某个ip段可以访问mysql

我们先创建一个测试用户LimitIP，只允许192.168段的IP地址访问，具体权限如下所示：

mysql> GRANT SELECT ON MyDB.* TO LimitIP@'192.168.%' IDENTIFIED BY 'LimitIP';
Query OK, 0 rows affected (0.01 sec)
  
mysql> GRANT INSERT ,UPDATE,DELETE ON MyDB.kkk TO LimitIP@'192.168.%';
Query OK, 0 rows affected (0.00 sec)
  
mysql> 
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
  
mysql> 
  
mysql> show grants for LimitIP@'192.168.%';
+----------------------------------------------------------------------------------------------------------------+
| Grants for LimitIP@192.168.%                     |
+----------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'LimitIP'@'192.168.%' IDENTIFIED BY PASSWORD '*72DDE03E02CC55A9478A82F3F4EBE7F639249DEC' |
| GRANT SELECT ON `MyDB`.* TO 'LimitIP'@'192.168.%'                |
| GRANT INSERT, UPDATE, DELETE ON `MyDB`.`kkk` TO 'LimitIP'@'192.168.%'           |
+----------------------------------------------------------------------------------------------------------------+
3 rows in set (0.00 sec)
  
mysql>