我在本机上撞了一个centos7虚拟机，然后安装了社区版的mysql，开始老远程连接不到此mysql服务器
解决办法:/etc/my.cnf文件
修改my.cnf使mysql监听在任意ip地址
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address = 0.0.0.0
原文：http://www.cnblogs.com/working/p/5825070.html