Public bug reported:

I'm unable to create instance using default security group on Openstack
Ocata via dashboard.


2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
[req-bd0cdaf0-ac96-4307-ae3d-9859af5b2f7f 662947fa0306423f9ac255d059886e7c 
1ecb7f39e37e466387b75a5f218e8b1a - default default] Neutron Error getting 
security groups
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
Traceback (most recent call last):
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File 
"/usr/lib/python2.7/dist-packages/nova/network/security_group/neutron_driver.py",
 line 187, in list
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  security_groups = neutron.list_security_groups(**params).get(
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, 
in wrapper
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  ret = obj(*args, **kwargs)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 936, 
in list_security_groups
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  retrieve_all, **_params)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, 
in wrapper
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  ret = obj(*args, **kwargs)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 376, 
in list
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  for r in self._pagination(collection, path, **params):
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 391, 
in _pagination
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  res = self.get(path, params=params)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, 
in wrapper
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  ret = obj(*args, **kwargs)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 361, 
in get
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  headers=headers, params=params)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, 
in wrapper
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  ret = obj(*args, **kwargs)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 338, 
in retry_request
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  headers=headers, params=params)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, 
in wrapper
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  ret = obj(*args, **kwargs)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 301, 
in do_request
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  self._handle_fault_response(status_code, replybody, resp)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, 
in wrapper
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  ret = obj(*args, **kwargs)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 276, 
in _handle_fault_response
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  exception_handler_v20(status_code, error_body)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 92, 
in exception_handler_v20
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver   
  request_ids=request_ids)
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
ServiceUnavailable: The server is currently unavailable. Please try again at a 
later time.<br /><br />
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
Neutron server returns request_ids: ['req-f0256bfc-f4a8-4aa5-be31-317de5315e2c']
2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
[req-bd0cdaf0-ac96-4307-ae3d-9859af5b2f7f 662947fa0306423f9ac255d059886e7c 
1ecb7f39e37e466387b75a5f218e8b1a - default default] Unexpected exception in API 
method
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions Traceback 
(most recent call last):
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 338, 
in wrapped
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     return 
f(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/security_groups.py",
 line 168, in index
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
search_opts=search_opts)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/security_group/neutron_driver.py",
 line 191, in list
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
LOG.exception(_LE("Neutron Error getting security groups"))
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
self.force_reraise()
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in 
force_reraise
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
six.reraise(self.type_, self.value, self.tb)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/security_group/neutron_driver.py",
 line 187, in list
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
security_groups = neutron.list_security_groups(**params).get(
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 936, in 
list_security_groups
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
retrieve_all, **_params)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 376, in 
list
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     for r in 
self._pagination(collection, path, **params):
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 391, in 
_pagination
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     res = 
self.get(path, params=params)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 361, in 
get
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
headers=headers, params=params)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 338, in 
retry_request
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
headers=headers, params=params)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 301, in 
do_request
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
self._handle_fault_response(status_code, replybody, resp)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 276, in 
_handle_fault_response
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
exception_handler_v20(status_code, error_body)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 92, in 
exception_handler_v20
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
request_ids=request_ids)
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
ServiceUnavailable: The server is currently unavailable. Please try again at a 
later time.<br /><br />
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions Neutron server 
returns request_ids: ['req-f0256bfc-f4a8-4aa5-be31-317de5315e2c']
2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
2017-11-12 13:34:28.357 3480 INFO nova.api.openstack.wsgi 
[req-bd0cdaf0-ac96-4307-ae3d-9859af5b2f7f 662947fa0306423f9ac255d059886e7c 
1ecb7f39e37e466387b75a5f218e8b1a - default default] 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.ServiceUnavailable'>

** Affects: nova
     Importance: Undecided
         Status: New

** Attachment added: "nova-api.log"
   
https://bugs.launchpad.net/bugs/1731731/+attachment/5007706/+files/nova-api.log

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https://bugs.launchpad.net/bugs/1731731

Title:
  unable to create security group

Status in OpenStack Compute (nova):
  New

Bug description:
  I'm unable to create instance using default security group on
  Openstack Ocata via dashboard.

