[Bug 1081037] [NEW] python-nova: not region aware when used with quantum

[Stephen Gran]

Public bug reported:

Hi,

When used with quantum, python-nova does not pass in any region
information when constructing a quantum-client, making the compute
services on my multi-region setup fail when multiple endpoints are
returned by keystone.

The problem is that in network/quantumv2/__init__.py, _get_auth_token()
a quantumclient.client.HTTPClient is created without a region_name
argument.

In order to make this work, I had to edit nova/network/quantumv2/api.py
and add a new parameter to quantum_opts:

    cfg.StrOpt('quantum_region_name',
               help='region name for connecting to quantum in admin context'),

and then pass that to the httpclient constructor in
nova/network/quantumv2/__init__.py with:

            timeout=FLAGS.quantum_url_timeout,
            region_name=FLAGS.quantum_region_name,
            auth_strategy=FLAGS.quantum_auth_strategy)

and finally set quantum_region_name in nova.conf.

There may be a more elegant way of achieving all this.

** Affects: nova (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  python-nova: not region aware when used with quantum

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