[Bug 1427999] Re: purging cloud-init from user-data commands does not work under systemd

[Joshua Powers]

This appears to be fixed so marked fix released.

I took pitti's steps to reproduce in #1 and used a xenial image. There
was no hang or unexplained error messages.

** Changed in: cloud-init (Ubuntu)
       Status: New => Fix Released

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Title:
  purging cloud-init from user-data commands does not work under systemd

Status in autopkgtest package in Ubuntu:
  Fix Released
Status in cloud-init package in Ubuntu:
  Fix Released

Bug description:
  Apparently yesterday the cloud images at http://cloud-
  images.ubuntu.com/vivid/ were switched to boot with systemd, with
  init=/lib/systemd/systemd . 20150303/ still worked (with upstart),
  20150304/ hangs:

  [   15.009125] cloud-init[541]: Cloud-init v. 0.7.7 running 'init-local' at Wed, 04 Mar 2015 07:31:54 +0000. Up 13.71 seconds.
  [  OK  ] Started Initial cloud-init job (pre-networking).
           Starting Initial cloud-init job (metadata service crawler)...
  [   15.471963] cloud-init[747]: Cloud-init v. 0.7.7 running 'init' cron.service
  [...]
  [   15.824259] cloud-init[781]: Cloud-init v. 0.7.7 running 'modules:config' at Wed, 04 Mar 2015 07:31:56 +0000. Up 15.73 seconds.
  [   15.824463] cloud-init[781]: 2015-03-04 07:31:56,991 - cc_emit_upstart.py[WARNING]: Emission of upstart event cloud-config failed due to: Unexpected error while running command.
  [   15.824589] cloud-init[781]: Command: ['initctl', 'emit', 'cloud-config', 'CLOUD_CFG=/var/lib/cloud/instance/cloud-config.txt']
  [   15.824698] cloud-init[781]: Exit code: 1
  [   15.824802] cloud-init[781]: Reason: -
  [   15.824903] cloud-init[781]: Stdout: ''
  [   15.825003] cloud-init[781]: Stderr: 'initctl: Unable to connect to Upstart: Failed to connect to socket /com/ubuntu/upstart: Connection refused\n'
  [   16.003444] cloud-init[781]: Generating locales...
  [   16.036106] cloud-init[781]: en_US.UTF-8... up-to-date
  [   16.040818] cloud-init[781]: Generation complete.
           Stopping OpenBSD Secure Shell server...
  [  OK  ] Stopped OpenBSD Secure Shell server.
  [  OK  ] Sta

  and there it hangs. When trying to boot, it tries to talk to
  169.254.169.254 which times out.

  The initctl emit failure looks related, this obviously won't work
  under systemd. This probably needs to be replaced with some "systemctl
  start ..." equivalent? Note that you can test for systemd with [ -d
  /run/systemd/system ], that's the canonical test.

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