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[Slawek Kaplonski <1896735@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

It happens mostly when scenario job is run on Ubuntu Focal and it seems
that we have race between spawning guest vm and checking it's hostname
during the tests.

See example of error:

Traceback (most recent call last):
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/neutron_tempest_plugin/scenario/test_port_forwardings.py", line 136, in test_port_forwarding_editing_and_deleting_tcp_rule
    self.check_servers_hostnames(server)
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/neutron_tempest_plugin/scenario/base.py", line 473, in check_servers_hostnames
    ssh_client.exec_command('hostname'))
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 329, in wrapped_f
    return self.call(f, *args, **kw)
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 409, in call
    do = self.iter(retry_state=retry_state)
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 356, in iter
    return fut.result()
  File "/usr/lib/python3.8/concurrent/futures/_base.py", line 432, in result
    return self.__get_result()
  File "/usr/lib/python3.8/concurrent/futures/_base.py", line 388, in __get_result
    raise self._exception
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 412, in call
    result = fn(*args, **kwargs)
  File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/neutron_tempest_plugin/common/ssh.py", line 178, in exec_command
    return super(Client, self).exec_command(cmd=cmd, encoding=encoding)
  File "/opt/stack/tempest/tempest/lib/common/ssh.py", line 158, in exec_command
    ssh = self._get_ssh_connection()
  File "/opt/stack/tempest/tempest/lib/common/ssh.py", line 126, in _get_ssh_connection
    raise exceptions.SSHTimeout(host=self.host,
tempest.lib.exceptions.SSHTimeout: Connection to the 172.24.5.12 via SSH timed out.
User: cirros, Password: None

** Affects: neutron
     Importance: High
     Assignee: Slawek Kaplonski (slaweq)
         Status: Confirmed


** Tags: gate-failure

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https://bugs.launchpad.net/bugs/1896735

Title:
  Scenario tests from
  neutron_tempest_plugin.scenario.test_port_forwardings.PortForwardingTestJSON
  failing due to ssh failure

Status in neutron:
  Confirmed

Bug description:
  It happens mostly when scenario job is run on Ubuntu Focal and it
  seems that we have race between spawning guest vm and checking it's
  hostname during the tests.

  See example of error:

  Traceback (most recent call last):
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/neutron_tempest_plugin/scenario/test_port_forwardings.py", line 136, in test_port_forwarding_editing_and_deleting_tcp_rule
      self.check_servers_hostnames(server)
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/neutron_tempest_plugin/scenario/base.py", line 473, in check_servers_hostnames
      ssh_client.exec_command('hostname'))
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 329, in wrapped_f
      return self.call(f, *args, **kw)
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 409, in call
      do = self.iter(retry_state=retry_state)
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 356, in iter
      return fut.result()
    File "/usr/lib/python3.8/concurrent/futures/_base.py", line 432, in result
      return self.__get_result()
    File "/usr/lib/python3.8/concurrent/futures/_base.py", line 388, in __get_result
      raise self._exception
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/tenacity/__init__.py", line 412, in call
      result = fn(*args, **kwargs)
    File "/opt/stack/tempest/.tox/tempest/lib/python3.8/site-packages/neutron_tempest_plugin/common/ssh.py", line 178, in exec_command
      return super(Client, self).exec_command(cmd=cmd, encoding=encoding)
    File "/opt/stack/tempest/tempest/lib/common/ssh.py", line 158, in exec_command
      ssh = self._get_ssh_connection()
    File "/opt/stack/tempest/tempest/lib/common/ssh.py", line 126, in _get_ssh_connection
      raise exceptions.SSHTimeout(host=self.host,
  tempest.lib.exceptions.SSHTimeout: Connection to the 172.24.5.12 via SSH timed out.
  User: cirros, Password: None

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