使用Navicat远程连接docker容器中的mysql 报2003错误
解决办法：
一、在docker中启动mysql,定义端口号3306
[root@localhost ~]# docker run -p 3306:3306 --name mysql01 -e MYSQL_ROOT_PASSWORD=123456 -d mysql
二、执行命令，输入密码
[root@localhost ~]# docker exec -it mysql01 bash
root@863b69d78d4f:/# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.12 MySQL Community Server - GPL
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
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>
三、授权
mysql> GRANT ALL ON *.* TO 'root'@'%';
四、刷新权限
mysql> flush privileges;
五、更改加密规则
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;
六、更新root用户密码（123456是我的密码，要替换成自己的）
mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
七、刷新权限
mysql> flush privileges;
连接成功.png
