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INFRA-804: document GRUB boot issue on RL9 #1343

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merged 2 commits into from
Oct 29, 2024
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INFRA-804: document GRUB boot issue on RL9 #1343

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52c2886
INFRA-804: document GRUB boot issue on RL9
priteau Oct 24, 2024
eaefad7
Add hook to automate removal of --root-dev-only
technowhizz Oct 25, 2024
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16 changes: 16 additions & 0 deletions doc/source/operations/upgrading-openstack.rst
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Expand Up @@ -130,6 +130,13 @@ Known issues
around this in custom config, see the SMS PR for an example:
https://github.com/stackhpc/smslab-kayobe-config/pull/354

* Due to a `security-related change in the GRUB package on Rocky Linux 9
<https://access.redhat.com/security/cve/CVE-2023-4001>`__, the operating
system can become unbootable (boot will stop at a ``grub>`` prompt). Remove
the ``--root-dev-only`` option from ``/boot/efi/EFI/rocky/grub.cfg`` after
applying package updates. This will happen automatically as a post hook when
running the ``kayobe overcloud host package update`` command.

Security baseline
=================

Expand Down Expand Up @@ -863,6 +870,15 @@ To update all eligible packages, use ``*``, escaping if necessary:

kayobe overcloud host package update --packages "*" --limit <host>

.. note::

Due to a `security-related change in the GRUB package on Rocky Linux 9
<https://access.redhat.com/security/cve/CVE-2023-4001>`__, the operating
system can become unbootable (boot will stop at a ``grub>`` prompt). Remove
the ``--root-dev-only`` option from ``/boot/efi/EFI/rocky/grub.cfg`` after
applying package updates. This will happen automatically as a post hook when
running the ``kayobe overcloud host package update`` command.

If the kernel has been upgraded, reboot the host or batch of hosts to pick up
the change:

Expand Down
15 changes: 15 additions & 0 deletions etc/kayobe/ansible/fix-grub-rl9.yml
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@@ -0,0 +1,15 @@
---
- name: Remove "--root-dev-only" from grub.cfg if OS is Rocky Linux 9
hosts: overcloud
become: yes
gather_facts: true

tasks:
- name: Remove "--root-dev-only" from /boot/efi/EFI/rocky/grub.cfg
ansible.builtin.replace:
path: /boot/efi/EFI/rocky/grub.cfg
regexp: '--root-dev-only\s?'
replace: ''
when:
- ansible_facts['distribution'] == 'Rocky'
- ansible_facts['distribution_major_version'] == '9'
1 change: 1 addition & 0 deletions etc/kayobe/hooks/overcloud-host-package-update/post.d/10-fix-grub-rl9.yml
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../../../ansible/fix-grub-rl9.yml