mysql8.0无法给用户授权或提示You are not allowed to create a user with GRANT的问题

mysql> CREATE USER 'root'@'%' IDENTIFIED BY 'Hadoop3!';
Query OK, 0 rows affected (0.04 sec)

mysql> grant all privileges on *.* to 'root'@'%';
Query OK, 0 rows affected (0.03 sec)

另外，如果远程连接的时候报plugin caching_sha2_password could not be loaded这个错误，可以尝试修改密码加密插件：

 mysql> alter user 'root'@'%' identified with mysql_native_password by 'Hadoop3!';