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I am also facing this problem while installing Openstack Ocata on Ubuntu 16.04 and not able to create instance. On compute node getting below error inside nova compute log. Can someone please take a look

Error Log:

2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] port_response = port_client.update_port(port_id, port_req_body) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in wrapper 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] ret = obj(args, kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 768, in update_port 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] return self.put(self.port_path % (port), body=body) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in wrapper 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] ret = obj(args, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 370, in put 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] headers=headers, params=params) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in wrapper 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] ret = obj(args, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 338, in retry_request 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] headers=headers, params=params) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in wrapper 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] ret = obj(args, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 289, in do_request 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] resp, replybody = self.httpclient.do_request(action, method, body=body) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/neutronclient/client.py", line 314, in do_request 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] return self.request(url, method, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/neutronclient/client.py", line 302, in request 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] resp = super(SessionClient, self).request(args, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/adapter.py", line 142, in request 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] return self.session.request(url, method, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/positional/__init__.py", line 101, in inner 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] return wrapped(args, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/session.py", line 491, in request 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] auth_headers = self.get_auth_headers(auth) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/session.py", line 818, in get_auth_headers 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] return auth.get_headers(self, *kwargs) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/plugin.py", line 90, in get_headers 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] token = self.get_token(session) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/base.py", line 90, in get_token 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] return self.get_access(session).auth_token 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/base.py", line 136, in get_access 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] self.auth_ref = self.get_auth_ref(session) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/generic/base.py", line 196, in get_auth_ref 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] self._plugin = self._do_create_plugin(session) 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] File "/usr/lib/python2.7/dist-packages/keystoneauth1/identity/generic/base.py", line 191, in _do_create_plugin 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] raise exceptions.DiscoveryFailure('Could not determine a suitable URL ' **2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] DiscoveryFailure: Could not determine a suitable URL for the plugin 2017-08-19 10:47:49.852 1927 ERROR nova.compute.manager [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] 2017-08-19 10:47:49.854 1927 INFO nova.compute.manager [req-14996540-e1e3-422c-b0e1-163f76774103 88be5564c24343c3b5e26b0e31fd690e ba584d6a99b049109791f42b3275c793 - - -] [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] Terminating instance 2017-08-19 10:47:49.861 1927 INFO nova.virt.libvirt.driver [-] [instance: 1fe15642-9bec-4173-90fb-03fcf0494edf] Instance destroyed successfully.

Regards, Ekta