mysql 8.0的
1，检查服务器mysql 服务是否启动 10061
2，mysql必须设置密码，不然报错10061
use mysql;
update user set authentication_string="" where user=“root”;
flush privileges;
ALTER USER ‘root’@’%’ IDENTIFIED WITH mysql_native_password BY ‘密码’;
3，select Host,User from user; 查看 root 把root的host 设置成%，
刷新一下 flush privileges;
重启一下mysql服务
systemctl stop mysqld
systemctl start mysqld
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