現在mysql交互模式下輸入：

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '12345' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

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/etc/mysql/mysql.conf.d下修改文件gedit mysqld.cnf

注釋掉這句話：

#bind-address??????=?127.0.0.1

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/etc/init.d/mysql restart

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終端測試：

mysql -h localhost -u root -p12345

mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. ?Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.7.21-0ubuntu0.16.04.1 (Ubuntu)


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Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.


Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>?

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最終navicat配置如下，注意端口不要寫錯，我一開始查了很久最后發現把端口3306誤寫成3006了。

總結

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