[Bug 2055239] Re: Warning: The unit file, source configuration file or drop-ins of {apt-news, esm-cache}.service changed on disk. Run 'systemctl daemon-reload' to reload units.

[Nick Rosbrook]

Note that the patch is already present in v256, so this only needs to be
fixed in Noble.

** Tags removed: rls-nn-incoming
** Tags added: systemd-sru-next

** Also affects: systemd (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-advantage-tools (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Changed in: systemd (Ubuntu)
       Status: New => Fix Released

** Changed in: systemd (Ubuntu Noble)
     Assignee: (unassigned) => Nick Rosbrook (enr0n)

** Changed in: systemd (Ubuntu Noble)
       Status: New => Triaged

** Changed in: ubuntu-advantage-tools (Ubuntu Noble)
       Status: New => Invalid

** Tags added: foundations-todo

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Title:
  Warning: The unit file, source configuration file or drop-ins of {apt-
  news,esm-cache}.service changed on disk. Run 'systemctl daemon-reload'
  to reload units.

Status in snapd:
  New
Status in systemd package in Ubuntu:
  Fix Released
Status in ubuntu-advantage-tools package in Ubuntu:
  Invalid
Status in systemd source package in Noble:
  Triaged
Status in ubuntu-advantage-tools source package in Noble:
  Invalid

Bug description:
  I recently started seeing the following warning messages when I run
  `apt update`.

  $ sudo apt update
  Warning: The unit file, source configuration file or drop-ins of apt-news.service changed on disk. Run 'systemctl daemon-reload' to reload units.
  Warning: The unit file, source configuration file or drop-ins of esm-cache.service changed on disk. Run 'systemctl daemon-reload' to reload units.
  ...

  apt-news.service for example is in /lib/systemd/system/apt-
  news.service and it's a static file managed by the package. Does the
  package maintenance script call systemd related hooks to reload the
  config whenever the package gets updated?

  $ systemctl cat apt-news.service
  # /usr/lib/systemd/system/apt-news.service
  # APT News is hosted at https://motd.ubuntu.com/aptnews.json and can include
  # timely information related to apt updates available to your system.
  ...

  $ dpkg -S /lib/systemd/system/apt-news.service
  ubuntu-pro-client: /lib/systemd/system/apt-news.service

  ProblemType: BugDistroRelease: Ubuntu 24.04
  Package: ubuntu-pro-client 31.1
  ProcVersionSignature: Ubuntu 6.6.0-14.14-generic 6.6.3
  Uname: Linux 6.6.0-14-generic x86_64
  NonfreeKernelModules: zfs
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Feb 28 13:06:35 2024
  InstallationDate: Installed on 2024-01-08 (51 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Daily amd64 (20240104)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>SourcePackage: ubuntu-advantage-tools
  UpgradeStatus: No upgrade log present (probably fresh install)
  apparmor_logs.txt:

  cloud-id.txt-error:
   Failed running command 'cloud-id' [exit(2)]. Message: REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient permissions
   REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg, insufficient permissions
   REDACTED config part /etc/cloud/cloud.cfg.d/99-installer.cfg, insufficient permissions
   REDACTED config part /etc/cloud/cloud.cfg.d/90-installer-network.cfg, insufficient permissions
  livepatch-status.txt-error: Invalid command specified '/snap/bin/canonical-livepatch status'.
  uaclient.conf:
   contract_url: https://contracts.canonical.com
   log_level: debug

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