錯誤1：

Unknown column 'Password' in 'field list'

錯誤原因：mysql資料庫下已經沒有password這個欄位了，password欄位改成了authentication_string。

mysql> update mysql.user set authentication_string=PASSWORD('password') where User='root';
Query OK, 1 row affected, 1 warning (0.15 sec)
Rows matched: 1 Changed: 1 Warnings: 1

錯誤2：

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

原因：密碼太簡單，密碼由大寫、小寫、字元、數字組成

錯誤3：

ERROR 1364 (HY000): Field 'ssl_cipher' doesn't have a default value

原因：mysql5.7版本開始建立使用者需要create user

mysql> CREATE USER 'monty'@'localhost' IDENTIFIED BY 'some_pass';
mysql> GRANT ALL PRIVILEGES ON
 
 *.* TO 'monty'@'localhost'

錯誤4：

1130-host ... is not allowed to connect to this MySql server 

原因：沒有開啟遠端登入

mysql>use mysql;

mysql>update user set host = '%' where user = 'root';

mysql>select host, user from user;