Public bug reported:
The interface attach code does not handle if placement is down while
nova try to queries allocation candidates from placement. The
safe_connect decorator on the report client method returns None when
placement is not available but the manager code tries to unpack the
return value to a 3 tuple[1].
res = self.reportclient.get_allocation_candidates(context, rr)
alloc_reqs, provider_sums, version = res
This leads to a TypeError and HTTP 500 response code.
2021-08-07 09:59:28,967 WARNING [nova.scheduler.client.report] Placement API
service is not responding.
2021-08-07 09:59:29,130 ERROR [oslo_messaging.rpc.server] Exception during
message handling
Traceback (most rece
nt call last):
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 165, in _process_incoming
res = self.dispatcher.dispatch(message)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 309, in dispatch
return self._do_dispatch(endpoint, method, ctxt, args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 229, in _do_dispatch
result = func(ctxt, **new_args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 241, in inner
return func(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 71, in
wrapped
_emit_versioned_exception_notification(
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 63, in
wrapped
return f(self, context, *args, **kw)
File "/root/rtox/nova/functional-py38/nova/compute/utils.py", line 1433, in
decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 211, in
decorated_function
compute_utils.add_instance_fault_from_exc(context,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 200, in
decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7735, in
attach_interface
return do_attach_interface(context, instance, network_id, port_id,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_concurrency/lockutils.py",
line 360, in inner
return f(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7732, in
do_attach_interface
return self._attach_interface(context, instance, network_id,
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7787, in
_attach_interface
result = self._allocate_port_resource_for_instance(
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7656, in
_allocate_port_resource_for_instance
alloc_reqs, provider_sums, version = res
TypeError: cannot unpack non-iterable NoneType object
2021-08-07 09:59:29,131 ERROR [nova.api.openstack.wsgi] Unexpected exception in
API method
Traceback (most recent call last):
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/urllib3/connectionpool.py",
line 436, in _make_request
httplib_response = conn.getresponse(buffering=True)
TypeError: getresponse() got an unexpected keyword argument 'buffering'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/root/rtox/nova/functional-py38/nova/api/openstack/wsgi.py", line 658,
in wrapped
return f(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/api/validation/__init__.py", line
110, in wrapper
return func(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/api/validation/__init__.py", line
110, in wrapper
return func(*args, **kwargs)
File
"/root/rtox/nova/functional-py38/nova/api/openstack/compute/attach_interfaces.py",
line 168, in create
vif = self.compute_api.attach_interface(context,
File "/root/rtox/nova/functional-py38/nova/comp
ute/api.py", line 226, in inner
return function(self, context, instance, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/api.py", line 153, in inner
return f(self, context, instance, *args, **kw)
File "/root/rtox/nova/functional-py38/nova/compute/api.py", line 5046, in
attach_interface
return self.compute_rpcapi.attach_interface(context,
File "/root/rtox/nova/functional-py38/nova/compute/rpcapi.py", line 570, in
attach_interface
return cctxt.call(ctxt, 'attach_interface', **kw)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/client.py",
line 175, in call
self.transport._send(self.target, msg_ctxt, msg,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/transport.py",
line 123, in _send
return self._driver.send(target, ctxt, message,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/_drivers/impl_fake.py",
line 222, in send
return self._send(target, ctxt, message, wait_for_reply, timeout,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/_drivers/impl_fake.py",
line 209, in _send
raise failure
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 165, in _process_incoming
res = self.dispatcher.dispatch(message)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 309, in dispatch
return self._do_dispatch(endpoint, method, ctxt, args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 229, in _do_dispatch
result = func(ctxt, **new_args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 241, in inner
return func(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 71, in
wrapped
_emit_versioned_exception_notification(
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 63, in
wrapped
return f(self, context, *args, **kw)
File "/root/rtox/nova/functional-py38/nova/compute/utils.py", line 1433, in
decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 211, in
decorated_function
compute_utils.add_instance_fault_from_exc(context,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 200, in
decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7735, in
attach_interface
return do_attach_interface(context, instance, network_id, port_id,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_concurrency/lockutils.py",
line 360, in inner
return f(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7732, in
do_attach_interface
return self._attach_interface(context, instance, network_id,
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7787, in
_attach_interface
result = self._allocate_port_resource_for_instance(
File "/root/rtox/nova/functional-
py38/nova/compute/manager.py", line 7656, in
_allocate_port_resource_for_instance
alloc_reqs, provider_sums, version = res
TypeError: cannot unpack non-iterable NoneType object
2021-08-07 09:59:29,133 INFO [nova.api.openstack.wsgi] HTTP exception thrown:
Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and
attach the Nova API log if possible.
<class 'TypeError'>
[1]
https://github.com/openstack/nova/blob/99536b95bcc4c1dd09099abd858233c9352afeed/nova/compute/manager.py#L7646
** Affects: nova
Importance: Undecided
Assignee: Balazs Gibizer (balazs-gibizer)
Status: New
** Affects: nova/wallaby
Importance: Undecided
Status: New
** Also affects: nova/wallaby
Importance: Undecided
Status: New
--
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1939193
Title:
interface attach with QoS port fails with "cannot unpack non-iterable
NoneType object" if Placement is down
Status in OpenStack Compute (nova):
New
Status in OpenStack Compute (nova) wallaby series:
New
Bug description:
The interface attach code does not handle if placement is down while
nova try to queries allocation candidates from placement. The
safe_connect decorator on the report client method returns None when
placement is not available but the manager code tries to unpack the
return value to a 3 tuple[1].
res = self.reportclient.get_allocation_candidates(context, rr)
alloc_reqs, provider_sums, version = res
This leads to a TypeError and HTTP 500 response code.
