1、创建一个用户并授权 grant select,insert,update,delete on db.* to username@'10.%' identified by 'passwd'; 2、防火墙开放3306端口
db.*
username
'passwd'
看mysql.users表的root账号是否有密码为空的select *from mysql.user where user='root'; `
select *from mysql.user where user='root';