No module named oslo_config

[Nick Dusek]

OS: CentOS Linux 7.4.1708
OpenStack release: Pike
Ansible version: 2.4.3.0
Python version: 2.7.5

When running `kolla-ansible -i ./multinode deploy` I receive the following error during execution of the `/usr/share/kolla-ansible/ansible/roles/mariadb/tasks/config.yml` playbook:

    ERROR! Unexpected Exception, this is probably a bug: No module named oslo_config

I will provide the verbose output using -vvv in an attachment. I don't really understand the purpose/role of oslo_config, just that it is provided by pip. I have tried running the following to upgrade the package but nothing has resolved the error.

    sudo pip install [oslo_config/oslo.config]
    sudo pip install --ignore-installed [oslo.config/oslo_config]
    sudo yum install python2-oslo-config

Furthermore, after each of these operations, I have launched a Python shell and tested `import oslo_config` and no errors are thrown. `kolla-ansible -i ./multinode [boostrap-servers/prechecks]` are both passing as well.

The way the error message is worded seems to suggest that it is a known bug, so any help that could be provided would be much appreciated.

Thank you

[Nick Dusek (ndusek)]

Found a fix for this that got me through the deployment successfully, but I'm not sure why pip doesn't take care of this as part of the dependency resolution for kolla-ansible.

I ended up installing ansible and kolla-ansible in a virtualenv as recommended by the documentation, but that in itself doesn't take care of the oslo.config issue. I had to dig up the oslo.config release notes (https://docs.openstack.org/releasenotes/oslo.config/index.html) and find the version corresponding to the correct OpenStack release. So for Queens, this would be 5.2.0. Then in virtualenv, install this specific version:

`pip install -U 'oslo.config==5.2.0'`

[Sebastian (cpdev)]

same Problem:
OS: Ubuntu 16.04
OpenStack release: queens
Ansible version: 2.5.4.0
Python version: 2.7.13

Workaround does not work

[Sebastian (cpdev)]

Does anyone have a working config?
OS: ??
OpenStack release: ??
Ansible version: ??
Python version: ??

[JD Lester (jdlester8)]

I got mine to work by removing system packages:
$ cd kolla-ansible
# pip uninstall -r requirements.txt

Then creating a virtualenv
(kolla-ansible) $ pip install -r requirements.txt
(kolla-ansible) $ pip install ansible
(kolla-ansible) $ python setup.py install
(kolla-ansible) $ kolla-ansible -i multinode deploy

[Brian Walsh (bwalsh)]

I ran into this problem. It seems there are issues with running kolla-ansible within a virtualenv.

My initial setup:

$ pip install --user ansible
$ pip install --user virtualenv
$ virtualenv kolla-ansible
$ source kolla-ansible/bin/activate
(kolla-ansible) $ pip install kolla-ansible
...
(kolla-ansible) $ kolla-ansible -i multinode deploy
...
ERROR! Unexpected Exception, this is probably a bug: No module named oslo_config

This was while trying to install rocky. Had a different error while trying to install queens (could not find netaddr).

To fix both of the errors (queens/rocky) I had to install two python packages outside of the virtualenv even though they were already installed in the virtualenv.

$ pip install --user netaddr oslo_config

$ pip freeze --user
ansible==2.7.1
Babel==2.6.0
bcrypt==3.1.4
certifi==2018.10.15
cffi==1.11.5
chardet==3.0.4
debtcollector==1.20.0
funcsigs==1.0.2
Jinja2==2.10
MarkupSafe==1.1.0
netaddr==0.7.19
oslo.config==6.7.0
oslo.i18n==3.22.1
paramiko==2.4.2
pbr==5.1.1
pyasn1==0.4.4
pycparser==2.19
PyNaCl==1.3.0
pytz==2018.7
PyYAML==3.13
requests==2.20.1
rfc3986==1.1.0
stevedore==1.30.0
urllib3==1.24.1
virtualenv==16.1.0
wrapt==1.10.11

(kolla-ansible) $ pip freeze
asn1crypto==0.24.0
Babel==2.6.0
backports.ssl-match-hostname==3.5.0.1
certifi==2018.10.15
cffi==1.11.5
chardet==3.0.4
cryptography==2.3.1
debtcollector==1.20.0
docker==3.5.1
docker-pycreds==0.3.0
enum34==1.1.6
funcsigs==1.0.2
idna==2.7
ipaddress==1.0.22
iso8601==0.1.12
Jinja2==2.10
kolla-ansible==7.0.0
MarkupSafe==1.1.0
monotonic==1.5
netaddr==0.7.19
netifaces==0.10.7
oslo.config==6.7.0
oslo.i18n==3.22.1
oslo.utils==3.37.1
pbr==5.1.1
pycparser==2.19
pyparsing==2.3.0
pytz==2018.7
PyYAML==3.13
requests==2.20.0
rfc3986==1.1.0
six==1.11.0
stevedore==1.30.0
urllib3==1.24.1
websocket-client==0.54.0
wrapt==1.10.11

OS: Ubuntu 18.04 (using Ubuntu 16.04 for openstack nodes)
OpenStack release: Rocky
Ansible version: 2.7.1
Python version: 2.7.15rc1

[Yongfeng Du (dolpherdu)]

Just ran into this problem in virtualenv.
"pip install ansible"
in the virtualenv fixed this.
Previous I'm using the ansible installed by "yum install ansible" outside of venv.

[Mark Goddard (mgoddard)]

Yongfenf Du, could you provide the versions of Ansible you were using, and your OS?

[Launchpad Janitor (janitor)]

[Expired for kolla-ansible because there has been no activity for 60 days.]