package nova-common 2012.1+stable~20120612-3ee026e-0ubuntu1.2 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück

[Kurt Huwig]

automatic update of package

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: nova-common 2012.1+stable~20120612-3ee026e-0ubuntu1.2
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
Date: Fri Jul 27 13:00:37 2012
ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
SourcePackage: nova
Title: package nova-common 2012.1+stable~20120612-3ee026e-0ubuntu1.2 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 1 zurück
UpgradeStatus: No upgrade log present (probably fresh install)

[Adam Gandelman (gandelman-a)]

Kurt-

Thanks for the report. From the looks of it, nova is having problems import the webob.exc module in the postinst. This is strange, as python-webob is a dependency of python-nova, both of which are installed according the logs. I'm curious--apport is reporting this is a fresh installation and not an upgrade, but dpkg is finding existing nova configuration where its expecting to install new stuff. Is there a chance you've already installed nova via some other means (devstack?) and the systems python environment is a bit out of skew? If the system is still stuck on this installation, can you try to manually import the webob.exc module and test if there is an import error?
You can run:

$ python -c 'import webob.exc'

Thanks

[Kurt Huwig (k-huwig)]

Hi Adam,

yes, I had devstack installed. This is the output from your command:

$ python -c 'import webob.exc'
Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: No module named webob.exc

I purged python-webob (and everything else from nova), removed /etc/nova/ and then reinstalled nova-common. Now it works fine. Thanks for your help!

[Chuck Short (zulcss)]

Closing based on comments.