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QA:Testcase Debranding

Associated release criterion

This test case is associated with the Release_Criteria - Debranding release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion.

Description

The Rocky Linux Release Engineering Team builds and maintains tools to manage the debranding of packages received from the upstream vendor. They have published a comprehensive debranding guide and maintain a list of packages requiring debranding patches.

This testcase will verify that all packages available on released media that Rocky Linux Release Engineering has identified as requiring debranding are debranded successfully per their specification.

Setup

  1. Obtain access to an environment with the dnf, and koji commands and access to Rocky Linux Gitlab and Rocky Linux Koji
  2. Download the ISO to be tested to test machine.
  3. Configure /etc/koji.conf to access the Rocky Linux Koji.
  4. Download a recent copy the patch.yml from Rocky Linux Gitlab.

patch.yml

Packages listed in patch.yml are names of source RPMs. Binary RPMs containing content produced by building the patched source RPMs need to be validated. The easiest way to get the list of all possible binary RPMs for a particular package and arch is to ask obtain that information in koji.

How to test

  1. Mount the ISO to be tested locally.
    • Example: 
      $ mount -o loop Rocky-8.5-x86_64-dvd1.iso /media
  2. Determine the path(s) to the repodata directory(ies) on the ISO.
    • Example: 
      $ find /media -name repodata
  3. For each package to be validated get the names of the noarch and <arch> specific packages created from it.
    • Example: 
      $ koji --quiet latest-build --arch=x86_64 dist-rocky8-compose <package>
$ koji --quiet latest-build --arch=noarch dist-rocky8-compose <package>
  4. Use dnf to obtain the paths to the binary packages requiring debranding.
    • Example: 
      $ dnf download --urls --repofrompath BaseOS,/media/BaseOS --repo BaseOS \
    --repofrompath Minimal,/media/Minimal --repo Minimal \
    <binary_package>

  5. Copy the <binary_package> from the media and examine it's metadata and/or contents to determine if it has obviously been patched.

    • Example: 
      $ rpm -q --changelog -p <path_to_binary_package> | head | \
    grep "Release Engineering <releng@rockylinux.org>" -C2 | \
    grep -Eq "<pattern_to_find>"

$ rpm2cpio <path_to_binary_package> |
    cpio --quiet --extract --to-stdout .<file_to_examine> | \
    grep -Eq "<pattern_to_find>"

    NOTE

    Note all debranding patches will patch files directly and leave very obvious traces, some patches don't even add changelog messages to use as an indicator that the package has been patched or debranded. Sometimes the only solution is to extract the binary package and examine the contents directly to find something to test.

  6. Unmount the ISO.

    • Example: 
      $ umount /media

Expected Results

  1. Packages tracked by Release Engineering as requiring debranding and published on installation media are, in fact, debranded per their specification.

Sample Output

$ sudo mount -o loop Rocky-8.5-aarch64-minimal.iso /media
mount: /media: WARNING: device write-protected, mounted read-only.

$ find /media -name repodata
/media/BaseOS/repodata
/media/Minimal/repodata

$ curl -LOR https://git.rockylinux.org/rocky/metadata/-/raw/main/patch.yml
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  3410  100  3410    0     0  20419      0 --:--:-- --:--:-- --:--:-- 20419

$ yq .debrand.all[] patch.yml | column -x -c 100 -o " "
abrt                   anaconda               anaconda-user-help   chrony
cloud-init             cockpit                crash                dhcp
dnf                    firefox                fwupd                gcc
gcc-toolset-9-gcc      gcc-toolset-10-gcc     gcc-toolset-11-gcc   gcc-toolset-12-gcc
gnome-settings-daemon  grub2                  httpd                initial-setup
kernel                 kernel-rt              libdnf               libreoffice
libreport              nginx                  opa-ff               opa-fm
openscap               pesign                 PackageKit           python-pip
python3                redhat-rpm-config      scap-security-guide  shim
shim-unsigned-x64      shim-unsigned-aarch64  sos                  subscription-manager
systemd                thunderbird            WALinuxAgent

$ ./yq .debrand.r8[] patch.yml | column -x -c 100 -o " "
dotnet3.0  fwupdate  gnome-boxes  libguestfs  pcs  plymouth
python2

NOTE: Only a single package will be shown in this Example.

