Comment 2 for bug 1522402

Thanks Melanie!

From what you explained I get it that working with openstackclient is fine but how about Horizon operation?

Now whenever I browse the /project/ url of Horizon for example I get the "cannot access" error in Horizon and in the nova.log I see

2015-12-03 17:45:05.815 17457 ERROR nova.compute.manager [req-bc22b21c-cf6a-4dbd-97f2-772301d65a80 – – – – -] [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] An error occurred while refreshing the network cache.
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] Traceback (most recent call last):
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/nova/compute/manager.py”, line 5596, in _heal_instance_info_cache
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] self._get_instance_nw_info(context, instance)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/nova/compute/manager.py”, line 1360, in _get_instance_nw_info
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] return self.network_api.get_instance_nw_info(context, instance)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py”, line 747, in get_instance_nw_info
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] preexisting_port_ids)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py”, line 763, in _get_instance_nw_info
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] preexisting_port_ids)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py”, line 1515, in _build_network_info_model
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] client = get_client(context, admin=True)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/nova/network/neutronv2/api.py”, line 205, in get_client
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] auth_token = _ADMIN_AUTH.get_token(_SESSION)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/keystoneclient/auth/identity/base.py”, line 104, in get_token
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] return self.get_access(session).auth_token
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/keystoneclient/auth/identity/base.py”, line 144, in get_access
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] self.auth_ref = self.get_auth_ref(session)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/keystoneclient/auth/identity/v2.py”, line 78, in get_auth_ref
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] authenticated=False, log=False)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/keystoneclient/session.py”, line 497, in post
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] return self.request(url, ‘POST’, **kwargs)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/keystoneclient/utils.py”, line 318, in inner
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] return func(*args, **kwargs)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] File “/usr/lib/python2.7/site-packages/keystoneclient/session.py”, line 397, in request
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] raise exceptions.from_response(resp, method, url)
2015-12-03 17:45:05.815 17457 TRACE nova.compute.manager [instance: eaec87f9-6e7c-46c8-8936-39f882843b52] NotFound: The resource could not be found. (HTTP 404) (Request-ID: req-9f014d4a-1fcb-4c5b-98bd-1ed6b16f2099)

How shall I fix that one?
Or shall I stick to Keystone V2 in nova.conf?
Is it possible to have Horizon running the SSO and Keystone V3 but leave Nova to contact Keystone via v2 API?