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[Launchpad Bug Tracker <2050022@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package ubuntu-advantage-tools - 31.2~18.04

---------------
ubuntu-advantage-tools (31.2~18.04) bionic; urgency=medium

  * Backport new upstream release (LP: #2048921)

ubuntu-advantage-tools (31.2) noble; urgency=medium

  * properly rename logrotate conffile to avoid duplicate confiles, keep user changes
    and avoid unnecessary prompts (LP: #2055046)
  * use mv_conffile on all ubuntu-advantage-tools conffiles to avoid "obsolete" dpkg
    conffile statuses
  * fix regression in api u.pro.attach.auto.should_auto_attach.v1 so that it works with
    the new package names

ubuntu-advantage-tools (31.1) noble; urgency=medium

  * fix unit test that failed on newer version of python

ubuntu-advantage-tools (31) noble; urgency=medium

  * d/*:
    - rename ubuntu-advantage-tools to ubuntu-pro-client
    - rename ubuntu-advantage-pro to ubuntu-pro-image-auto-attach
  * d/apparmor:
    - introduce new ubuntu_pro_apt_news apparmor policy
  * d/control:
    - update descriptions and homepages
    - update ubuntu-pro-client-l10n to Depend on same binary version
      of ubuntu-pro-client
  * d/rules:
    - install ubuntu_pro_apt_news apparmor policy
  * d/ubuntu-pro-client.prerm:
    - removed dependency on python3 by reimplementing in sh (LP: #2021988)
  * apport:
    - collect logs related to ubuntu_pro_apt_news apparmor policy
  * release-upgrades.d/ubuntu-advantage-upgrades.cfg:
    - convert APT list files to deb822 files when upgrading to noble
  * systemd/apt-news.service:
    - add apparmor profile and capability restrictions
  * systemd/ubuntu-advantage.service:
    - avoid deadlock when started during cloud-config.service (LP: #2050022)
  * New upstream release 31 (LP: #2048921)
    - api:
      + u.pro.attach.auto.full_auto_attach.v1: new cloud_override param
      + u.pro.status.enabled_services.v1:
        * include services in "warning" state
        * include "usg"
      + u.pro.security.fix.*.plan.v1: export common objects from
        endpoint modules (GH: #2714)
    - cli:
      + add autocomplete for api subcommand
      + autocomplete multiple services for enable/disable subcommands
      + if lock is held, cli will retry over the course of a few seconds
    - collect-logs:
      + include logs related to ubuntu_pro_apt_news apparmor policy
      + include logs of apt-news.service
      + include logs of esm-cache.service
    - enable:
      + use deb822 apt source file format when on noble or later
    - fix:
      + avoid insinuating that CVEs were found on the machine (GH: #1522)
      + ignore LSNs when considering related USNs
      + pick CVE description based on what packages are installed
    - landscape:
      + don't disable landscape on ubuntu releases where it cannot be
        enabled (GH: #2743)
      + no longer assume landscape-client gets removed on disable (GH: #2840)
      + leave client.conf in place instead of renaming
      + require service to be running to consider "enabled"
      + new explanatory message when disabling
    - motd: properly pluralize messages about updates (GH: #1579)
    - status: show warning when canonical-livepatch command fails
      (LP: #2019997)
    - timer jobs: jobs-status.json is now world readable (GH: #2601)

ubuntu-advantage-tools (30.1) noble; urgency=medium

  * fix UnboundLocalError in update-check error handling (LP: #2043836)

 -- Grant Orndorff <grant.orndorff@xxxxxxxxxxxxx>  Thu, 29 Feb 2024
09:03:11 -0500

** Changed in: ubuntu-advantage-tools (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2050022

Title:
  Cannot run apt after installation if attached to Ubuntu Pro

Status in subiquity:
  Invalid
Status in ubuntu-advantage-tools package in Ubuntu:
  Fix Released
Status in ubuntu-advantage-tools source package in Xenial:
  Fix Released
Status in ubuntu-advantage-tools source package in Bionic:
  Fix Released
Status in ubuntu-advantage-tools source package in Focal:
  Fix Released
Status in ubuntu-advantage-tools source package in Jammy:
  Fix Released
Status in ubuntu-advantage-tools source package in Mantic:
  Fix Released

