This bug was fixed in the package cloud-init -

cloud-init (17.2-34-g644048e3-0ubuntu1) bionic; urgency=medium

  * New upstream snapshot.
    - EC2: Fix get_instance_id called against cached datasource pickle.
      [Chad Smith] (LP: #1748354)
    - cli: fix cloud-init status to report running when before result.json
      [Chad Smith] (LP: #1747965)
    - net: accept network-config in netplan format for renaming interfaces
      [Ryan Harper] (LP: #1709715)
    - Fix ssh keys validation in ssh_util [Tatiana Kholkina]

 -- Scott Moser <>  Fri, 09 Feb 2018 17:04:03 -0500

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

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  ec2: systemctl restart cloud-init after upgrade 17.1.46 -> 17.2.30

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

Bug description:
  During proposed SRU testing, I discovered an upgrade issue for EC2
  customers who don't reboot their instances after cloud-init upgrade
  and instead issue the commandline 'systemctl restart cloud-init'.

  The following traceback is caused by the new instance document changes added 
in rev

  What this changeset didn't account for is our pickled
  ec2localdatasource from earlier get_data runs, not persisting an
  Ec2LocalDatasouce.identity attribute so subsequent get_instance_id
  calls wouldn't see this attribute on the class yet.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: cloud-init 17.2-30-gf7deaf15-0ubuntu1~16.04.1
  ProcVersionSignature: Ubuntu 4.4.0-1050.59-aws 4.4.98
  Uname: Linux 4.4.0-1050-aws x86_64
  ApportVersion: 2.20.1-0ubuntu2.15
  Architecture: amd64
  CloudName: Amazon - Ec2
  Date: Thu Feb  8 23:42:52 2018
  Ec2AMI: ami-c9a693ac
  Ec2AMIManifest: (unknown)
  Ec2AvailabilityZone: us-east-2b
  Ec2InstanceType: t2.micro
  Ec2Kernel: unavailable
  Ec2Ramdisk: unavailable
  PackageArchitecture: all
   PATH=(custom, no user)
  SourcePackage: cloud-init
  UpgradeStatus: No upgrade log present (probably fresh install)
   2018-02-08 23:35:05,664 -[DEBUG]: strict_mode: warn, 
   2018-02-08 23:39:12,559 -[WARNING]: failed stage init
   AttributeError: 'DataSourceEc2Local' object has no attribute 'identity'
   2018-02-08 23:42:09,995 -[WARNING]: failed stage init
   AttributeError: 'DataSourceEc2Local' object has no attribute 'identity'

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