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[Bug 1629484] [NEW] Key error when try to assign a floating ip to a VM

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Hao Chen <Chenh1987@xxxxxxxxx>
Date: Fri, 30 Sep 2016 23:00:17 -0000
Reply-to: Bug 1629484 <1629484@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

We have an environment with designate and DNS plugin enabled. When we
upgrade to newton we got a problem that we can't assign the floating ip
to the VM because of an key error.

Here is the error message from neutron server

./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource Traceback (most recent call last):
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/resource.py", line 79, in resource
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     result = method(request=request, **args)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 604, in update
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return self._update(request, id, body, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 88, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     setattr(e, '_RETRY_EXCEEDED', True)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 84, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 151, in wrapper
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     ectxt.value = e.inner_exc
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 139, in wrapper
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 124, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     traceback.format_exc())
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 119, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*dup_args, **dup_kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 652, in _update
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     obj = obj_updater(request.context, id, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 159, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return method(*args, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 88, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     setattr(e, '_RETRY_EXCEEDED', True)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 84, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 151, in wrapper
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     ectxt.value = e.inner_exc
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 139, in wrapper
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 124, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     traceback.format_exc())
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 119, in wrapped
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*dup_args, **dup_kwargs)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 1015, in update_floatingip
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     context, id, floatingip)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/l3_db.py", line 1355, in _update_floatingip
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     context, floatingip_db)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/dns_db.py", line 210, in _process_dns_floatingip_update_precommit
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     context, floatingip_data))
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/dns_db.py", line 313, in _get_requested_state_for_external_dns_service_update
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     if floatingip_data['port_id']:
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/models.py", line 54, in __getitem__
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return getattr(self, key)
./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource AttributeError: 'FloatingIP' object has no attribute 'port_id'


After digging more it seems like there are several places in the code try to get the value for "port_id" which doesn't exist

https://github.com/openstack/neutron/blob/stable/newton/neutron/db/dns_db.py#L313
https://github.com/openstack/neutron/blob/stable/newton/neutron/db/dns_db.py#L275
https://github.com/openstack/neutron/blob/stable/newton/neutron/db/dns_db.py#L281

from
https://github.com/openstack/neutron/blob/stable/newton/neutron/db/l3_db.py#L1041
we can see that port_id is actually the "fix_port_id" attribute in
floatingip_db object.

Fix the previous key I mentioned will fix the floating ip assignment.

** Affects: neutron
     Importance: Undecided
     Assignee: Hao Chen (chenh1987)
         Status: New

** Changed in: neutron
     Assignee: (unassigned) => Hao Chen (chenh1987)

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https://bugs.launchpad.net/bugs/1629484

Title:
  Key error when try to assign a floating ip to a VM

Status in neutron:
  New

Bug description:
  We have an environment with designate and DNS plugin enabled. When we
  upgrade to newton we got a problem that we can't assign the floating
  ip to the VM because of an key error.

  Here is the error message from neutron server

  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource Traceback (most recent call last):
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/resource.py", line 79, in resource
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     result = method(request=request, **args)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 604, in update
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return self._update(request, id, body, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 88, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     setattr(e, '_RETRY_EXCEEDED', True)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 84, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 151, in wrapper
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     ectxt.value = e.inner_exc
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 139, in wrapper
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 124, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     traceback.format_exc())
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 119, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*dup_args, **dup_kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/api/v2/base.py", line 652, in _update
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     obj = obj_updater(request.context, id, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 159, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return method(*args, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 88, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     setattr(e, '_RETRY_EXCEEDED', True)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 84, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 151, in wrapper
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     ectxt.value = e.inner_exc
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/api.py", line 139, in wrapper
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*args, **kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 124, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     traceback.format_exc())
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     self.force_reraise()
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     six.reraise(self.type_, self.value, self.tb)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/api.py", line 119, in wrapped
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return f(*dup_args, **dup_kwargs)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/l3_dvr_db.py", line 1015, in update_floatingip
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     context, id, floatingip)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/l3_db.py", line 1355, in _update_floatingip
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     context, floatingip_db)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/dns_db.py", line 210, in _process_dns_floatingip_update_precommit
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     context, floatingip_data))
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/neutron/db/dns_db.py", line 313, in _get_requested_state_for_external_dns_service_update
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     if floatingip_data['port_id']:
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource   File "/usr/lib/python2.7/site-packages/oslo_db/sqlalchemy/models.py", line 54, in __getitem__
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource     return getattr(self, key)
  ./neutron/neutron-server.log:2016-09-30 22:00:36.797 527 ERROR neutron.api.v2.resource AttributeError: 'FloatingIP' object has no attribute 'port_id'

  
  After digging more it seems like there are several places in the code try to get the value for "port_id" which doesn't exist

  https://github.com/openstack/neutron/blob/stable/newton/neutron/db/dns_db.py#L313
  https://github.com/openstack/neutron/blob/stable/newton/neutron/db/dns_db.py#L275
  https://github.com/openstack/neutron/blob/stable/newton/neutron/db/dns_db.py#L281

  from
  https://github.com/openstack/neutron/blob/stable/newton/neutron/db/l3_db.py#L1041
  we can see that port_id is actually the "fix_port_id" attribute in
  floatingip_db object.

  Fix the previous key I mentioned will fix the floating ip assignment.

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Follow ups

[Bug 1629484] Re: Key error when try to assign a floating ip to a VM
From: OpenStack Infra, 2016-10-04