Open Stack

Hi All,

I am attepting deployment of Neutron with various tunnel provider
networks with the DevStack scripts. Although in the development
environment this is a usage problem.

For both the Open vSwitch and ML2 plugins and for either GRE or VXLAN
tunnelling I receive this stack trace after some time:

2013-10-30 11:46:11.977 INFO neutron.common.config [-] Config paste
file: /etc/neutron/api-paste.ini
2013-10-30 11:46:11.978 ERROR neutron.common.config [-] Unable to load
quantum from configuration file /etc/neutron/api-paste.ini.
2013-10-30 11:46:11.978 TRACE neutron.common.config Traceback (most
recent call last):
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/opt/stack/neutron/neutron/common/config.py", line 147, in
load_paste_app
2013-10-30 11:46:11.978 TRACE neutron.common.config     app =
deploy.loadapp("config:%s" % config_path, name=app_name)
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247,
in loadapp
2013-10-30 11:46:11.978 TRACE neutron.common.config     return
loadobj(APP, uri, name=name, **kw)
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 271,
in loadobj
2013-10-30 11:46:11.978 TRACE neutron.common.config
global_conf=global_conf)
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 296,
in loadcontext
2013-10-30 11:46:11.978 TRACE neutron.common.config
global_conf=global_conf)
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py",
line 320, in _loadconfig
2013-10-30 11:46:11.978 TRACE neutron.common.config
return loader.get_context(object_type, name, global_conf)
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 408,
in get_context
2013-10-30 11:46:11.978 TRACE neutron.common.config     object_type,
name=name)
2013-10-30 11:46:11.978 TRACE neutron.common.config   File
"/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 587,
in find_config_section
2013-10-30 11:46:11.978 TRACE neutron.common.config     self.filename))
2013-10-30 11:46:11.978 TRACE neutron.common.config LookupError:
No section 'quantum' (prefixed by 'app' or 'application' or 'composite'
or 'composit' or 'pipeline' or 'filter-app') found in config
/etc/neutron/api-paste.ini
2013-10-30 11:46:11.978 TRACE neutron.common.config
2013-10-30 11:46:11.979 ERROR neutron.service [-] Unrecoverable error:
please check log for details.
2013-10-30 11:46:11.979 TRACE neutron.service Traceback (most recent
call last):
2013-10-30 11:46:11.979 TRACE neutron.service   File
"/opt/stack/neutron/neutron/service.py", line 100, in serve_wsgi
2013-10-30 11:46:11.979 TRACE neutron.service     service.start()
2013-10-30 11:46:11.979 TRACE neutron.service   File
"/opt/stack/neutron/neutron/service.py", line 65, in start
2013-10-30 11:46:11.979 TRACE neutron.service     self.wsgi_app =
_run_wsgi(self.app_name)
2013-10-30 11:46:11.979 TRACE neutron.service   File
"/opt/stack/neutron/neutron/service.py", line 109, in _run_wsgi
2013-10-30 11:46:11.979 TRACE neutron.service     app =
config.load_paste_app(app_name)
2013-10-30 11:46:11.979 TRACE neutron.service   File
"/opt/stack/neutron/neutron/common/config.py", line 154, in
load_paste_app
2013-10-30 11:46:11.979 TRACE neutron.service     raise
RuntimeError(msg)
2013-10-30 11:46:11.979 TRACE neutron.service RuntimeError: Unable to
load quantum from configuration file /etc/neutron/api-paste.ini.
2013-10-30 11:46:11.979 TRACE neutron.service
ERROR: Unable to load quantum from configuration file
/etc/neutron/api-paste.ini.

As I understand it there was a bug,

https://bugs.launchpad.net/neutron/+bug/1218090
https://bugs.launchpad.net/neutron/+bug/1210236

that caused this output but the problem has since been resolved,

https://review.openstack.org/#/c/51696/

Can anyone shed some light on why this might be happening?

Thank you.

Regards
Nikolai