** Changed in: neutron
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1920842
Title:
"rpc_response_max_timeout" configuration variable not present in
metadata-agent
Status in neutron:
Fix Released
Bug description:
We have observed that the following Traceback is logged in metadata-
agent.log when metadata-agent encounters MessagingTimeout.
~~~
Traceback (most recent call last):
File
"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
397, in get
return self._queues[msg_id].get(block=True, timeout=timeout)
File "/usr/lib/python3.6/site-packages/eventlet/queue.py", line 322, in get
return waiter.wait()
File "/usr/lib/python3.6/site-packages/eventlet/queue.py", line 141, in wait
return get_hub().switch()
File "/usr/lib/python3.6/site-packages/eventlet/hubs/hub.py", line 298, in
switch
return self.greenlet.switch()
queue.Empty
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/neutron_lib/rpc.py", line 157, in
call
return self._original_context.call(ctxt, method, **kwargs)
File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/client.py", line
181, in call
transport_options=self.transport_options)
File "/usr/lib/python3.6/site-packages/oslo_messaging/transport.py", line
129, in _send
transport_options=transport_options)
File
"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
646, in send
transport_options=transport_options)
File
"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
634, in _send
call_monitor_timeout)
File
"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
523, in wait
message = self.waiters.get(msg_id, timeout=timeout)
File
"/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line
401, in get
'to message ID %s' % msg_id)
oslo_messaging.exceptions.MessagingTimeout: Timed out waiting for a reply to
message ID <id>
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/oslo_config/cfg.py", line 2197, in
__getattr__
return self._get(name)
File "/usr/lib/python3.6/site-packages/oslo_config/cfg.py", line 2631, in
_get
value, loc = self._do_get(name, group, namespace)
File "/usr/lib/python3.6/site-packages/oslo_config/cfg.py", line 2649, in
_do_get
info = self._get_opt_info(name, group)
File "/usr/lib/python3.6/site-packages/oslo_config/cfg.py", line 2849, in
_get_opt_info
raise NoSuchOptError(opt_name, group)
oslo_config.cfg.NoSuchOptError: no such option rpc_response_max_timeout in
group [DEFAULT]
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/usr/lib/python3.6/site-packages/neutron/agent/metadata/agent.py",
line 88, in __call__
instance_id, tenant_id = self._get_instance_and_tenant_id(req)
File "/usr/lib/python3.6/site-packages/neutron/agent/metadata/agent.py",
line 184, in _get_instance_and_tenant_id
skip_cache=skip_cache)
File "/usr/lib/python3.6/site-packages/neutron/agent/metadata/agent.py",
line 169, in _get_ports
skip_cache=skip_cache)
File "/usr/lib/python3.6/site-packages/neutron/common/cache_utils.py", line
122, in __call__
return self.func(target_self, *args, **kwargs)
File "/usr/lib/python3.6/site-packages/neutron/agent/metadata/agent.py",
line 146, in _get_ports_for_remote_address
ip_address=remote_address)
File "/usr/lib/python3.6/site-packages/neutron/agent/metadata/agent.py",
line 113, in _get_ports_from_server
return self.plugin_rpc.get_ports(self.context, filters)
File "/usr/lib/python3.6/site-packages/neutron/agent/metadata/agent.py",
line 71, in get_ports
return cctxt.call(context, 'get_ports', filters=filters)
File "/usr/lib/python3.6/site-packages/neutron_lib/rpc.py", line 173, in
call
self._original_context.timeout * 2, self.get_max_timeout())
File "/usr/lib/python3.6/site-packages/neutron_lib/rpc.py", line 133, in
get_max_timeout
return cls._max_timeout or _get_rpc_response_max_timeout()
File "/usr/lib/python3.6/site-packages/neutron_lib/rpc.py", line 95, in
_get_rpc_response_max_timeout
return TRANSPORT.conf.rpc_response_max_timeout
File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/common.py",
line 508, in __getattr__
value = getattr(self._conf, name)
File "/usr/lib/python3.6/site-packages/oslo_config/cfg.py", line 2201, in
__getattr__
raise NoSuchOptError(name)
oslo_config.cfg.NoSuchOptError: no such option rpc_response_max_timeout in
group [DEFAULT]
~~~
A similar issue has been reported in
https://bugs.launchpad.net/neutron/+bug/1880934 and fixed already. We
need the same fix for metadata-agent.
Note: This issue was found in stable/train deployment with ml2+ovs
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