一、查看3306端口是否开放
netstat -an|grep 3306
二、修改访问权限
cd etc/mysql/mysql.conf.d/
sudo vim mysqld.cnf
# bind-address = 127.0.0.1
然后--注释address
然后-- 修改端口号
port = 3306
三、开放root账户的访问权限
service mysql stop
service mysql start
sudo mysql -uroot -p
show databases;
use mysql;
show tables;
desc user;
select host,user from user;
update user set host='%' where user='root';
grant all privileges on *.* to 'root'@'%' identified by '你的root账户密码';
flush privileges;