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[Bug 1560945] [NEW] Unable to create DVR+HA routers

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: John Schwarz <jschwarz@xxxxxxxxxx>
Date: Wed, 23 Mar 2016 11:59:26 -0000
Reply-to: Bug 1560945 <1560945@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

When creating a new DVR+HA, the router is created (the API returns
successfully) but the l3 agent enters an endless loop:

2016-03-23 13:57:37.340 ERROR neutron.agent.l3.agent [-] Failed to process compatible router 'a04b3fd7-d46c-4520-82af-18d16835469d'
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent Traceback (most recent call last):
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/agent.py", line 497, in _process_router_update
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self._process_router_if_compatible(router)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/agent.py", line 436, in _process_router_if_compatible
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self._process_updated_router(router)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/agent.py", line 450, in _process_updated_router
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     ri.process(self)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_edge_ha_router.py", line 92, in process
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(DvrEdgeHaRouter, self).process(agent)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_local_router.py", line 486, in process
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(DvrLocalRouter, self).process(agent)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_router_base.py", line 30, in process
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(DvrRouterBase, self).process(agent)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/ha_router.py", line 386, in process
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(HaRouter, self).process(agent)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/common/utils.py", line 377, in call
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self.logger(e)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self.force_reraise()
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     six.reraise(self.type_, self.value, self.tb)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/common/utils.py", line 374, in call
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     return func(*args, **kwargs)
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/router_info.py", line 963, in process
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self.process_address_scope()
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_edge_router.py", line 235, in process_address_scope
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     with snat_iptables_manager.defer_apply():
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent AttributeError: 'NoneType' object has no attribute 'defer_apply'
2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent 

This happens in upstream master.

** Affects: neutron
     Importance: Undecided
         Status: New


** Tags: l3-bgp l3-dvr-backlog

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https://bugs.launchpad.net/bugs/1560945

Title:
  Unable to create DVR+HA routers

Status in neutron:
  New

Bug description:
  When creating a new DVR+HA, the router is created (the API returns
  successfully) but the l3 agent enters an endless loop:

  2016-03-23 13:57:37.340 ERROR neutron.agent.l3.agent [-] Failed to process compatible router 'a04b3fd7-d46c-4520-82af-18d16835469d'
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent Traceback (most recent call last):
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/agent.py", line 497, in _process_router_update
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self._process_router_if_compatible(router)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/agent.py", line 436, in _process_router_if_compatible
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self._process_updated_router(router)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/agent.py", line 450, in _process_updated_router
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     ri.process(self)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_edge_ha_router.py", line 92, in process
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(DvrEdgeHaRouter, self).process(agent)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_local_router.py", line 486, in process
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(DvrLocalRouter, self).process(agent)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_router_base.py", line 30, in process
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(DvrRouterBase, self).process(agent)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/ha_router.py", line 386, in process
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     super(HaRouter, self).process(agent)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/common/utils.py", line 377, in call
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self.logger(e)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self.force_reraise()
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     six.reraise(self.type_, self.value, self.tb)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/common/utils.py", line 374, in call
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     return func(*args, **kwargs)
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/router_info.py", line 963, in process
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     self.process_address_scope()
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent   File "/opt/openstack/neutron/neutron/agent/l3/dvr_edge_router.py", line 235, in process_address_scope
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent     with snat_iptables_manager.defer_apply():
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent AttributeError: 'NoneType' object has no attribute 'defer_apply'
  2016-03-23 13:57:37.340 TRACE neutron.agent.l3.agent 

  This happens in upstream master.

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Follow ups

[Bug 1560945] Re: Unable to create DVR+HA routers
From: OpenStack Infra, 2016-03-23