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DB update failed during magnum install

asked 2016-10-12 09:07:22 -0600

pcastets gravatar image

I am following this guide: ( to install Magnum (Newton) in Ubuntu 16.04.

I have the following error when populating the magnum database:

# su -s /bin/sh -c "magnum-db-manage upgrade" magnum
      File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/migration_cli/", line 47, in __init__
        raise ValueError('There must be at least one plugin active.')
    ValueError: There must be at least one plugin active.

Note: I had previously installed and removed the magnum packages. I had also manually removed the "magnum" database before re-installing the packages.

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Hi~ I've got into the same problem. Have you sloved it?

rogeryu gravatar imagerogeryu ( 2016-10-26 06:06:23 -0600 )edit

1 answer

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answered 2016-11-10 04:36:43 -0600

updated 2016-11-11 10:53:52 -0600

This is the same issue as in

The fix for this was proposed in and the fixed python-magnum package has been uploaded as version 3.1.1-1 in the Debian Unstable repository (see ).

I cannot see that Ubuntu has updated this package in their repos yet, however a temporary fix would be to download and install the Debian package from

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Asked: 2016-10-12 05:43:36 -0600

Seen: 423 times

Last updated: Nov 11 '16