<div dir="ltr">Hi  Stacker<div><br></div><div>I got a problem in my Openstack ESSEX, using ubuntu12.04.</div><div>I have  downloaded nova from github, and installed virtualenv yesterday.</div><div>Now, I can see as follows:</div>
<div><div>root@ozg-PowerEdge-2950:~/nova# nova-manage service list</div><div>2013-09-06 11:15:19 DEBUG nova.utils [req-165ab3a3-6660-4a32-9d6a-8eeeb8bd8716 None None] backend <module 'nova.db.sqlalchemy.api' from '/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.pyc'> from (pid=9531) __get_backend /usr/lib/python2.7/dist-packages/nova/utils.py:662</div>
<div>Binary           Host                                 Zone             Status     State Updated_At</div><div>nova-consoleauth ozg-PowerEdge-2950                   nova             enabled    XXX   2013-09-05 06:39:29</div>
<div>nova-scheduler   ozg-PowerEdge-2950                   nova             enabled    XXX   2013-09-05 06:39:30</div><div>nova-compute     ozg-PowerEdge-2950                   nova             enabled    XXX   2013-09-05 06:39:26</div>
<div>nova-network     ozg-PowerEdge-2950                   nova             enabled    XXX   2013-09-05 06:39:30</div><div>nova-cert        ozg-PowerEdge-2950                   nova             enabled    XXX   2013-09-05 06:39:30</div>
<div>2013-09-06 11:15:19 DEBUG nova.utils [-] Inner Exception: 'module' object has no attribute 'impl_kombu' from (pid=9531) import_class /usr/lib/python2.7/dist-packages/nova/utils.py:82</div><div>Command failed, please check log for more info</div>
<div>2013-09-06 11:15:19 CRITICAL nova [-] Class impl_kombu could not be found: 'module' object has no attribute 'impl_kombu'</div><div>2013-09-06 11:15:19 TRACE nova Traceback (most recent call last):</div>
<div>2013-09-06 11:15:19 TRACE nova   File "/usr/bin/nova-manage", line 1746, in <module></div><div>2013-09-06 11:15:19 TRACE nova     main()</div><div>2013-09-06 11:15:19 TRACE nova   File "/usr/bin/nova-manage", line 1734, in main</div>
<div>2013-09-06 11:15:19 TRACE nova     rpc.cleanup()</div><div>2013-09-06 11:15:19 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/rpc/__init__.py", line 160, in cleanup</div><div>2013-09-06 11:15:19 TRACE nova     return _get_impl().cleanup()</div>
<div>2013-09-06 11:15:19 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/rpc/__init__.py", line 201, in _get_impl</div><div>2013-09-06 11:15:19 TRACE nova     _RPCIMPL = utils.import_object(FLAGS.rpc_backend)</div>
<div>2013-09-06 11:15:19 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 92, in import_object</div><div>2013-09-06 11:15:19 TRACE nova     cls = import_class(import_str)</div><div>2013-09-06 11:15:19 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 83, in import_class</div>
<div>2013-09-06 11:15:19 TRACE nova     raise exception.ClassNotFound(class_name=class_str, exception=exc)</div><div>2013-09-06 11:15:19 TRACE nova ClassNotFound: Class impl_kombu could not be found: 'module' object has no attribute 'impl_kombu'</div>
<div>2013-09-06 11:15:19 TRACE nova</div></div><div><br></div><div>Using pip freeze to see kombu's version in my current python environment, as follows, kombu's versio is 2.5.14 rather than 1.4.3 which is correct in Essex.</div>
<div><div>root@ozg-PowerEdge-2950:~# pip freeze | grep kombu</div><div>kombu==2.5.14</div></div><div><br></div><div>Moreover, I can find two kombus in my system, kombu-1.4.3  and kombu-2.5.14 as follows:</div><div><br></div>
<div>root@ozg-PowerEdge-2950:~#locate kombu | grep grep 1.4<br></div><div><div>/usr/share/pyshared/kombu/utils/log.py</div><div>/usr/share/pyshared/kombu-1.4.3.egg-info/PKG-INFO</div><div>/usr/share/pyshared/kombu-1.4.3.egg-info/SOURCES.txt</div>
<div>/usr/share/pyshared/kombu-1.4.3.egg-info/dependency_links.txt</div><div>/usr/share/pyshared/kombu-1.4.3.egg-info/not-zip-safe</div><div>/usr/share/pyshared/kombu-1.4.3.egg-info/requires.txt</div><div>/usr/share/pyshared/kombu-1.4.3.egg-info/top_level.txt</div>
<div><br></div><div>root@ozg-PowerEdge-2950:/usr/lib/python2.7/dist-packages# locate kombu | grep 2.5</div><div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info</div><div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/PKG-INFO</div>
<div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/SOURCES.txt</div><div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/dependency_links.txt</div><div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/installed-files.txt</div>
<div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/not-zip-safe</div><div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/requires.txt</div><div>/root/cinder/.venv/lib/python2.7/site-packages/kombu-2.5.13-py2.7.egg-info/top_level.txt</div>
<div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info</div><div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/PKG-INFO</div><div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/SOURCES.txt</div>
<div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/dependency_links.txt</div><div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/installed-files.txt</div><div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/not-zip-safe</div>
<div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/requires.txt</div><div>/root/neutron/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/top_level.txt</div><div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info</div>
<div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/PKG-INFO</div><div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/SOURCES.txt</div><div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/dependency_links.txt</div>
<div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/installed-files.txt</div><div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/not-zip-safe</div><div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/requires.txt</div>
<div>/root/nova/.venv/lib/python2.7/site-packages/kombu-2.5.14-py2.7.egg-info/top_level.txt</div><div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info</div><div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/PKG-INFO</div>
<div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/SOURCES.txt</div><div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/dependency_links.txt</div><div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/installed-files.txt</div>
<div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/not-zip-safe</div><div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/requires.txt</div><div>/usr/local/lib/python2.7/dist-packages/kombu-2.5.14-py2.7.egg-info/top_level.txt</div>
</div><div><br></div><div>I thank it is will resolve my problem that switch kombu-2.5.14 to kombu-1.4.3, but I have no idea how to switch it.</div><div><br></div><div><div style="font-family:arial,sans-serif;font-size:13.63636302947998px">
Looking for any help.</div><div style="font-family:arial,sans-serif;font-size:13.63636302947998px">Regards.</div></div><div style="font-family:arial,sans-serif;font-size:13.63636302947998px">zhengguang</div></div>