$ koji --quiet latest-build --arch=x86_64 dist-rocky8-compose sos

$ koji --quiet latest-build --arch=noarch dist-rocky8-compose sos
sos-4.1-9.el8_5.rocky.3.noarch
sos-audit-4.1-9.el8_5.rocky.3.noarch

$ dnf download --urls --repofrompath BaseOS,/media/BaseOS --repo BaseOS \
  --repofrompath Minimal,/media/Minimal --repo Minimal \
  sos sos-audit | grep -E "^file"
file:///media/BaseOS/Packages/s/sos-4.1-5.el8.noarch.rpm
file:///media/BaseOS/Packages/s/sos-audit-4.1-5.el8.noarch.rpm

$ rpm -q --changelog -p /media/BaseOS/Packages/s/sos-4.1-5.el8.noarch.rpm | \
    head | grep "Release Engineering <releng@rockylinux.org>" -C2
* Mon Oct 18 2021 Release Engineering <releng@rockylinux.org> - 4.1-5
- Remove Red Hat branding from sos
$ echo $?
0

$ rpm -q --changelog -p /media/BaseOS/Packages/s/sos-audit-4.1-5.el8.noarch.rpm | \
    head | grep "Release Engineering <releng@rockylinux.org>" -C2
* Mon Oct 18 2021 Release Engineering <releng@rockylinux.org> - 4.1-5
- Remove Red Hat branding from sos
$ echo $?
0

$ umount /media

$ sudo mount -o loop Rocky-8.5-aarch64-minimal.iso /media
mount: /media: WARNING: device write-protected, mounted read-only.

$ find /media -name repodata
/media/BaseOS/repodata
/media/Minimal/repodata

$ curl -LOR https://git.rockylinux.org/rocky/metadata/-/raw/main/patch.yml
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  3410  100  3410    0     0  20419      0 --:--:-- --:--:-- --:--:-- 20419

$ yq .debrand.all[] patch.yml | column -x -c 100 -o " "
abrt                   anaconda               anaconda-user-help   chrony
cloud-init             cockpit                crash                dhcp
dnf                    firefox                fwupd                gcc
gcc-toolset-9-gcc      gcc-toolset-10-gcc     gcc-toolset-11-gcc   gcc-toolset-12-gcc
gnome-settings-daemon  grub2                  httpd                initial-setup
kernel                 kernel-rt              libdnf               libreoffice
libreport              nginx                  opa-ff               opa-fm
openscap               pesign                 PackageKit           python-pip
python3                redhat-rpm-config      scap-security-guide  shim
shim-unsigned-x64      shim-unsigned-aarch64  sos                  subscription-manager
systemd                thunderbird            WALinuxAgent

$ ./yq .debrand.r8[] patch.yml | column -x -c 100 -o " "
dotnet3.0  fwupdate  gnome-boxes  libguestfs  pcs  plymouth
python2

NOTE: Only a single package will be shown in this Example.

$ koji --quiet latest-build --arch=x86_64 dist-rocky8-compose sos

$ koji --quiet latest-build --arch=noarch dist-rocky8-compose sos
sos-4.1-9.el8_5.rocky.3.noarch
sos-audit-4.1-9.el8_5.rocky.3.noarch

$ dnf download --urls --repofrompath BaseOS,/media/BaseOS --repo BaseOS \
  --repofrompath Minimal,/media/Minimal --repo Minimal \
  sos sos-audit | grep -E "^file"
file:///media/BaseOS/Packages/s/sos-4.1-5.el8.noarch.rpm
file:///media/BaseOS/Packages/s/sos-audit-4.1-5.el8.noarch.rpm

$ rpm -q --changelog -p /media/BaseOS/Packages/s/sos-4.1-5.el8.noarch.rpm | \
    head | grep "Release Engineering <releng@rockylinux.org>" -C2
$ echo $?
1

$ rpm -q --changelog -p /media/BaseOS/Packages/s/sos-audit-4.1-5.el8.noarch.rpm | \
    head | grep "Release Engineering <releng@rockylinux.org>" -C2
$ echo $?
1

$ umount /media

Additional Information

If you have questions with respect to this content or to report concerns regarding the use or misuse content please do not hesitate to contact us at testing@rockylinux.org.

Rocky Linux and the Rocky Enterprise Software Foundation (RESF) does not make any express or implied warranties, including but not limited to the warranties of non-infringement of any third party intellectual property rights. RESF does not warrant that any pending trademark applications for trademarks of RESF will result in any granted trademark protection. RESF shall not be liable for any claims relating to user's activities falling within the scope of the permission and user hereby agrees to indemnify, defend and hold RESF and its contributors harmless against any such claim.

This work is heavily inspired by the Fedora Quality Assurance documents which were made available under Attribution-Share Alike 4.0 International license unless otherwise noted.

This content is licensed under under Attribution-Share Alike 4.0 International license unless otherwise noted.