Trouble with installing openstack through devstack script

Question

I am facing a problem while installing openstack through devstack script on my Ubuntu 15 lts.

It says:

sorry, but this version only supports 100 named groups" AssertionError: sorry, but this version only supports 100 named groups ---------------------------------------- Rolling back uninstall of cryptography

Answer 1

Hi this is due to a pycparser 2.14 package update on pypi today. More details can be found in [1] and [2].

[1] http://lists.openstack.org/pipermail/openstack-dev/2016-October/104909.html
[2] https://github.com/eliben/pycparser/issues/147

Workaround to fix it is to change "pycparser===2.14"in /opt/stack/requirements/upper-constraints.txt to "pycparser===2.13"

Using pip to change the version will not work, because DevStack will uninstall 2.13 version and update it to 2.14, as required in the above file.

======================================================================== Update on 10/4(JST): according to the update in [2], this bug has been resolved. :)