Mysql报错：ERROR 1290 (HY000)

执行：

CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';

报错：
ERROR 1290 (HY000): The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement
解决方法：刷新数据库的权限表

> flush privileges;

再次执行：

> CREATE USER 'username'@'localhost' IDENTIFIED BY 'password';

提示成功