谷歌了一下之後，原來是在mysql的my.cnf中有下面一段代碼：

# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address           = 127.0.0.1  #這裏默認監聽本地localhost

如果要讓mysql監聽到其他的地址，可以將bind-address = 127.0.0.1註釋掉。 

或者將bind-address = 0.0.0.0監聽所有的地址

如果想讓192.168.10.83

GRANT ALL PRIVILEGES ON *.* TO ‘username‘@‘192.168.10.83‘ IDENTIFIED BY ‘password‘ WITH GRANT OPTION;

如果要想所有的外部ip地址都能夠訪問使用mysql，可以執行下面：

GRANT ALL PRIVILEGES ON *.* TO ‘username‘@‘%‘ IDENTIFIED BY ‘password‘ WITH GRANT OPTION
 
;

之後執行刷新數據庫：

flush privileges;

ERROR 2003 (HY000): Can't connect to MySQL server on '192.168.33.10' (111) 解決方法