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[Rodolfo Alonso <1860586@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1860586

Title:
  [Tempest] SSH exception "No existing session"

Status in neutron:
  Fix Released

Bug description:
  Seen in several CI jobs:
  https://storage.gra.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_820/611605/22/gate/neutron-tempest-plugin-scenario-linuxbridge/82023b2/testr_results.html
  https://storage.bhs.cloud.ovh.net/v1/AUTH_dcaab5e32b234d56b626f72581e3644c/zuul_opendev_logs_ca7/653883/11/check/neutron-tempest-plugin-scenario-linuxbridge/ca7d140/testr_results.html

  Error [1]:
  2020-01-21 00:35:15,421 31613 INFO     [tempest.lib.common.ssh] Creating ssh connection to '172.24.5.164:22' as 'cirros' with public key authentication
  2020-01-21 00:35:15,462 31613 INFO     [paramiko.transport] Connected (version 2.0, client dropbear_2012.55)
  2020-01-21 00:35:17,402 31613 INFO     [paramiko.transport] Authentication (publickey) successful!
  2020-01-21 00:35:17,402 31613 INFO     [tempest.lib.common.ssh] ssh connection to cirros@172.24.5.164 successfully created
  2020-01-21 00:35:17,855 31613 INFO     [tempest.lib.common.ssh] Creating ssh connection to '172.24.5.164:22' as 'cirros' with public key authentication
  2020-01-21 00:35:17,890 31613 INFO     [paramiko.transport] Connected (version 2.0, client dropbear_2012.55)
  2020-01-21 00:35:19,780 31613 INFO     [paramiko.transport] Authentication (publickey) successful!
  2020-01-21 00:35:19,780 31613 INFO     [tempest.lib.common.ssh] ssh connection to cirros@172.24.5.164 successfully created
  2020-01-21 00:35:19,856 31613 INFO     [tempest.lib.common.ssh] Creating ssh connection to '172.24.5.164:22' as 'cirros' with public key authentication
  2020-01-21 00:35:19,865 31613 INFO     [paramiko.transport] Connected (version 2.0, client dropbear_2012.55)
  2020-01-21 00:35:29,878 31613 ERROR    [tempest.lib.common.ssh] Failed to establish authenticated ssh connection to cirros@172.24.5.164 after 0 attempts
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh Traceback (most recent call last):
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh   File "/opt/stack/tempest/tempest/lib/common/ssh.py", line 107, in _get_ssh_connection
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh     sock=proxy_chan)
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh   File "/opt/stack/tempest/.tox/tempest/lib/python3.6/site-packages/paramiko/client.py", line 412, in connect
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh     server_key = t.get_remote_server_key()
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh   File "/opt/stack/tempest/.tox/tempest/lib/python3.6/site-packages/paramiko/transport.py", line 834, in get_remote_server_key
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh     raise SSHException("No existing session")
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh paramiko.ssh_exception.SSHException: No existing session
  2020-01-21 00:35:29.878 31613 ERROR tempest.lib.common.ssh 

  
  [1] http://paste.openstack.org/show/788688/

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