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[Launchpad Bug Tracker <1673411@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package cloud-init - 0.7.9-90-g61eb03fe-
0ubuntu1~16.04.1

---------------
cloud-init (0.7.9-90-g61eb03fe-0ubuntu1~16.04.1) xenial-proposed; urgency=medium

  * debian/cloud-init.templates: add Bigstep to list of sources. (LP: #1676460)
  * New upstream snapshot.
    - OpenStack: add 'dvs' to the list of physical link types. (LP: #1674946)
    - Fix bug that resulted in an attempt to rename bonds or vlans.
      (LP: #1669860)
    - tests: update OpenNebula and Digital Ocean to not rely on host
      interfaces.
    - net: in netplan renderer delete known image-builtin content.
      (LP: #1675576)
    - doc: correct grammar in capabilities.rst [David Tagatac]
    - ds-identify: fix detecting of maas datasource. (LP: #1677710)
    - netplan: remove debugging prints, add debug logging [Ryan Harper]
    - ds-identify: do not write None twice to datasource_list.
    - support resizing partition and rootfs on system booted without
      initramfs.  [Steve Langasek] (LP: #1677376)
    - apt_configure: run only when needed. (LP: #1675185)
    - OpenStack: identify OpenStack by product 'OpenStack Compute'.
      (LP: #1675349)
    - GCE: Search GCE in ds-identify, consider serial number in check.
      (LP: #1674861)
    - Add support for setting hashed passwords [Tore S. Lonoy] (LP: #1570325)
    - Fix filesystem creation when using "partition: auto"
      [Jonathan Ballet] (LP: #1634678)
    - ConfigDrive: support reading config drive data from /config-drive.
      (LP: #1673411)
    - ds-identify: fix detection of Bigstep datasource. (LP: #1674766)
    - test: add running of pylint [Joshua Powers]
    - ds-identify: fix bug where filename expansion was left on.
    - advertise network config v2 support (NETWORK_CONFIG_V2) in features.
    - Bigstep: fix bug when executing in python3. [root]
    - Fix unit test when running in a system deployed with cloud-init.
    - Bounce network interface for Azure when using the built-in path.
      [Brent Baude] (LP: #1674685)
    - cloudinit.net: add network config v2 parsing and rendering [Ryan Harper]
    - net: Fix incorrect call to isfile [Joshua Powers] (LP: #1674317)
    - net: add renderers for automatically selecting the renderer.
    - doc: fix config drive doc with regard to unpartitioned disks.
      (LP: #1673818)
    - test: Adding integratiron test for password as list [Joshua Powers]
    - render_network_state: switch arguments around, do not require target
    - support 'loopback' as a device type.
    - Integration Testing: improve testcase subclassing [Wesley Wiedenmeier]
    - gitignore: adding doc/rtd_html [Joshua Powers]
    - doc: add instructions for running integration tests via tox.
      [Joshua Powers]
    - test: avoid differences in 'date' output due to daylight savings.
    - Fix chef config module in omnibus install. [Jeremy Melvin] (LP: #1583837)
    - Add feature flags to cloudinit.version. [Wesley Wiedenmeier]
    - tox: add a citest environment
    - Support chpasswd/list being a list in addition to a string.
      [Sergio Lystopad] (LP: #1665694)
    - doc: Fix configuration example for cc_set_passwords module.
      [Sergio Lystopad] (LP: #1665773)
    - net: support both ipv4 and ipv6 gateways in sysconfig.
      [Lars Kellogg-Stedman] (LP: #1669504)
    - net: do not raise exception for > 3 nameservers
      [Lars Kellogg-Stedman] (LP: #1670052)

 -- Scott Moser <smoser@xxxxxxxxxx>  Mon, 03 Apr 2017 11:52:56 -0400

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

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https://bugs.launchpad.net/bugs/1673411

Title:
  config-drive support is broken

Status in Ubuntu Cloud Archive:
  Triaged
Status in Ubuntu Cloud Archive newton series:
  Triaged
Status in Ubuntu Cloud Archive ocata series:
  Triaged
Status in cloud-init:
  Fix Committed
Status in nova-lxd:
  Fix Released
Status in nova-lxd newton series:
  Fix Committed
Status in nova-lxd ocata series:
  Fix Committed
Status in nova-lxd trunk series:
  Fix Released
Status in cloud-init package in Ubuntu:
  Fix Released
Status in nova-lxd package in Ubuntu:
  Fix Committed
Status in cloud-init source package in Xenial:
  Fix Released
Status in nova-lxd source package in Xenial:
  Invalid
Status in cloud-init source package in Yakkety:
  Fix Released
Status in nova-lxd source package in Yakkety:
  Triaged
Status in cloud-init source package in Zesty:
  Fix Released
Status in nova-lxd source package in Zesty:
  Fix Committed

Bug description:
  === Begin cloud-init SRU Template ===
  [Impact]
  nova-lxd can provide data to instances in 2 ways:
   a.) metadata service
   b.) config drive

  The support for reading the config drive in cloud-init was never
  functional.  Nova-lxd has changed the way they're presenting the config
  drive to the guest.  Now they are doing so by populating a directory in
  the container /config-drive with the information.
  The change added to cloud-init was to extend support read config drive
  information from that directory.

  [Test Case]
  With a nova-lxd that contains the fix this can be fully tested
  by launching an instance with updated cloud-init and config drive
  attached.

  For cloud-init, the easiest way to demonstrate this is to
  create a lxc container and populate it with a '/config-drive'.

  lxc-proposed-snapshot is
    https://git.launchpad.net/~smoser/cloud-init/+git/sru-info/tree/bin/lxc-proposed-snapshot
  It publishes an image to lxd with proposed enabled and cloud-init upgraded.

  $ release=xenial
  $ ref=xenial-proposed
  $ name=$release-lp1673411
  $ lxc-proposed-snapshot --proposed --publish $release $ref
  $ lxc init $ref $name

  # lxc will create the 'NoCloud' seed, and the normal search
  # path looks there first, so remove it.

  $ lxc file pull $name/etc/cloud/cloud.cfg.d/90_dpkg.cfg - |
      sed 's/NoCloud, //' |
      lxc file push - $name/etc/cloud/cloud.cfg.d/90_dpkg.cfg

  ## populate a /config-drive with attached 'make-config-drive-dir'
  ## and push it to the container

  $ d=$(mktemp -d)
  $ make-config-drive-dir "$d" "$name"
  $ rm -Rf "$d"

  ## start it and look around
  $ lxc start $name
  $ sleep 10
  $ lxc exec $name cat /run/cloud-init/result.json
  {
   "v1": {
    "datasource": "DataSourceConfigDrive [net,ver=2][source=/config-drive]",
    "errors": []
   }
  }

  [Regression Potential]
  There is a potentiali false positive where a user had data in
  /config-drive and now that information is read as config drive data.

  That would require a directory tree like:
    /config-drive/openstack/2???-??-??/meta_data.json
  or
    /config-drive/openstack/latest/meta_data.json

  Which seems like a small likelyhood of non-contrived hit.

  [Other Info]
  Upstream commit:
   https://git.launchpad.net/cloud-init/commit/?id=443095f4d4b6fe

  === End cloud-init SRU Template ===

  After reviewing https://review.openstack.org/#/c/445579/ and doing
  some testing, it would appear that the config-drive support in the
  nova-lxd driver is not functional.

  cloud-init ignores the data presented in /var/lib/cloud/data and reads
  from the network accessible metadata-service.

  To test this effectively you have to have a fully offline instance
  (i.e. no metadata service access).

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