERROR 1269 (HY000): Can't revoke all privileges for one or more of the requested users

mysql> revoke usage on *.* from 'anil'@'%desk%';
ERROR 1141 (42000): There is no such grant defined for user 'anil' on host '%desk%'

mysql> revoke SELECT, CREATE TEMPORARY TABLES, LOCK TABLES ON `production`.* from 'anil'@'%desk%';
ERROR 1141 (42000): There is no such grant defined for user 'anil' on host '%desk%'

Answer 1

MySQL 只允许您授予权限，它没有能力授予除特定主机之外的所有权限，或者以这种方式根据主机名拒绝权限你正在尝试。实现此目的的唯一方法是仅向用户授予可接受主机名的权限。 REVOKE 命令仅删除之前GRANT授予的权限。

如果您的网络恰好分为子域 [即:*.desk.company.tld 和 *.serv.company.tld]，您应该能够向 'anil'@'%.serv 授予权限.company.tld' 或类似的子网:'anil'@'192.168.1.%'。