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[Scott Moser <smoser@xxxxxxxxxx>]

** Also affects: cloud-init (Ubuntu)
   Importance: Undecided
       Status: New

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

** Changed in: cloud-init (Ubuntu)
   Importance: Undecided => Medium

** Also affects: cloud-init (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

** Also affects: cloud-init (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: cloud-init (Ubuntu Xenial)
       Status: New => Confirmed

** Changed in: cloud-init (Ubuntu Yakkety)
       Status: New => Confirmed

** Changed in: cloud-init (Ubuntu Xenial)
   Importance: Undecided => Medium

** Changed in: cloud-init (Ubuntu Yakkety)
   Importance: Undecided => Medium

-- 
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Engineering Team, which is subscribed to cloud-init.
https://bugs.launchpad.net/bugs/1660385

Title:
  Alert user of Ec2 Datasource on lookalike cloud

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

Bug description:
  Many cloud providers mimic the EC2 Metadata service [1] in order to
  provide a level of EC2 compatibility for images.  This is quite useful and
  allows image portability.

  Because this is a network based metadata service, cloud-init
  opportunistically poll an IPv4 link local address (http://169.254.169.254)
  to determine if there is metadata available.  That can have negative side
  affects such as timeouts.

  AWS has recently begun providing a way for instances to determine if they
  are running on EC2 [2].

  Cloud-init will change its behavior to attempt to find the EC2 metadata
  service only if it has determined itself to be running on EC2 or another
  known cloud provider which provides an EC2 metadata service.

  For more information, please see:
    https://lists.ubuntu.com/archives/ubuntu-devel/2017-February/039697.html

  
  --
  [1] http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html
  [2] http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/identify_ec2_instances.html

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