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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1510399

Title:
  Error when metadata proxy is disabled for ha l3 agent

Status in neutron:
  Fix Released

Bug description:
  The configuration:

  /etc/neutron/neutron.conf
  [DEFAULT]
  ....
  l3_ha = True
  ....

  /etc/neutron/l3_agent.ini
  [DEFAULT]
  ....
  enable_metadata_proxy = False
  ....

  There was an error in l3_agent's log:

  2015-10-28 00:07:30.568 3198 ERROR neutron.agent.l3.agent [-] Failed to process compatible router '09a4d7a2-310c-488f-8687-18bc6eaa32e7
  '
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent Traceback (most recent call last):
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 465
  , in _process_router_update
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     self._process_router_if_compatible(router)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 410
  , in _process_router_if_compatible
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     self._process_added_router(router)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 415
  , in _process_added_router
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     self._router_added(router['id'], router)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/agent.py", line 316
  , in _router_added
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     ri.initialize(self.process_monitor)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/ha_router.py", line
   88, in initialize
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     self.update_initial_state(self.state_change_callback)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/ha_router.py", line
   335, in update_initial_state
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     callback(self.router_id, state)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/ha.py", line 125, i
  n enqueue_state_change
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     self._update_metadata_proxy(ri, router_id, state)
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent   File "/usr/lib/python2.7/dist-packages/neutron/agent/l3/ha.py", line 132, i
  n _update_metadata_proxy
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent     self.metadata_driver.spawn_monitored_metadata_proxy(
  2015-10-28 00:07:30.568 3198 TRACE neutron.agent.l3.agent AttributeError: 'L3NATAgentWithStateReport' object has no attribute 'metadata
  _driver' 

  I think maybe we need a check before this method :

  https://github.com/openstack/neutron/blob/master/neutron/agent/l3/ha.py#L126

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