[Yahoo-eng-team] [Bug 1560945] [NEW] Unable to create DVR+HA routers

John Schwarz Wed, 23 Mar 2016 05:06:13 -0700

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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[Yahoo-eng-team] [Bug 1560945] [NEW] Unable to create DVR+HA routers

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