[Bug 1982791] Re: An EoL release cannot dist-upgrade if not all updates are installed and the release has been archived to old-releases

[Chaim Eliyah]

I cannot presently think of another modern operating system that
requires you to hack at text files that you may or may not know about
just in order to upgrade the OS to the latest stable version. If user
action is required then the failure messages should indicate the action
to be taken.

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https://bugs.launchpad.net/bugs/1982791

Title:
  An EoL release cannot dist-upgrade if not all updates are installed
  and the release has been archived to old-releases

Status in ubuntu-release-upgrader package in Ubuntu:
  Triaged

Bug description:
  Noticed the automatic updates/upgrades are not coming in anymore.
  Seems Impish is EOL. Which is fine, we then run a release upgrade. But
  that is refused, since it requires latest versions/nicely upgraded.
  That is not possible as all Release Files are no longer available. So
  can not 'apt update', can not 'apt upgrade' hence can not 'do-release-
  upgrade'.

  From the error messages, started removing Repositories, but now the
  entire installation is broken. Re-install latest is only option. No
  fun.

  lsb_release  -rd
  Description:    Ubuntu 21.10
  Release:        21.10

  apt update
  Hit:1 http://ppa.launchpad.net/linuxuprising/apps/ubuntu impish InRelease
  Ign:2 http://archive.ubuntu.com/ubuntu impish InRelease  
  Ign:3 http://archive.ubuntu.com/ubuntu impish-updates InRelease
  Ign:4 http://archive.ubuntu.com/ubuntu impish-security InRelease
  Err:5 http://archive.ubuntu.com/ubuntu impish Release
    404  Not Found [IP: 2001:67c:1562::18 80]
  Err:6 http://archive.ubuntu.com/ubuntu impish-updates Release
    404  Not Found [IP: 2001:67c:1562::18 80]
  Err:7 http://archive.ubuntu.com/ubuntu impish-security Release
    404  Not Found [IP: 2001:67c:1562::18 80]
  Reading package lists... Done
  E: The repository 'http://archive.ubuntu.com/ubuntu impish Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://archive.ubuntu.com/ubuntu impish-updates Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://archive.ubuntu.com/ubuntu impish-security Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.

  ProblemType: Bug
  DistroRelease: Ubuntu 21.10
  Package: ubuntu-release-upgrader-core 1:21.10.9 [origin: unknown]
  ProcVersionSignature: Ubuntu 5.13.0-52.59-generic 5.13.19
  Uname: Linux 5.13.0-52-generic x86_64
  ApportVersion: 2.20.11-0ubuntu71.2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CrashDB: ubuntu
  Date: Tue Jul 26 00:49:21 2022
  InstallationDate: Installed on 2019-08-06 (1084 days ago)
  InstallationMedia: Kubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to impish on 2022-07-25 (0 days ago)

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