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[Launchpad Bug Tracker <1926990@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package update-notifier - 3.192.44

---------------
update-notifier (3.192.44) impish; urgency=medium

  [ Lucas Moura ]
  * data/apt_check.py
    - Show esm-apps status header when running on LTS distro that
      has not yet entered Extended Security Maintenance

 -- Brian Murray <brian@xxxxxxxxxx>  Thu, 13 May 2021 14:47:01 -0700

** Changed in: update-notifier (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1926990

Title:
  update-notifier should not alert users about esm-apps in a ESM machine

Status in update-notifier package in Ubuntu:
  Fix Released
Status in update-notifier source package in Xenial:
  New
Status in update-notifier source package in Bionic:
  New
Status in update-notifier source package in Focal:
  New

Bug description:
  [Impact]
  When users are running an ESM distro and looking at motd message they may be trigger by an alert generated by update-notifier that both esm-infra and esm-apps could be enable in the machine to receive future updates. However, esm-apps will not bring much to an ESM distro. This means that
  users will be receiving alerts for esm-apps that are not necessary

  
  [Test case]

  To reproduce the issue, you can:

  1. Launch a xenial container
  2. create the file /etc/ubuntu-advantage/uaclient.conf with the following content:

  # Ubuntu-Advantage client config file.
  contract_url: 'https://contracts.canonical.com'
  security_url: 'https://ubuntu.com/security'
  data_dir: /var/lib/ubuntu-advantage
  log_level: debug
  log_file: /var/log/ubuntu-advantage.log
  features:
    allow_beta: true

  3. install ubuntu-advantage-client from this ppa:
  https://code.launchpad.net/~ua-client/+archive/ubuntu/daily

  PS: Make sure to not allow the installation to override the config
  file you have just created.

  4. Update the version of update-notifier to the one in proposed
  5. Run `/usr/lib/update-notifier/apt-check --human-readable`
  6. Verify that both esm-infra and esm-apps alerts appear in the end of the message

  To verify that the error is fixed:

  1. Run the past scenario until step 3
  2. Install the new update-notifier from this ppa:
  https://launchpad.net/~lamoura/+archive/ubuntu/update-notifier-test-ppa/
  3. Run `/usr/lib/update-notifier/apt-check --human-readable`
  4. Verify that only esm-infra is now showing an alert message at the end

  [Where problems could occur]

  We are only changing here the condition to output esm-apps alerts. If that condition is not right we may miss to display those messages to users that
  need them.

  [Discussion]
  When running /usr/lib/update-notifier/apt-check on a ESM machine, we could alert the user about the existence of both esm-infra and esm-apps if the system has unauthenticated source file for both services. Therefore, we would display a message like that in the system:

  --------------------------
  Enable UA Apps: ESM to receive additional future security updates.
  See https://ubuntu.com/security/esm or run: sudo ua status

  Enable UA Infra: ESM to receive additional future security updates.
  See https://ubuntu.com/security/esm or run: sudo ua status
  ----------------------------------

  This is not ideal, since ESM machine will not gain much from esm-apps.
  Also, this messaging may hide the importance of using esm-infra on ESM
  machines, since the users will not know beforehand which service to
  prioritize.

  == Changelog ==

    * data/apt_check.py
      - do not show esm-apps alerts on esm distros

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