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[OpenStack Infra <1923453@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/786272
Committed: https://opendev.org/openstack/neutron/commit/1dfbf5b3455391c849dc5ab7b61df86f6e0c8c16
Submitter: "Zuul (22348)"
Branch:    master

commit 1dfbf5b3455391c849dc5ab7b61df86f6e0c8c16
Author: Corey Bryant <corey.bryant@xxxxxxxxxxxxx>
Date:   Wed Apr 14 11:45:47 2021 -0400

    Initialize privsep library for neutron-ovs-cleanup
    
    Closes-Bug: #1923453
    Change-Id: Ie91ab1c359955a2911e558ab5a4bc8b0ff28bada


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

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https://bugs.launchpad.net/bugs/1923453

Title:
  [focal-wallaby] Services not running that should be: neutron-
  openvswitch-agent

Status in OpenStack neutron-gateway charm:
  Invalid
Status in OpenStack neutron-openvswitch charm:
  Invalid
Status in neutron:
  Fix Released
Status in neutron package in Ubuntu:
  Fix Released

Bug description:
  When deploying focal-wallaby, the neutron-openvswitch-agent service
  doesn't start because one of its dependency services refuses to start:

  systemd[1]: Starting OpenStack Neutron OVS cleanup...
  sudo[190474]: pam_unix(sudo:auth): Couldn't open /etc/securetty: No such file or directory
  sudo[190474]: pam_unix(sudo:auth): conversation failed
  sudo[190474]: pam_unix(sudo:auth): auth could not identify password for [neutron]
  sudo[190474]:  neutron : command not allowed ; TTY=unknown ; PWD=/var/lib/neutron ; USER=root ; COMMAND=/usr/bin/privsep-helper --config-file /etc/neutron/neutron.conf --privsep_context neutron.privileged.>
  systemd[1]: neutron-ovs-cleanup.service: Main process exited, code=exited, status=1/FAILURE
  systemd[1]: neutron-ovs-cleanup.service: Failed with result 'exit-code'.
  systemd[1]: Failed to start OpenStack Neutron OVS cleanup.

  Indeed /etc/securetty got removed in focal [0][1]. Maybe Neutron just
  started doing something in Wallaby that requires this file?

  This is visible in our OSCI test gate. [2][3]

  [0] https://bugs.launchpad.net/ubuntu/+source/pam/+bug/1860826
  [1] https://askubuntu.com/questions/1239503/ubuntu-20-04-and-20-10-etc-securetty-no-such-file-or-directory
  [2] https://review.opendev.org/c/openstack/charm-neutron-openvswitch/+/778932
  [3] https://openstack-ci-reports.ubuntu.com/artifacts/1a8/778932/5/check/migrate-ovn-focal-wallaby-dvr-snat/1a84d92/log/juju-status.zaza-3b6febd0f883.txt

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