Comment 17 for bug 1476770

We are seeing this in stable/kilo as well, and I believe I know the problem.

First, we isolate each service into its own virtualenv, so the only requirements that will come in are those of the project itself (nova).

Nova requires python-glanceclient, which in turn requires requests, and this requirement is uncapped. The requests library had a new release recently, http://docs.python-requests.org/en/latest/community/updates/#id1 , which bundles urllib3 1.12. Now python-glanceclient is trying to use this new requests and urllib3 and it has a bad time. I was able to resolve this simply by downgrading the requests library to 2.7.0, which was the previous release.

I believe that global-requirements for stable/kilo should cap requests to <=2.7.0 and after that's done, python-glanceclient should also be capped.

Meanwhile we can downgrade requests in our virtualenv as part of the deployment and not be blocked by this bug any longer.