摘要：安装mycheckpoint的时候，给这个监控用户分权限的时候，发现了这个秘密：mysql> mysql> GRANT ALL PRIVILEGES ON mycheckpoint.* TO 'mycheckpoint_user'@'localhost' IDENTIFIED BY '123456'; ERROR 1470 (HY000): String 'mycheckpoint_user' is too long for user name (should be no longer than 16)mysql> 阅读全文