Bug description:
  [ ubuntu-advantage-tools SRU info ]

  [ Impact ]

  If ubuntu-advantage-tools (u-a-t) is not already installed, but cloud-
  init user-data includes "ubuntu_advantage" configuration data, then
  cloud-init will try to install u-a-t. On install, u-a-t needs to start
  ubuntu-advantage.service. ubuntu-advantage.service is ordered
  After=cloud-config.service. This results in deadlock, preventing apt
  from ever finishing. The apt lock is held forever and cloud-init never
  continues.

  The fix is to break the deadlock by removing the "After=cloud-
  config.service" ordering dependency from ubuntu-advantage.service.
  ubuntu-advantage.service should still wait until cloud-config.service
  is done activating to do any work though, so that waiting is now
  implemented in the python script that is executed by the service.

  [ Test Plan ]

  ```
  # Launch a lxd container with ubuntu_advantage cloudinit user-data:
  lxc launch ubuntu-daily:bionic test --config "user.user-data=#cloud-config\nubuntu_advantage: {}"
  # Enter the container
  lxc shell test
  # Remove u-a-t
  apt remove ubuntu-advantage-tools
  # tell cloud init to clean and reboot
  cloud-init clean --logs --reboot
  # enter the container again
  lxc shell test
  # wait for cloud-init to finish
  cloud-init status --wait
  # if the bug is happening, that command will never finish
  ```
  This test has been added as a regression test to u-a-t and will be run as part of the validation for LP: #2048921 (see: https://github.com/canonical/ubuntu-pro-client/blob/release-31/features/install_uninstall.feature#L116)

  [ Where problems could occur ]

  This does not remove the ordering dependency, but just changes how the
  ordering dependency between ubuntu-advantage.service and cloud-
  config.service is implemented. This difference in implementation could
  cause different unexpected ordering problems to occur in the future.

  The waiting function in python was designed such that it will
  eventually continue if cloud-config.service takes longer than 20
  minutes. If cloud-config.service takes 20 minutes doing an Ubuntu Pro
  related operation (normal operations take less than 10 seconds at
  most), then ubuntu-advantage.service could continue and potentially
  error when it tries to do something in conflict with the ongoing
  operation. Alternatively, if the wait was implemented incorrectly,
  then ubuntu-advantage.service could stall forever unnecessarily if
  cloud-config.service doesn't finish.

  
  [Original Description]

  During install of Ubuntu Server 22.04.3 you are asked if you want to
  attach to Ubuntu Pro. If you do then following a reboot you cannot run
  apt. cloud-init runs and installs ubuntu-advantage-tools which for
  some reason never releases the lock file.

  $ sudo apt dist-upgrade
  Waiting for cache lock: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 994 (apt-get)

  If you reboot at this point then you receive:

  $ sudo apt dist-upgrade
  E: dpkg was interrupted, you must manually run 'sudo dpkg --configure -a' to correct the problem.

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntu-advantage-tools 30~22.04
  ProcVersionSignature: Ubuntu 6.5.0-14.14~22.04.1-generic 6.5.3
  Uname: Linux 6.5.0-14-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CloudArchitecture: x86_64
  CloudID: none
  CloudName: none
  CloudPlatform: none
  CloudSubPlatform: config
  Date: Sun Jan 21 23:11:59 2024
  InstallationDate: Installed on 2024-01-21 (0 days ago)
  InstallationMedia: Ubuntu-Server 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230810)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=C.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-advantage-tools
  UpgradeStatus: No upgrade log present (probably fresh install)
  cloud-id.txt: none
  livepatch-status.txt-error: Invalid command specified '/snap/bin/canonical-livepatch status'.
  pro-journal.txt: -- No entries --
  uaclient.conf:
   contract_url: https://contracts.canonical.com
   log_level: debug

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