无法访问虚拟机no route to host 解决 .

在virtualbox vm里面安装openstack，发现安装后无法访问80端口，用telnet访问80端口，发现居然是no route to host;

[deng@localhost ~]$ telnet 192.168.56.101 80
Trying 192.168.56.101...
telnet: connect to address 192.168.56.101: No route to host
telnet: Unable to connect to remote host: No route to host

虚拟机中ssh服务却可以使用，怀疑是防火墙问题，就把虚拟机中的防火墙给清了一下。

[deng@localhost ~]$ sudo iptables -F

搞定