1：linux登录mysql

[[email protected] 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 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> 

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