group.of.nepali.translators team mailing list archive

[James Page <james.page@xxxxxxxxxx>]

I think the proposed patch is OK - the package actually directly
installs a defaults file anyway so we can probably go further by
removing the processing of the template in the postinst script.

** Also affects: cloud-archive/newton
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/pike
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/mitaka
   Importance: Undecided
       Status: New

** Also affects: cloud-archive/ocata
   Importance: Undecided
       Status: New

** Changed in: cloud-archive/mitaka
   Importance: Undecided => High

** Changed in: cloud-archive/mitaka
       Status: New => Triaged

** Changed in: cloud-archive/newton
   Importance: Undecided => High

** Changed in: cloud-archive/newton
       Status: New => Triaged

** Changed in: cloud-archive/ocata
   Importance: Undecided => High

** Changed in: cloud-archive/ocata
       Status: New => Triaged

** Changed in: cloud-archive/pike
   Importance: Undecided => High

** Changed in: cloud-archive/pike
       Status: New => Triaged

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Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1723480

Title:
  openvswitch-switch package postinst modifies existing configuration

Status in OpenStack neutron-openvswitch charm:
  Invalid
Status in Ubuntu Cloud Archive:
  Triaged
Status in Ubuntu Cloud Archive mitaka series:
  Triaged
Status in Ubuntu Cloud Archive newton series:
  Triaged
Status in Ubuntu Cloud Archive ocata series:
  Triaged
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in openvswitch:
  Invalid
Status in openvswitch package in Ubuntu:
  Triaged
Status in openvswitch source package in Xenial:
  Triaged
Status in openvswitch source package in Zesty:
  Triaged
Status in openvswitch source package in Artful:
  Triaged

Bug description:
  Similar to, but slightly different from bug 1712444, we have found the
  upgrade of the openvswitch-switch package by unattended-upgrade (or
  otherwise) will trigger the service restart of openvswitch-switch
  within the neutron-openvswitch charm if the config-changed hook is
  called.

  While this is a reasonable behavior based on an assumption that if the
  /etc/default/openvswitch-switch file changes due to upgrade and the
  charm resets it to the charm-configured version of the file, we should
  want to restart the service to be on the latest code.  However, the
  restart of the service causes between 6-12 seconds of network outage
  for the tenant VMs utilizing OVS.

  Would it be possible to have a config-flag to disable the charm's
  ability to restart the openvswitch-switch service outside of the
  install hook to avoid automated network outages due to package
  upgrades?

  Elsewise, is there a way to serialize the resulting restarts in such a
  way that only one member of the neutron-openvswitch
  application/service is restarting at a time along with a buffer to
  allow for high availability applications to failover and fail back and
  not be afflicted by multiple nodes' switches being restarted
  simultaneously.

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