  
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
[req-bd0cdaf0-ac96-4307-ae3d-9859af5b2f7f 662947fa0306423f9ac255d059886e7c 
1ecb7f39e37e466387b75a5f218e8b1a - default default] Neutron Error getting 
security groups
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
Traceback (most recent call last):
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File 
"/usr/lib/python2.7/dist-packages/nova/network/security_group/neutron_driver.py",
 line 187, in list
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    security_groups = neutron.list_security_groups(**params).get(
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 
99, in wrapper
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    ret = obj(*args, **kwargs)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
936, in list_security_groups
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    retrieve_all, **_params)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 
99, in wrapper
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    ret = obj(*args, **kwargs)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
376, in list
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    for r in self._pagination(collection, path, **params):
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
391, in _pagination
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    res = self.get(path, params=params)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 
99, in wrapper
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    ret = obj(*args, **kwargs)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
361, in get
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    headers=headers, params=params)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 
99, in wrapper
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    ret = obj(*args, **kwargs)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
338, in retry_request
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    headers=headers, params=params)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 
99, in wrapper
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    ret = obj(*args, **kwargs)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
301, in do_request
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    self._handle_fault_response(status_code, replybody, resp)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 
99, in wrapper
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    ret = obj(*args, **kwargs)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
276, in _handle_fault_response
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    exception_handler_v20(status_code, error_body)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  File "/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 
92, in exception_handler_v20
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
    request_ids=request_ids)
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
ServiceUnavailable: The server is currently unavailable. Please try again at a 
later time.<br /><br />
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
Neutron server returns request_ids: ['req-f0256bfc-f4a8-4aa5-be31-317de5315e2c']
  2017-11-12 13:34:26.956 3480 ERROR nova.network.security_group.neutron_driver 
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
[req-bd0cdaf0-ac96-4307-ae3d-9859af5b2f7f 662947fa0306423f9ac255d059886e7c 
1ecb7f39e37e466387b75a5f218e8b1a - default default] Unexpected exception in API 
method
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions Traceback 
(most recent call last):
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/api/openstack/extensions.py", line 338, 
in wrapped
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     return 
f(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/api/openstack/compute/security_groups.py",
 line 168, in index
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
search_opts=search_opts)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/security_group/neutron_driver.py",
 line 191, in list
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
LOG.exception(_LE("Neutron Error getting security groups"))
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 220, in __exit__
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
self.force_reraise()
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 196, in 
force_reraise
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
six.reraise(self.type_, self.value, self.tb)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/security_group/neutron_driver.py",
 line 187, in list
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
security_groups = neutron.list_security_groups(**params).get(
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 936, in 
list_security_groups
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
retrieve_all, **_params)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 376, in 
list
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     for r in 
self._pagination(collection, path, **params):
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 391, in 
_pagination
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     res = 
self.get(path, params=params)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 361, in 
get
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
headers=headers, params=params)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 338, in 
retry_request
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
headers=headers, params=params)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 301, in 
do_request
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
self._handle_fault_response(status_code, replybody, resp)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/nova/network/neutronv2/api.py", line 99, in 
wrapper
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     ret = 
obj(*args, **kwargs)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 276, in 
_handle_fault_response
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
exception_handler_v20(status_code, error_body)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions   File 
"/usr/lib/python2.7/dist-packages/neutronclient/v2_0/client.py", line 92, in 
exception_handler_v20
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions     
request_ids=request_ids)
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
ServiceUnavailable: The server is currently unavailable. Please try again at a 
later time.<br /><br />
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions Neutron 
server returns request_ids: ['req-f0256bfc-f4a8-4aa5-be31-317de5315e2c']
  2017-11-12 13:34:27.985 3480 ERROR nova.api.openstack.extensions 
  2017-11-12 13:34:28.357 3480 INFO nova.api.openstack.wsgi 
[req-bd0cdaf0-ac96-4307-ae3d-9859af5b2f7f 662947fa0306423f9ac255d059886e7c 
1ecb7f39e37e466387b75a5f218e8b1a - default default] 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.ServiceUnavailable'>

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