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[Alex Xu <soulxu@xxxxxxxxx>]

*** This bug is a duplicate of bug 1513879 ***
    https://bugs.launchpad.net/bugs/1513879

** This bug is no longer a duplicate of bug 1488537
   Lack of graceful handling of 404 error from neutron
** This bug has been marked a duplicate of bug 1513879
   NeutronClientException: 404 Not Found

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https://bugs.launchpad.net/bugs/1512250

Title:
  nova api crashes on floating ip creation

Status in OpenStack Compute (nova):
  New

Bug description:
  I'm using Openstack Liberty

  2015-11-02 13:36:26.522 118707 INFO nova.osapi_compute.wsgi.server [req-3a1d6c46-a04e-452b-b5b5-240f4d8f7ff7 4fee825c04e04bcc8779fbc0e1c75154 d8c1e9ee4f6e429199a85389ab64868d - - -] 115.124.106.199 "GET /v2/ HTTP/1.1" status: 200 len: 572 time: 0.0321729
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions [req-f37d3666-00cf-4b69-bd07-1764cb5ab663 4fee825c04e04bcc8779fbc0e1c75154 d8c1e9ee4f6e429199a85389ab64868d - - -] Unexpected exception in API method
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions Traceback (most recent call last):
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 478, in wrapped
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     return f(*args, **kwargs)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/floating_ips.py", line 122, in index
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     floating_ips = self.network_api.get_floating_ips_by_project(context)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 1402, in get_floating_ips_by_project
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     fips = client.list_floatingips(tenant_id=project_id)['floatingips']
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 102, in with_params
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     ret = self.function(instance, *args, **kwargs)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 731, in list_floatingips
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     **_params)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 307, in list
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     for r in self._pagination(collection, path, **params):
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 320, in _pagination
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     res = self.get(path, params=params)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 293, in get
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     headers=headers, params=params)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 270, in retry_request
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     headers=headers, params=params)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 211, in do_request
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     self._handle_fault_response(status_code, replybody)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 185, in _handle_fault_response
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     exception_handler_v20(status_code, des_error_body)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions   File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 83, in exception_handler_v20
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions     message=message)
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions NeutronClientException: 404 Not Found
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions 
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions The resource could not be found.
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions 
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions    
  2015-11-02 13:36:26.695 118707 ERROR nova.api.openstack.extensions 
  2015-11-02 13:36:26.697 118707 INFO nova.api.openstack.wsgi [req-f37d3666-00cf-4b69-bd07-1764cb5ab663 4fee825c04e04bcc8779fbc0e1c75154 d8c1e9ee4f6e429199a85389ab64868d - - -] HTTP exception thrown: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
  <class 'neutronclient.common.exceptions.NeutronClientException'>
  2015-11-02 13:36:26.698 118707 INFO nova.osapi_compute.wsgi.server [req-f37d3666-00cf-4b69-bd07-1764cb5ab663 4fee825c04e04bcc8779fbc0e1c75154 d8c1e9ee4f6e429199a85389ab64868d - - -] 115.124.106.199 "GET /v2/d8c1e9ee4f6e429199a85389ab64868d/os-floating-ips HTTP/1.1" status: 500 len: 459 time: 0.0432839

  
  Reproduce Steps:

  Clean installation of Openstack Liberty wrt
  http://docs.openstack.org/liberty/install-guide-ubuntu/ and
  http://docs.openstack.org/liberty/install-guide-ubuntu/neutron-
  controller-install-option1.html

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