MySQL 8.0 修改root远程登录【ERROR 1410 (42000): You are not allowed to create a user with GRANT】

MySQL 8.0的数据库root用户默认无法远程登录，需要修改root的远程授权，如下：

mysql> grant all privileges on *.* to 'root'@'%';

ERROR 1410 (42000): You are not allowed to create a user with GRANT

mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> update user set host='%' where user='root';
Query OK, 1 row affected (0.00 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> grant all privileges on *.* to 'root'@'%';
Query OK, 0 rows affected (0.02 sec)

mysql> select user,host from user;
+------------------+-----------+
| user             | host      |
+------------------+-----------+
| root             | %         |
| mysql.infoschema | localhost |
| mysql.session    | localhost |
| mysql.sys        | localhost |
+------------------+-----------+
8 rows in set (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

mysql> exit
Bye