[Bug 2069391] Re: debsums reports file changed /usr/lib/systemd/system/cloud-init.service

[Chad Smith]

Thanks @alberto. I confirmed the following:


The question of whether apt upgrade would show us the Files changed prompt which would break unattended upgrades. The answer is we don't have to worry about it because apt upgrade only reacts to changes in files registered by the deb package as conffiles. Any other non-conffiles are not monitored for that change  dialog.  From dpkg --status cloud-init or directly at /var/lib/dpkg/info/cloud-init.conffiles we can see that our registered conffiles all live under /etc, so the fact that livecd-rootfs has a modified /lib/systemd/system/cloud-init.service conf doesn't register for apt upgrade type config changed dialogs.    That said, any modified path installed which has an md5sum listed in /var/lib/dpkg/info/cloud-init.md5sums would be noted by  debsums -c if the md5sum changes on those files. 


So, there is nothing in cloud-init upstream packaging to do here related to this fix because a modified /lib/systemd/system/cloud-init.service doesn't trigger that prompt on apt upgrade or unattended upgrades.

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Title:
  debsums reports file changed /usr/lib/systemd/system/cloud-
  init.service

Status in cloud-init package in Ubuntu:
  Invalid
Status in livecd-rootfs package in Ubuntu:
  Triaged
Status in subiquity package in Ubuntu:
  Invalid

Bug description:
  [Summary]
  debsums reported /lib/systemd/system/cloud-init.service was changed.
  Also the cloud-init.service mentioned it was auto-generated by installer build process.

  The diff output from package included and system installed.
  $ diff ./extract-cloud-init/lib/systemd/system/cloud-init.service /lib/systemd/system/cloud-init.service 
  0a1,2
  > # Automatically generated by installer build process
  > # Based on cloud-init 23.1 for Desktop LiveCD
  8a11,13
  > # Installer Added After=NetworkManager* ordering
  > After=NetworkManager.service
  > After=NetworkManager-wait-online.service
  13c18
  < Before=sysinit.target
  ---
  > # Before=sysinit.target  Installer removed to allow for NM dependency
  16,18c21
  < ConditionPathExists=!/etc/cloud/cloud-init.disabled
  < ConditionKernelCommandLine=!cloud-init=disabled
  < ConditionEnvironment=!KERNEL_CMDLINE=cloud-init=disabled
  ---
  > Before=systemd-user-sessions.service

  
  [Steps to reproduce]
  1. Install Ubuntu 24.04 desktop
  2. Excute command `debsums -c`

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: cloud-init 24.1.3-0ubuntu3
  ProcVersionSignature: Ubuntu 6.8.0-35.35-generic 6.8.4
  Uname: Linux 6.8.0-35-generic x86_64
  ApportVersion: 2.28.1-0ubuntu2
  Architecture: amd64
  AutoInstallUserData: Error: [Errno 13] Permission denied: '/var/log/installer/autoinstall-user-data'
  CasperMD5CheckResult: pass
  CurtinConfigCurtHooks: Error: [Errno 13] Permission denied: '/var/log/installer/curtin-install/subiquity-curthooks.conf'
  CurtinConfigExtract: Error: [Errno 13] Permission denied: '/var/log/installer/curtin-install/subiquity-extract.conf'
  CurtinConfigInitial: Error: [Errno 13] Permission denied: '/var/log/installer/curtin-install/subiquity-initial.conf'
  CurtinConfigPartitioning: Error: [Errno 13] Permission denied: '/var/log/installer/curtin-install/subiquity-partitioning.conf'
  Date: Fri Jun 14 13:57:57 2024
  InstallationDate: Installed on 2024-05-02 (43 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  InstallerCloudCfg: Error: [Errno 13] Permission denied: '/etc/cloud/cloud.cfg.d/99-installer.cfg'
  PackageArchitecture: all
  SourcePackage: cloud-init
  SubiquityServerDebug: Error: [Errno 13] Permission denied: '/var/log/installer/subiquity-server-debug.log.3103'
  UpgradeStatus: No upgrade log present (probably fresh install)
  cloud-init-log-warnings:
   2024-05-02 07:52:44,723 - activators.py[WARNING]: Running ['netplan', 'apply'] resulted in stderr output: 
   ** (generate:1042): WARNING **: 07:52:44.418: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.
   ** (process:1041): WARNING **: 07:52:44.646: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.
   ** (process:1041): WARNING **: 07:52:44.696: Permissions for /etc/netplan/01-network-manager-all.yaml are too open. Netplan configuration should NOT be accessible by others.
   2024-05-02 07:53:41,599 - cc_final_message.py[WARNING]: Used fallback datasource
  user_data.txt: Error: [Errno 13] Permission denied: '/var/lib/cloud/instances/iid-datasource-none/user-data.txt'

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