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[Bug 1384228] Re: Exception should be raised if nova has failed to add fixed ip

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Matt Riedemann <mriedem@xxxxxxxxxx>
Date: Wed, 14 Oct 2015 21:21:16 -0000
Reply-to: Bug 1384228 <1384228@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Changed in: nova
       Status: Confirmed => Invalid

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https://bugs.launchpad.net/bugs/1384228

Title:
  Exception should be raised if nova has failed to add fixed ip

Status in OpenStack Compute (nova):
  Invalid

Bug description:
  I have the following code

  try:
      instance.add_fixed_ip(network.id)
  except Exception as e:
      ...

  The issue is that in Nova compute logs I can see exception, but it is not thrown on client side.
  Since add_fixed_ip() returns nothing, it is difficult to find if fixed address was assigned.

  Exception:
  """
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 134, in _dispatch_and_reply
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 177, in _dispatch
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 123, in _do_dispatch
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/compute/manager.py", line 393, in decorated_function
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/exception.py", line 88, in wrapped
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     payload)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/exception.py", line 71, in wrapped
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/compute/manager.py", line 274, in decorated_function
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     pass
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/compute/manager.py", line 260, in decorated_function
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/compute/manager.py", line 303, in decorated_function
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     e, sys.exc_info())
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/compute/manager.py", line 290, in decorated_function
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/compute/manager.py", line 3621, in add_fixed_ip_to_instance
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     network_id)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/network/api.py", line 49, in wrapper
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     res = f(self, context, *args, **kwargs)
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher   File "/home/vb/.virtualenvs/ecs/local/lib/python2.7/site-packages/nova/network/neutronv2/api.py", line 562, in add_fixed_ip_to_instance
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher     instance_id=instance['uuid'])
  2014-10-22 13:06:59.936 1015 TRACE oslo.messaging.rpc.dispatcher NetworkNotFoundForInstance: Network could not be found for instance b58e9e7a-b65e-494f-a5bb-43b2a1ead197.
  """

  This exception, most probably, was caused by dhcp agent failing to find tap device:
  """
  Stderr: 'Cannot find device "tap41e55d74-72"\n'
  """

  The device indeed was missing, but after I restarted all services, it
  did not appear.

  I use Icehouse.

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References

[Bug 1384228] [NEW] Exception should be raised if nova has failed to add fixed ip
From: Vitalii, 2014-10-22