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MySQL grant

  • 授权

      // MySQL8 创建用户和赋予权限必须分开
  CREATE USER 'mysql221'@'192.168.252.221' IDENTIFIED BY 'mysql_221';
  GRANT ALL PRIVILEGES ON *.* TO 'username'@'ip address'；
  // MySQL8之前版本可以写到一起
  GRANT ALL PRIVILEGES ON *.* TO 'username'@'ip address' IDENTIFIED BY 'user password';
  GRANT ALL PRIVILEGES ON db_name.* TO 'username'@'ip address' IDENTIFIED BY 'user password';
  GRANT ALL PRIVILEGES ON db_name.table_name TO 'username'@'ip address' IDENTIFIED BY 'user password';
  // 赋予部分权限
  GRANT select,insert,update,delete ON db_name.* TO 'username'@'ip address' IDENTIFIED BY 'user password' WITH GRANT OPTION;

  • 取消授权

      REVOKE ALTER ON *.* FROM 'username'@'ip address' IDENTIFIED BY 'user password';
  REVOKE select,insert,update,delete ON db_name.* FROM 'username'@'ip address' IDENTIFIED BY 'user password';

  • 刷新权限，让修改生效

      FLUSH PRIVILEGES;

  • 查看某个用户的权限

      mysql> show grants for lcpeng;
  +------------------------------------+
  | Grants for lcpeng@%                |
  +------------------------------------+
  | GRANT USAGE ON *.* TO 'lcpeng'@'%' |
  +------------------------------------+
  1 row in set (0.00 sec)
  
  
  mysql> show grants for lcpeng@192.168.3.128;
  +----------------------------------------------------------------------------------------------------------+
  | Grants for lcpeng@192.168.3.128                                                                         |
  +----------------------------------------------------------------------------------------------------------+
  | GRANT USAGE ON *.* TO 'lcpeng'@'192.168.3.128'                                                          |
  | GRANT SELECT, INSERT, UPDATE, DELETE ON `chengshi_wuye`.* TO 'lcpeng'@'192.168.3.128' WITH GRANT OPTION |
  +----------------------------------------------------------------------------------------------------------+
  2 rows in set (0.00 sec)
  
  mysql> 

  mysql> SELECT * FROM information_schema.user_privileges WHERE grantee LIKE "'lcpeng'%";
  +---------------------------+---------------+----------------+--------------+
  | GRANTEE                   | TABLE_CATALOG | PRIVILEGE_TYPE | IS_GRANTABLE |
  +---------------------------+---------------+----------------+--------------+
  | 'lcpeng'@'10.25.88.145'   | def           | USAGE          | NO           |
  | 'lcpeng'@'10.25.88.146'   | def           | USAGE          | NO           |
  | 'lcpeng'@'%'              | def           | USAGE          | NO           |
  +---------------------------+---------------+----------------+--------------+
  3 rows in set (0.00 sec)