[Bug 1124384] Re: reload-configuration can confuse upstart

[Scott Moser]

just a bit more info, the cloud-config content above results in writing /etc/init/part-002.conf a an upstart job.
The debug logs shown here had that file in place (from a previous boot), and cloud-init overwriting it, then calling (or not calling) reload-configuration.

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https://bugs.launchpad.net/bugs/1124384

Title:
  reload-configuration can confuse upstart

Status in “cloud-init” package in Ubuntu:
  Confirmed
Status in “upstart” package in Ubuntu:
  Confirmed

Bug description:
  Under bug 1080841 we made cloud-init invoke 'initctl reload-
  configuration' after it wrote a upstart job.  This was necessary
  because inotify is not supported on all filesystems (overlayfs being
  the one of most current interst).

  This seems to be causing upstart some pain, and resulting in cloud-
  final (and 'rc') not being run.

  Easy user-data to reproduce the problem is:

  #cloud-config-archive
  - content: |
     #!/bin/sh
     echo "==== $(date -R): user-script run ===" | tee /run/user-script.log
  - content: |
     #upstart-job
     description "a test upstart job"
     start on stopped rc RUNLEVEL=[2345]
     console output
     task
     script
     echo "==== $(date -R): upstart job run ===" | tee /run/upstart-job.log
     end script

  You should (and do on quantal) end up with 2 files written to /run.

  I've verified that the same behavior is true on quantal.  If you
  change cloud-init to notify upstart about a job immediately after it
  writes it, then quantal's upstart gets confused also.

  Related bugs:
   * bug 1080841: should reload configuration if an upstart job is added 
   * bug 1103881: cloud-final is never executed if upstart is upgraded during initialization of the image

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