mysqldump報錯-Got error: 1449

mysqldump -uroot -pPasswd DBName >/home/lsf/DB_Backup.sql

報錯，顯示：

Got error: 1449: The user specified as a definer ('root'@'') does not exist when using LOCK TABLES

或者直接：the user specified as a definer ('root'@'') does not exist

解決辦法：

給root用戶再添加一個對所有host都有能夠訪問的權限：

mysql -uroot -pPasswd

mysql >grant all privileges on *.* to root@"%" identified by "Passwd";

mysql >flush privileges;