2021-08-07 09:59:28,967 WARNING [nova.scheduler.client.report] Placement API
service is not responding.
2021-08-07 09:59:29,130 ERROR [oslo_messaging.rpc.server] Exception during
message handling
Traceback (most rece
nt call last):
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 165, in _process_incoming
res = self.dispatcher.dispatch(message)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 309, in dispatch
return self._do_dispatch(endpoint, method, ctxt, args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 229, in _do_dispatch
result = func(ctxt, **new_args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 241, in inner
return func(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 71,
in wrapped
_emit_versioned_exception_notification(
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 63,
in wrapped
return f(self, context, *args, **kw)
File "/root/rtox/nova/functional-py38/nova/compute/utils.py", line 1433, in
decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 211,
in decorated_function
compute_utils.add_instance_fault_from_exc(context,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 200,
in decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7735,
in attach_interface
return do_attach_interface(context, instance, network_id, port_id,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_concurrency/lockutils.py",
line 360, in inner
return f(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7732,
in do_attach_interface
return self._attach_interface(context, instance, network_id,
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7787,
in _attach_interface
result = self._allocate_port_resource_for_instance(
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7656,
in _allocate_port_resource_for_instance
alloc_reqs, provider_sums, version = res
TypeError: cannot unpack non-iterable NoneType object
2021-08-07 09:59:29,131 ERROR [nova.api.openstack.wsgi] Unexpected exception
in API method
Traceback (most recent call last):
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/urllib3/connectionpool.py",
line 436, in _make_request
httplib_response = conn.getresponse(buffering=True)
TypeError: getresponse() got an unexpected keyword argument 'buffering'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/root/rtox/nova/functional-py38/nova/api/openstack/wsgi.py", line
658, in wrapped
return f(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/api/validation/__init__.py",
line 110, in wrapper
return func(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/api/validation/__init__.py",
line 110, in wrapper
return func(*args, **kwargs)
File
"/root/rtox/nova/functional-py38/nova/api/openstack/compute/attach_interfaces.py",
line 168, in create
vif = self.compute_api.attach_interface(context,
File "/root/rtox/nova/functional-py38/nova/comp
ute/api.py", line 226, in inner
return function(self, context, instance, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/api.py", line 153, in
inner
return f(self, context, instance, *args, **kw)
File "/root/rtox/nova/functional-py38/nova/compute/api.py", line 5046, in
attach_interface
return self.compute_rpcapi.attach_interface(context,
File "/root/rtox/nova/functional-py38/nova/compute/rpcapi.py", line 570, in
attach_interface
return cctxt.call(ctxt, 'attach_interface', **kw)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/client.py",
line 175, in call
self.transport._send(self.target, msg_ctxt, msg,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/transport.py",
line 123, in _send
return self._driver.send(target, ctxt, message,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/_drivers/impl_fake.py",
line 222, in send
return self._send(target, ctxt, message, wait_for_reply, timeout,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/_drivers/impl_fake.py",
line 209, in _send
raise failure
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 165, in _process_incoming
res = self.dispatcher.dispatch(message)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 309, in dispatch
return self._do_dispatch(endpoint, method, ctxt, args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/dispatcher.py",
line 229, in _do_dispatch
result = func(ctxt, **new_args)
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_messaging/rpc/server.py",
line 241, in inner
return func(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 71,
in wrapped
_emit_versioned_exception_notification(
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/exception_wrapper.py", line 63,
in wrapped
return f(self, context, *args, **kw)
File "/root/rtox/nova/functional-py38/nova/compute/utils.py", line 1433, in
decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 211,
in decorated_function
compute_utils.add_instance_fault_from_exc(context,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 227, in __exit__
self.force_reraise()
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_utils/excutils.py",
line 200, in force_reraise
raise self.value
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 200,
in decorated_function
return function(self, context, *args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7735,
in attach_interface
return do_attach_interface(context, instance, network_id, port_id,
File
"/root/rtox/nova/functional-py38/.tox/functional-py38/lib/python3.8/site-packages/oslo_concurrency/lockutils.py",
line 360, in inner
return f(*args, **kwargs)
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7732,
in do_attach_interface
return self._attach_interface(context, instance, network_id,
File "/root/rtox/nova/functional-py38/nova/compute/manager.py", line 7787,
in _attach_interface
result = self._allocate_port_resource_for_instance(
File "/root/rtox/nova/functional-
py38/nova/compute/manager.py", line 7656, in
_allocate_port_resource_for_instance
alloc_reqs, provider_sums, version = res
TypeError: cannot unpack non-iterable NoneType object
2021-08-07 09:59:29,133 INFO [nova.api.openstack.wsgi] HTTP exception thrown:
Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and
attach the Nova API log if possible.
<class 'TypeError'>
[1]
https://github.com/openstack/nova/blob/99536b95bcc4c1dd09099abd858233c9352afeed/nova/compute/manager.py#L7646
To manage notifications about this bug go to:
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