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[Slawek Kaplonski <1919344@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Failing test:
neutron.tests.functional.agent.test_dhcp_agent.DHCPAgentOVSTestCase.test_enable_isolated_metadata_for_subnet_create_delete
-  problem spawning metadata proxy,

Examples of failure:
    https://b5d154aeef4479021ab9-b7d34d92d3c0fa84052da2d7ba8871be.ssl.cf1.rackcdn.com/777535/1/check/neutron-functional-with-uwsgi/bb88e2f/testr_results.html

https://175b7ab9447c4ad3cb55-7660c6eb3fc520d2639a30e0db226704.ssl.cf2.rackcdn.com/765846/7/gate
/neutron-functional-with-uwsgi/0099700/testr_results.html

https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_334/773283/15/check
/neutron-functional-with-uwsgi/334549a/testr_results.html


Traceback:
ft1.1: neutron.tests.functional.agent.test_dhcp_agent.DHCPAgentOVSTestCase.test_enable_isolated_metadata_for_subnet_create_deletetesttools.testresult.real._StringException: Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 704, in wait_until_true
    eventlet.sleep(sleep)
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.8/site-packages/eventlet/greenthread.py", line 36, in sleep
    hub.switch()
  File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.8/site-packages/eventlet/hubs/hub.py", line 313, in switch
    return self.greenlet.switch()
eventlet.timeout.Timeout: 5 seconds

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 182, in func
    return f(self, *args, **kwargs)
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/agent/test_dhcp_agent.py", line 392, in test_enable_isolated_metadata_for_subnet_create_delete
    self._test_metadata_proxy_spawn_kill_with_subnet_create_delete()
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/agent/test_dhcp_agent.py", line 374, in _test_metadata_proxy_spawn_kill_with_subnet_create_delete
    common_utils.wait_until_true(
  File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 708, in wait_until_true
    raise exception
RuntimeError: Metadata proxy didn't spawn

** Affects: neutron
     Importance: Critical
         Status: Confirmed


** Tags: functional-tests gate-failure

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https://bugs.launchpad.net/bugs/1919344

Title:
  Functional tests failing due to timeout while spawning metadata proxy

Status in neutron:
  Confirmed

Bug description:
  Failing test:
  neutron.tests.functional.agent.test_dhcp_agent.DHCPAgentOVSTestCase.test_enable_isolated_metadata_for_subnet_create_delete
  -  problem spawning metadata proxy,

  Examples of failure:
      https://b5d154aeef4479021ab9-b7d34d92d3c0fa84052da2d7ba8871be.ssl.cf1.rackcdn.com/777535/1/check/neutron-functional-with-uwsgi/bb88e2f/testr_results.html

  https://175b7ab9447c4ad3cb55-7660c6eb3fc520d2639a30e0db226704.ssl.cf2.rackcdn.com/765846/7/gate
  /neutron-functional-with-uwsgi/0099700/testr_results.html

  https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_334/773283/15/check
  /neutron-functional-with-uwsgi/334549a/testr_results.html

  
  Traceback:
  ft1.1: neutron.tests.functional.agent.test_dhcp_agent.DHCPAgentOVSTestCase.test_enable_isolated_metadata_for_subnet_create_deletetesttools.testresult.real._StringException: Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 704, in wait_until_true
      eventlet.sleep(sleep)
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.8/site-packages/eventlet/greenthread.py", line 36, in sleep
      hub.switch()
    File "/home/zuul/src/opendev.org/openstack/neutron/.tox/dsvm-functional/lib/python3.8/site-packages/eventlet/hubs/hub.py", line 313, in switch
      return self.greenlet.switch()
  eventlet.timeout.Timeout: 5 seconds

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/base.py", line 182, in func
      return f(self, *args, **kwargs)
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/agent/test_dhcp_agent.py", line 392, in test_enable_isolated_metadata_for_subnet_create_delete
      self._test_metadata_proxy_spawn_kill_with_subnet_create_delete()
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/tests/functional/agent/test_dhcp_agent.py", line 374, in _test_metadata_proxy_spawn_kill_with_subnet_create_delete
      common_utils.wait_until_true(
    File "/home/zuul/src/opendev.org/openstack/neutron/neutron/common/utils.py", line 708, in wait_until_true
      raise exception
  RuntimeError: Metadata proxy didn't spawn

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