Hosts With pf9-glance Role Failing To Converge With Error "inconsistent use of tabs and spaces in indentation

Problem

Hosts with pf9-glance role fail to converge. The following error is observed in the glance-api.log:

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ERROR stevedore.extension [-] Could not load 'cinder': inconsistent use of tabs and spaces in indentation (rbd.py, line 704): File "/opt/pf9/glance/lib/python3.6/site-packages/rbd.py", line 704

Environment

• Platform9 Managed OpenStack - v5.0 and below

• Ceph

• Glance

Cause

Use of tabs and spaces for indentation in the rbd.py file.

Resolution

1. Add the following environment variables on the Glance host.

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LD_LIBRARY_PATH="/opt/pf9/python/pf9-lib:$LD_LIBRARY_PATH"LD_LIBRARY_PATH="/opt/pf9/glance/lib:${LD_LIBRARY_PATH}"export LD_LIBRARY_PATHPYTHONPATH="/opt/pf9/python/lib/python3.6:${PYTHONPATH}"PYTHONPATH="/opt/pf9/glance/lib/python3.6/site-packages:${PYTHONPATH}"export PYTHONPATH

2. Install autopep8 using pip.

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~$ /opt/pf9/glance/bin/python /opt/pf9/glance/bin/pip install autopep8==1.5.1

3. Correct the formatting issues by running the following command.

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~$ /opt/pf9/python/bin/python /opt/pf9/python/lib/python3.6/site-packages/autopep8.py -i /opt/pf9/glance/lib/python3.6/site-packages/rbd.py

4. Restart the pf9-glance-api service.

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~$ sudo service pf9-glance-api restart~$ service pf9-glance-api status