mysql 8.0.13开启远程连接 配置方式
1：linux登录mysql

[root@localhost mysql]# mysql -u root -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 19
Server version: 8.0.13 MySQL Community Server - GPL

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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> 

2：查看user表,修改连接级别

	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> select host,user from user;
±----------±-----------------+
| host | user |
±----------±-----------------+
| localhost | root |
| localhost | mysql.infoschema |
| localhost | mysql.session |
| localhost | mysql.sys |
±----------±-----------------+
4 rows in set (0.00 sec)
可以看到,root用户的host值为localhost,这代表只能本地连接,将localhost修改为%

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

3：可能你觉得到这一步就完事了,但是使用navicat连接测试时,会提示无法解析主机名相关的错误,这是mysql8的一些安全策略的问题,具体请左转google,解决办法如下

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'yourpassword';
FLUSH PRIVILEGES;

4：完毕