Cannot open Instance Console - Failed to connect to server (code: 1006)

Solution In Progress - Updated -


  • Console for the instances will fail to connect intermittently
  • When a failure is encountered, the following error message will be displayed in the VNC applet:
 Failed to connect to server (code: 1006)
  • The following error also appears in /var/log/nova/nova-novncproxy.log
2015-09-03 15:30:16.837 25082 INFO nova.console.websocketproxy [req-bd95c208-68fa-42b4-ad3b-adb2fb7be91c None] Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/websockify/", line 711, in top_new_client
  File "/usr/lib/python2.7/site-packages/nova/console/", line 177, in new_client
  File "/usr/lib/python2.7/site-packages/nova/console/", line 117, in new_websocket_client
    tsock = self.socket(host, port, connect=True)
  File "/usr/lib/python2.7/site-packages/websockify/", line 180, in socket
    socket.IPPROTO_TCP, flags)
gaierror: [Errno -2] Name or service not known


  • Red Hat OpenStack 5.0 (RHOS)
  • Red Hat Enterprise Linux 7.0 (RHEL)

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