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[Bug 1650028] [NEW] Unexpected exception in API method when adding external network interface to an instance

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: James Okken <1650028@xxxxxxxxxxxxxxxxxx>
Date: Wed, 14 Dec 2016 21:36:24 -0000
Reply-to: Bug 1650028 <1650028@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

hi,

im attempting to debug fuel deployed openstack why I get an error when
adding the default created external network as an interface to an
instance. adding the default internal network works no problem.

I find this in the controllers nova log file (i attached this full log
and other logs too)

<179>Dec 12 17:58:12 node-1 nova-api: 2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions [req-6837530a-bf7f-4606-96d5-a810a0417802 19d9fea8ad7744779ba2c81e1ad36e76 fcff98f1c7a34a86be56c0a3d069c280 - - -] Unexpected exception in API method
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions Traceback (most recent call last):
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 478, in wrapped
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return f(*args, **kwargs)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/attach_interfaces.py", line 117, in create
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     instance, network_id, port_id, req_ip)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 234, in wrapped
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return func(self, context, target, *args, **kwargs)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 223, in inner
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return function(self, context, instance, *args, **kwargs)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 204, in inner
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return f(self, context, instance, *args, **kw)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 3177, in attach_interface
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     requested_ip=requested_ip)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/rpcapi.py", line 365, in attach_interface
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     port_id=port_id, requested_ip=requested_ip)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py", line 158, in call
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     retry=self.retry)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/transport.py", line 90, in _send
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     timeout=timeout, retry=retry)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py", line 533, in send
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     retry=retry)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py", line 524, in _send
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     raise result
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions PortBindingFailed_Remote: Binding failed for port bf22bf18-a5e2-4d55-9523-b1126ad48ea9, please check neutron logs for more information.
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions Traceback (most recent call last):
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     executor_callback))
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     executor_callback)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 129, in _do_dispatch
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     result = func(ctxt, **new_args)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 89, in wrapped
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     payload)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 72, in wrapped
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return f(self, context, *args, **kw)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 378, in decorated_function
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     kwargs['instance'], e, sys.exc_info())
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 366, in decorated_function
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return function(self, context, *args, **kwargs)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4948, in attach_interface
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     bind_host_id=bind_host_id)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 874, in allocate_port_for_instance
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     bind_host_id=bind_host_id)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 744, in allocate_for_instance
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     self._delete_ports(neutron, instance, created_port_ids)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 736, in allocate_for_instance
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     security_group_ids, available_macs, dhcp_opts)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 359, in _create_port
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     raise exception.PortBindingFailed(port_id=port_id)
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions PortBindingFailed: Binding failed for port bf22bf18-a5e2-4d55-9523-b1126ad48ea9, please check neutron logs for more information.
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
<182>Dec 12 17:58:12 node-1 nova-api: 2016-12-12 17:58:12.404 8853 INFO nova.api.openstack.wsgi [req-6837530a-bf7f-4606-96d5-a810a0417802 19d9fea8ad7744779ba2c81e1ad36e76 fcff98f1c7a34a86be56c0a3d069c280 - - -] HTTP exception thrown: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'PortBindingFailed_Remote'>
<183>Dec 12 17:58:12 node-1 nova-api: 2016-12-12 17:58:12.405 8853 DEBUG nova.api.openstack.wsgi [req-6837530a-bf7f-4606-96d5-a810a0417802 19d9fea8ad7744779ba2c81e1ad36e76 fcff98f1c7a34a86be56c0a3d069c280 - - -] Returning 500 to user: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: add external interface-attach network nova

** Attachment added: "nova and neutron logs from controller and compute nodes"
   https://bugs.launchpad.net/bugs/1650028/+attachment/4791766/+files/4_logs.zip

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https://bugs.launchpad.net/bugs/1650028

Title:
  Unexpected exception in API method when adding external network
  interface to an instance

Status in OpenStack Compute (nova):
  New

Bug description:
  hi,

  im attempting to debug fuel deployed openstack why I get an error when
  adding the default created external network as an interface to an
  instance. adding the default internal network works no problem.

  I find this in the controllers nova log file (i attached this full log
  and other logs too)

  <179>Dec 12 17:58:12 node-1 nova-api: 2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions [req-6837530a-bf7f-4606-96d5-a810a0417802 19d9fea8ad7744779ba2c81e1ad36e76 fcff98f1c7a34a86be56c0a3d069c280 - - -] Unexpected exception in API method
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions Traceback (most recent call last):
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 478, in wrapped
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return f(*args, **kwargs)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/validation/__init__.py", line 73, in wrapper
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return func(*args, **kwargs)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/attach_interfaces.py", line 117, in create
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     instance, network_id, port_id, req_ip)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 234, in wrapped
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return func(self, context, target, *args, **kwargs)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 223, in inner
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return function(self, context, instance, *args, **kwargs)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 204, in inner
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return f(self, context, instance, *args, **kw)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/api.py", line 3177, in attach_interface
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     requested_ip=requested_ip)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/rpcapi.py", line 365, in attach_interface
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     port_id=port_id, requested_ip=requested_ip)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py", line 158, in call
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     retry=self.retry)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/transport.py", line 90, in _send
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     timeout=timeout, retry=retry)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py", line 533, in send
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     retry=retry)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py", line 524, in _send
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     raise result
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions PortBindingFailed_Remote: Binding failed for port bf22bf18-a5e2-4d55-9523-b1126ad48ea9, please check neutron logs for more information.
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions Traceback (most recent call last):
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     executor_callback))
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     executor_callback)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 129, in _do_dispatch
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     result = func(ctxt, **new_args)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 89, in wrapped
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     payload)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/exception.py", line 72, in wrapped
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return f(self, context, *args, **kw)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 378, in decorated_function
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     kwargs['instance'], e, sys.exc_info())
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 366, in decorated_function
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     return function(self, context, *args, **kwargs)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 4948, in attach_interface
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     bind_host_id=bind_host_id)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 874, in allocate_port_for_instance
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     bind_host_id=bind_host_id)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 744, in allocate_for_instance
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     self._delete_ports(neutron, instance, created_port_ids)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 195, in __exit__
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     six.reraise(self.type_, self.value, self.tb)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 736, in allocate_for_instance
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     security_group_ids, available_macs, dhcp_opts)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 359, in _create_port
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions     raise exception.PortBindingFailed(port_id=port_id)
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions PortBindingFailed: Binding failed for port bf22bf18-a5e2-4d55-9523-b1126ad48ea9, please check neutron logs for more information.
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  2016-12-12 17:58:12.364 8853 ERROR nova.api.openstack.extensions 
  <182>Dec 12 17:58:12 node-1 nova-api: 2016-12-12 17:58:12.404 8853 INFO nova.api.openstack.wsgi [req-6837530a-bf7f-4606-96d5-a810a0417802 19d9fea8ad7744779ba2c81e1ad36e76 fcff98f1c7a34a86be56c0a3d069c280 - - -] HTTP exception thrown: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <class 'PortBindingFailed_Remote'>
  <183>Dec 12 17:58:12 node-1 nova-api: 2016-12-12 17:58:12.405 8853 DEBUG nova.api.openstack.wsgi [req-6837530a-bf7f-4606-96d5-a810a0417802 19d9fea8ad7744779ba2c81e1ad36e76 fcff98f1c7a34a86be56c0a3d069c280 - - -] Returning 500 to user: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.

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Follow ups

[Bug 1650028] Re: Unexpected exception in API method when adding external network interface to an instance
From: Launchpad Bug Tracker, 2017-06-17