[Bug 1569233] Re: changelogs.ubuntu.com/EOLReleaseAnnouncement missing, causes distro upgrade failure on EOL systems

[Launchpad Bug Tracker]

** Branch linked: lp:~ubuntu-core-dev/meta-release/ubuntu

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https://bugs.launchpad.net/bugs/1569233

Title:
  changelogs.ubuntu.com/EOLReleaseAnnouncement missing, causes distro
  upgrade failure on EOL systems

Status in ubuntu-release-upgrader package in Ubuntu:
  Fix Committed

Bug description:
  Update Manager will read http://changelogs.ubuntu.com/meta-release and
  sequentially try to access
  http://changelogs.ubuntu.com/EOLReleaseAnnouncement for ${release}+1's
  release notes, however the file on
  http://changelogs.ubuntu.com/EOLReleaseAnnouncement is missing and
  Update Manager will complain "Could not find the release notes - The
  server may be overloaded" error message and interrupt the entire
  upgrade process.

  While this bug does appears on EOL release, it's still valid as EOL
  Upgrade still needs to be working to upgrade to a supported release.

  ## Bug Reproduce Steps ##
  1. Grab & install an EOL'd Ubuntu release(e.g. Ubuntu 14.10)
  2. Switch software source to old-releases.ubuntu.com
  3. Update software source cache and fully upgrade the system
  4. Run Update Manager and hit the release upgrade button

  ## Workarounds ##
  Use `do-release-upgrade` command instead, which don't check the release note

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