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[Launchpad Bug Tracker <1788716@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package rax-nova-agent -
2.1.15-0ubuntu1~18.04.1

---------------
rax-nova-agent (2.1.15-0ubuntu1~18.04.1) bionic; urgency=medium

  * Use DefaultDependencies=no to prevent forming service ordering cycles
    (LP: #1788716)

 -- Balint Reczey <rbalint@xxxxxxxxxx>  Fri, 24 Aug 2018 19:58:05 +0200

** Changed in: rax-nova-agent (Ubuntu Bionic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1788716

Title:
  rax-nova-agent causes a systemd ordering cycle on boot

Status in rax-nova-agent package in Ubuntu:
  Fix Released
Status in rax-nova-agent source package in Xenial:
  Fix Released
Status in rax-nova-agent source package in Bionic:
  Fix Released

Bug description:
  [Impact]

   * Booting a cloud instance first time in Rackspace's Cloud fails due to systemd breaking the service ordering cycle and not running cloud-init to provision the instance.
   * Without backporting the fix new instances can't boot.
   
  [Test Case]

   * Prepare an instance image with rax-nova-agent preinstalled and boot
  in Rackspace's network.

  [Regression Potential]

   * The fix may drop too many service dependencies resulting an image
  that does not boot.

  [Original Bug Text

  When booting an instance with it installed, I see the following in the
  log:

  Aug 23 20:37:29 ubuntu systemd[1]: nova-agent.service: Found ordering cycle on basic.target/start
  Aug 23 20:37:29 ubuntu systemd[1]: nova-agent.service: Found dependency on sockets.target/start
  Aug 23 20:37:29 ubuntu systemd[1]: nova-agent.service: Found dependency on uuidd.socket/start
  Aug 23 20:37:29 ubuntu systemd[1]: nova-agent.service: Found dependency on sysinit.target/start

  (I believe the source of the issue is https://github.com/Rackspace-DOT
  /nova-agent/commit/73d8ef1a6256ff05151603ff53bcb018bfdfcc9b, which
  changes the ordering with respect to cloud-init-local.service.)

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