[root@openstack keystone]# openstack project list
Failed to discover available identity versions when contacting http://192.168.100.100:5000/v3. Attempting to parse version from URL.
Unable to establish connection to http://192.168.100.100:5000/v3/auth/tokens: HTTPConnectionPool(host='192.168.100.100', port=5000): Max retries exceeded with url: /v3/auth/tokens (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f12999ffe90>: Failed to establish a new connection: [Errno 113] No route to host',))
哥哥们这是为什么啊，该是怎么解决
