nova-objectstore start errors after install

[Mark Gallop]

I received the following error when installing nova on a fresh Ubuntu 10.10 server:

Setting up nova-objectstore (0.9.1~bzr331-0ubuntu2) ...
 * Starting nova objectstore nova-objectstore
Traceback (most recent call last):
  File "/usr/bin/nova-objectstore", line 38, in <module>
    from nova.objectstore import handler
  File "/usr/lib/pymodules/python2.6/nova/objectstore/handler.py", line 58, in <module>
    from nova.api.ec2 import context
  File "/usr/lib/pymodules/python2.6/nova/api/__init__.py", line 30, in <module>
    from nova.api import rackspace
  File "/usr/lib/pymodules/python2.6/nova/api/rackspace/__init__.py", line 35, in <module>
    from nova.api.rackspace import backup_schedules
  File "/usr/lib/pymodules/python2.6/nova/api/rackspace/backup_schedules.py", line 24, in <module>
    import nova.image.service
ImportError: No module named image.service
   ...fail!
invoke-rc.d: initscript nova-objectstore, action "start" failed.

I ran the following command to get the packages:

sudo apt-get install nova-api nova-objectstore nova-compute \
                nova-scheduler nova-network euca2ools unzip

[Soren Hansen (soren)]

Oh, dear. I see what's going on here. nova-objectstore is missing a dependency on python-nova. :(

[Soren Hansen (soren)]

Ah, sorry, no it's not.

[Soren Hansen (soren)]

On 14-10-2010 13:20, Launchpad Bug Tracker wrote:
> Setting up nova-objectstore (0.9.1~bzr331-0ubuntu2) ...
> * Starting nova objectstore nova-objectstore
> Traceback (most recent call last):
> File "/usr/bin/nova-objectstore", line 38, in <module>
> from nova.objectstore import handler
> File "/usr/lib/pymodules/python2.6/nova/objectstore/handler.py", line 58, in <module>
> from nova.api.ec2 import context
> File "/usr/lib/pymodules/python2.6/nova/api/__init__.py", line 30, in <module>
> from nova.api import rackspace
> File "/usr/lib/pymodules/python2.6/nova/api/rackspace/__init__.py", line 35, in <module>
> from nova.api.rackspace import backup_schedules
> File "/usr/lib/pymodules/python2.6/nova/api/rackspace/backup_schedules.py", line 24, in <module>
> import nova.image.service
> ImportError: No module named image.service
> ...fail!
> invoke-rc.d: initscript nova-objectstore, action "start" failed.
>
> I ran the following command to get the packages:
>
> sudo apt-get install nova-api nova-objectstore nova-compute \
> nova-scheduler nova-network euca2ools unzip
>

This happens because python-support hasn't run yet when we attempt to start the daemon.

--
Soren Hansen
Ubuntu Developer http://www.ubuntu.com/
OpenStack Developer http://www.openstack.org/

[Soren Hansen (soren)]

Fix committed:

    http://bazaar.launchpad.net/~nova-core/nova/ubuntu-packaging/revision/280

It'll be included in an SRU soon, hopefully.

Test case:
On a system without python-nova, run "apt-get install nova-objectstore". It will fail to start the daemon, citing missing modules. With this fix applied, it will start the daemon succesfully.

[Stephen Milton (milton-isomedia)]

I think this dependency problem also causes the openssl config in /var/lib/nova/CA to fail. It can be avoided on a new install by running two install commands instead of one:

sudo apt-get install python-nova
sudo apt-get install nova-api nova-objectstore nova-compute nova-scheduler nova-network euca2ools unzip

[Launchpad Janitor (janitor)]

This bug was fixed in the package nova - 2011.1~bzr412-0ubuntu1

---------------
nova (2011.1~bzr412-0ubuntu1) natty; urgency=low

  [ Soren Hansen ]
  * New upstream snapshot.
  * Added the new tarballs page to debian/watch.
  * Clean out patch-branches (everything is upstream now).
  * Remove redis-server as a build-depends and don't start it for tests
    anymore.
  * Add missing dependency on python-webob.
  * Force a python-support run (so avoid deferring it until dpkg
    triggers run). (LP: #660428)
  * Remove build and runtime dependencies on python-tornado. It's not
    needed anymore.
  * logdir.patch: Add a --logdir option to workers so that they can all
    use the same flagfile. (lp:~soren/nova/logdir-flag)
  * Consolidate all the flagfiles into one.
  * flagfile_location.patch: Patch from upstream to ensure all workers
    have a consistent way of finding their flagfile.
    (lp:~soren/nova/unify-default-flagfile-location)
  * nova-manage_flagfile_location.patch: Make sure nova-manage uses
    /etc/nova/nova.conf by default.
  * Add build and runtime dependency on openssl. It used to be pulled in
    by python-tornado, but is actually used directly by nova.

  [ Chuck Short ]
  * debian/control:
   - Add dependency to python-rrdtool so that nova-instancemonitor
     doesnt complain about missing python modules when starting.
  * debian/nova-common.install: Add missing templates.
  * debian/nova-*.conf: Update flagfiles to handle upstream changes.
  * Dropped start-redis since we dont do redis anymore.
 -- Soren Hansen <email address hidden> Tue, 23 Nov 2010 11:17:09 +0100

[Joseph Heck (heckj)]

This bug surfaced again while testing the diablo-1 milestone against Ubuntu maverick.

running /etc/init.d/nova-objectstore start right after the install started the service without issue.

[Soren Hansen (soren)]

Can you post the exact error message, please? Thanks!

[Thierry Carrez (ttx)]

@Joseph Heck: please open a separate bug and post the error message there. The fix for this bug is still in current nova, so it's probably the same symptoms but a different bug.