Open Stack

Hi Eyle

On Mon, Feb 15, 2021 at 9:59 AM Eyle Brinkhuis <eyle.brinkhuis at surf.nl>
wrote:

> Hi,
>
> Deploying a new testbed, we experience an issue with nova-compute (using
> canonical charmed openstack Train). We use networking-vpp, that uses
> python-etcd. After installation of openstack, and configuration of the
> networking-vpp setup, we cannot start nova-compute anymore:
>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]: Traceback (most recent call
> last):
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/bin/nova-compute", line 6, in <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     from nova.cmd.compute
> import main
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/nova/cmd/__init__.py", line 16, in <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     import
> nova.monkey_patch  # noqa
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/nova/monkey_patch.py", line 98, in <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     _monkey_patch()
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/nova/monkey_patch.py", line 67, in
> _monkey_patch
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     import oslo_service  #
> noqa
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/oslo_service/__init__.py", line 16, in
> <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     from oslo_log import log
> as logging
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/oslo_log/log.py", line 41, in <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     from oslo_config import
> cfg
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/oslo_config/cfg.py", line 53, in <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     from oslo_config import
> types
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/oslo_config/types.py", line 28, in <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     from debtcollector
> import removals
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/debtcollector/__init__.py", line 20, in
> <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:
>  'debtcollector').version_string()
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pbr/version.py", line 467, in version_string
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     return
> self.semantic_version().brief_string()
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pbr/version.py", line 462, in
> semantic_version
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     self._semantic =
> self._get_version_from_pkg_resources()
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pbr/version.py", line 439, in
> _get_version_from_pkg_resources
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     import pkg_resources
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3250, in
> <module>
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     @_call_aside
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3234, in
> _call_aside
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     f(*args, **kwargs)
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 3263, in
> _initialize_master_working_set
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     working_set =
> WorkingSet._build_master()
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 574, in
> _build_master
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     ws = cls()
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 567, in
> __init__
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     self.add_entry(entry)
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 623, in
> add_entry
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     for dist in
> find_distributions(entry, True):
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2065, in
> find_on_path
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     for dist in
> factory(fullpath):
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:   File
> "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2127, in
> distributions_from_metadata
> Feb 15 09:35:19 sr635-1 nova-compute[131674]:     if len(os.listdir(path))
> == 0:
> Feb 15 09:35:19 sr635-1 nova-compute[131674]: PermissionError: [Errno 13]
> Permission denied:
> '/usr/local/lib/python3.6/dist-packages/python_etcd-0.4.5.dist-info'
> Feb 15 09:35:19 sr635-1 systemd[1]: nova-compute.service: Main process
> exited, code=exited, status=1/FAILURE
>
> Meanwhile, in a different deployment, which runs nova-compute
> 20.3.0-ubuntu1~cloud0, we do not experience this issue. Permissions of all
> the packages in /usr/local/lib/python3.6/dist-packages/ are all identical.
> When we remove all packages once again (python-etcd etc), nova-compute is
> able to start without any issue.
>
> Anyone experiencing the same, or has a workaround?


I've not experienced this directly - have you got the apparmor enabled on
one of the deployments but not the other? That's a charm configuration
option.  You would also see a DENIED message in the kern.log file if this
is enabled (I think).

Regards

James
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstack.org/pipermail/openstack-discuss/attachments/20210215/52bc4d4c/attachment-0001.html>