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[Anastasia <anastasia.macmood@xxxxxxxxxxxxx>]

** Changed in: juju
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1798117

Title:
  juju sends "network" top level key to user.network-config in lxd
  containers

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

Bug description:
  == Short summary ==
  In lxd containers launched by juju, 
  /var/lib/cloud/seed/nocloud-net/network-config has:
   has:
   network:
     config: disabled

  That is invalid content.  Cloud-init assumes content in 'network-config'
  is already namespaced to 'network'.  The correct content would be:

    config: disabled

  == Easy recreate ==
  $ lxc launch ubuntu-daily:bionic \
     "--config=user.network-config={'network': {'config': {'disabled'}}}"

  == Longer Info ==
  When looking at bug 1651497, I see containers that run cloud-init
  have errors in a container's cloud-init log 
  (http://paste.ubuntu.com/p/5mKXC8pMwH/) like:
    AttributeError: 'NoneType' object has no attribute 'iter_interfaces'
  and
    Failed to rename devices: Failed to apply network config names. Found bad network config version: None

  After some looking guessing I realized that juju must be attempting to
  disable cloud-init's network configuration via sending the following
  into the nocloud seed (/var/lib/cloud/seed/nocloud-net/network-config)
  via 'user.network-config'.

  cloud-init can clearly handle this better, but juju should not be
  sending invalid configuration.

  
  Related bugs:
   * bug 1651497: iscsid.service fails to start in container, results in failed dist-upgrade later on

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: cloud-init 18.3-9-g2e62cb8a-0ubuntu1~18.04.2
  ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7
  Uname: Linux 4.18.0-8-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  CloudName: NoCloud
  Date: Tue Oct 16 14:33:12 2018
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=C.UTF-8
  SourcePackage: cloud-init
  UpgradeStatus: No upgrade log present (probably fresh install)
  cloud-init-log-warnings:
   2018-10-16 14:32:01,706 - stages.py[WARNING]: Failed to rename devices: Failed to apply network config names. Found bad network config version: None
   2018-10-16 14:32:01,707 - util.py[WARNING]: failed stage init-local
   AttributeError: 'NoneType' object has no attribute 'version'
   2018-10-16 14:32:02,366 - stages.py[WARNING]: Failed to rename devices: Failed to apply network config names. Found bad network config version: None
  user_data.txt:
   #cloud-config
   {}

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