Description of problem:

When ugprading from OSP6 to OSP7, nova-novncproxy will fail with:

Traceback (most recent call last):
  File "/usr/bin/nova-novncproxy", line 6, in <module>
    from nova.cmd.novncproxy import main
  File "/usr/lib/python2.7/site-packages/nova/cmd/novncproxy.py", line 25, in <module>
    from nova.cmd import baseproxy
  File "/usr/lib/python2.7/site-packages/nova/cmd/baseproxy.py", line 26, in <module>
    from nova.console import websocketproxy
  File "/usr/lib/python2.7/site-packages/nova/console/websocketproxy.py", line 154, in <module>
    websockify.ProxyRequestHandler):
AttributeError: 'module' object has no attribute 'ProxyRequestHandler'


This is because the OSP7 version of novncproxy requires python-websockify >= 0.6.0-2.

Version-Release number of selected component (if applicable):

  openstack-nova-novncproxy-2015.1.0-16.el7ost.noarch

Resolution:

  The openstack-nova-novncproxy package needs a versioned Requires: on python-websockify.