GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
允许局域网内192.168.访问
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.%.%' IDENTIFIED BY 'root' WITH GRANT OPTION;
FLUSH PRIVILEGES;
修改/etc/mysql/my.cnf,注释bind-address
#bind-address = 127.0.0.1