<tt><font size=2>> From: "applyhhj" <applyhhj@163.com></font></tt><br><tt><font size=2>> To: "openstack" <openstack@lists.openstack.org></font></tt><br><tt><font size=2>> Date: 09/27/2015 11:16 AM</font></tt><br><tt><font size=2>> Subject: [Openstack] Data transmission failure
between VM and outside machines</font></tt><br><tt><font size=2>> <br>> Hi, I have setup the openstack cloud and launched VMs in the cloud.
<br>> At first everything went very well. But yesterday evening, due to
<br>> some reasons our lab lost power and all servers were shutdown. This
<br>> morning I turned on all nodes and try to connect to the VM by ssh
<br>> but failed. I used netstat to check the status of port 22. It shows
<br>> that connection between VM and machine in the external network can
<br>> be established. However the ssh process just stuck at <br>> SSH2_MSG_KEXINIT sent. Also I setup a rabbitmq server in the VM and
<br>> the same situation happened. When connecting rabbitmq server through<br>> web ui, netstat shows that connections have been established however<br>> the web browser can not get any data from the server, it shows a <br>> blank page. Also I tried to ssh from one VM to another VM through
<br>> internal network, the 192.168.1.0/24 network, similar things <br>> happened. Does anyone know how to fix this problem? Thank you! By
<br>> the way the br-ex bridge can only be brought up manually, so after
<br>> boot the network node I brought up the br-ex bridge and restart all
<br>> relevant network services in network node. Please help me with this
<br>> problem. Thank you very much!!</font></tt><br><br><tt><font size=2>When faced with networking mysteries like that my
next step is usually to start taking packet traces at various points.</font></tt><br><br><tt><font size=2>Regards,</font></tt><br><tt><font size=2>Mike</font></tt><BR>