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[Launchpad Bug Tracker <1693939@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package cloud-init - 0.7.9-153-g16a7302f-
0ubuntu1~16.04.2

---------------
cloud-init (0.7.9-153-g16a7302f-0ubuntu1~16.04.2) xenial-proposed; urgency=medium

  * debian/patches/ds-identify-behavior-xenial.patch: refresh patch.
  * cherry-pick 5fb49bac: azure: identify platform by well known value
    in chassis asset (LP: #1693939)
  * cherry-pick 003c6678: net: remove systemd link file writing from eni
    renderer
  * cherry-pick 1cd4323b: azure: remove accidental duplicate line in
    merge.
  * cherry-pick ebc9ecbc: Azure: Add network-config, Refactor net layer
    to handle duplicate macs. (LP: #1690430)
  * cherry-pick 11121fe4: systemd: make cloud-final.service run before
    apt daily (LP: #1693361)

 -- Scott Moser <smoser@xxxxxxxxxx>  Wed, 28 Jun 2017 17:17:18 -0400

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

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https://bugs.launchpad.net/bugs/1693939

Title:
  Switch Azure detection to use chassis_asset_tag

Status in cloud-init:
  Confirmed
Status in cloud-init package in Ubuntu:
  Fix Released
Status in cloud-init source package in Xenial:
  Fix Released
Status in cloud-init source package in Yakkety:
  Fix Committed
Status in cloud-init source package in Zesty:
  Fix Committed

Bug description:
  === Begin SRU Template ===
  [Impact]
  Azure identifies itself to guests by setting a well known value in the chassis asset field of dmi data.  This is done both in Azure public cloud and in Azure Stack (the on-premise variant of Azure).

  By checking for this value cloud-init can more quickly identify
  whether or not it is running on Azure.

  [Test Case]
   - Launch an instance, enable proposed, upgrade.
   - Clean instance and re-boot
     $ rm -Rf /var/lib/cloud /var/log/cloud-init*
     $ rm -f /etc/cloud/cloud.cfg.d/91_walinuxagent.cfg  # bug 1700769
     $ reboot

   - ssh back in look around
     - confirm 'WARN' does not appear in /var/log/cloud-init*
     - look in /run/cloud-init/ds-identify.log.  It should say:
        Found single datasource: Azure

   - reboot, ssh back in and verify all still good.

  [Regression Potential]
  Instances running in Azure or Azure Stack that did *not* have this value
  would not be identified as Azure.  We have been told by representatives
  from Microsoft that that will not be the case.

  [Other Info]
  Upstream commit at
    https://git.launchpad.net/cloud-init/commit/?id=5fb49bac

  === End SRU Template ===

  I've got confirmation that the chassis_asset_tag DMI value is a hard-
  coded identifier for the Azure platform (both Azure and Azure Stack
  (the on-premise variant of Azure)).

  $ cat /sys/class/dmi/id/chassis_asset_tag
  7783-7084-3265-9085-8269-3286-77

  The detection logic in both ds-identify and Azure ds should be updated
  to use this value.

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