mysql数据库开放访问和mysql8的链接错误解决

开放数据库访问权限

修改root的访问权限
首先开放root任意ip地址可访问
mysql>update user set host = '%' where user = 'root';
修改后查看是否修改成功
mysql>select host, user from user; 

mysql8 ：客户端连接caching-sha2-password问题

#修改加密规则 
ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER; 

#更新一下用户的密码 
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'password'; 

#刷新权限 
FLUSH PRIVILEGES;