Public bug reported:

1. Install nova-compute-flex
2. Try to start nova-compute

Expected result: it works

Actual result: nova-compute service cannot start due to this error:

2015-05-05 12:16:49.262 19742 INFO nova.openstack.common.periodic_task [-] 
Skipping periodic task _periodic_update_dns because its interval is negative
2015-05-05 12:16:49.283 19742 INFO nova.virt.driver [-] Loading compute driver 
'ncflex.nova.virt.flex.LXCDriver'
2015-05-05 12:16:49.286 19742 ERROR nova.virt.driver [-] Unable to load the 
virtualization driver
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver Traceback (most recent 
call last):
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/nova/virt/driver.py", line 1389, in 
load_compute_driver
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     virtapi)
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/importutils.py", line 52, in 
import_object_ns
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     return 
import_class(import_str)(*args, **kwargs)
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/importutils.py", line 27, in 
import_class
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     __import__(mod_str)
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/ncflex/nova/virt/flex/__init__.py", line 1, 
in <module>
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     from . import driver
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/ncflex/nova/virt/flex/driver.py", line 28, in 
<module>
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     from . import 
containers
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/ncflex/nova/virt/flex/containers.py", line 
24, in <module>
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     from . import config
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/ncflex/nova/virt/flex/config.py", line 19, in 
<module>
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     from . import utils as 
container_utils
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver   File 
"/usr/lib/python2.7/dist-packages/ncflex/nova/virt/flex/utils.py", line 24, in 
<module>
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver     from 
nova.openstack.common.gettextutils import _  # noqa
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver ImportError: No module 
named gettextutils
2015-05-05 12:16:49.286 19742 TRACE nova.virt.driver 

In Juno /usr/lib/python2.7/dist-
packages/nova/openstack/common/gettextutils.py was present and provided
by nova-common package. In Kilo nova-compute-flex is unusable due to
this missing python dependency.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nova-common 1:2015.1~rc1-0ubuntu1~cloud0 [origin: Canonical]
ProcVersionSignature: Ubuntu 3.16.0-37.49~14.04.1-generic 3.16.7-ckt9
Uname: Linux 3.16.0-37-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
CrashDB:
 {
                "impl": "launchpad",
                "project": "cloud-archive",
                "bug_pattern_url": 
"http://people.canonical.com/~ubuntu-archive/bugpatterns/bugpatterns.xml";,
             }
Date: Tue May  5 12:54:10 2015
InstallationDate: Installed on 2015-03-27 (38 days ago)
InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 
(20150218.1)
PackageArchitecture: all
ProcEnviron:
 TERM=screen
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 XDG_RUNTIME_DIR=<set>
SourcePackage: nova
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.nova.nova.conf: 2015-05-04T15:19:40.914636

** Affects: nova (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug third-party-packages trusty

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https://bugs.launchpad.net/bugs/1451941

Title:
  nova-compute-flex is broken due to missing python dependencies

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