On Ubuntu 10.10, upgrading a nova install stalls

Additional info:

In fact it didn't quite stall out all the way on the second test box I ran it on. Here's the remaining errors. I also see these errors when I try to run the VM at http://wiki.openstack.org/NovaVirtually

Installing new version of config file /etc/init.d/nova-scheduler ...
 * Starting nova scheduler nova-scheduler
WARNING:root:Starting scheduler node
Traceback (most recent call last):
  File "/usr/local/lib/python2.6/dist-packages/nova-2010.1-py2.6.egg/nova/twistd.py", line 279, in serve
    twistd.runApp(options)
  File "/usr/lib/python2.6/dist-packages/twisted/scripts/twistd.py", line 23, in runApp
    _SomeApplicationRunner(config).run()
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 374, in run
    self.application = self.createOrGetApplication()
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 439, in createOrGetApplication
    application = getApplication(self.config, passphrase)
--- <exception caught here> ---
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 450, in getApplication
    application = service.loadApplication(filename, style, passphrase)
  File "/usr/lib/python2.6/dist-packages/twisted/application/service.py", line 390, in loadApplication
    application = sob.loadValueFromFile(filename, 'application', passphrase)
  File "/usr/lib/python2.6/dist-packages/twisted/persisted/sob.py", line 210, in loadValueFromFile
    exec fileObj in d, d
  File "/usr/bin/nova-scheduler", line 48, in <module>
    application = service.Service.create()
  File "/usr/local/lib/python2.6/dist-packages/nova-2010.1-py2.6.egg/nova/service.py", line 127, in create
    proxy=service_obj)
  File "/usr/local/lib/python2.6/dist-packages/nova-2010.1-py2.6.egg/nova/rpc.py", line 149, in __init__
    topic=topic)
  File "/usr/local/lib/python2.6/dist-packages/nova-2010.1-py2.6.egg/nova/rpc.py", line 140, in __init__
    super(TopicConsumer, self).__init__(connection=connection)
  File "/usr/local/lib/python2.6/dist-packages/nova-2010.1-py2.6.egg/nova/rpc.py", line 86, in __init__
    super(Consumer, self).__init__(*args, **kwargs)
  File "/usr/lib/pymodules/python2.6/carrot/messaging.py", line 230, in __init__
    self.declare()
  File "/usr/lib/pymodules/python2.6/carrot/messaging.py", line 267, in declare
    warn_if_exists=self.warn_if_exists)
  File "/usr/lib/pymodules/python2.6/carrot/backends/pyamqplib.py", line 221, in queue_declare
    return self.channel.queue_declare(queue=queue,
  File "/usr/lib/pymodules/python2.6/carrot/backends/pyamqplib.py", line 169, in channel
    self._channel_ref = weakref.ref(self.connection.get_channel())
  File "/usr/lib/pymodules/python2.6/carrot/connection.py", line 150, in get_channel
    return self.connection.channel()
  File "/usr/lib/pymodules/python2.6/carrot/connection.py", line 120, in connection
    self._connection = self._establish_connection()
  File "/usr/lib/pymodules/python2.6/carrot/connection.py", line 133, in _establish_connection
    return self.create_backend().establish_connection()
  File "/usr/lib/pymodules/python2.6/carrot/backends/pyamqplib.py", line 183, in establish_connection
    connect_timeo...

Couldn't really reproduce that error...

Looking at your logs, it appears you don't have rabbitmq-server installed (or running). If you just upgraded a redis-dependent Nova into a Rabbit-using one, you might have missed that prerequisite step ? If not, could you give me more details on what you started from and what you tried to go to ?

I'm reasonably sure I fixed this yesterday. Can you check if it's still a
problem?

Sent from my phone. Please pardon my brevity.

@Anne, any chance you could retest that, like Soren asked ?

Closing as supposed fixed, without answer from OP. Please reopen if you can reproduce it.