kernelargs.yml

---
# Copyright 2019 Red Hat, Inc.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.

- name: Get the command line args of the node # noqa no-changed-when
  ansible.builtin.command: cat /proc/cmdline
  register: cmdline

- name: TSX KernelArgs compute node reboot prevention
  when:
    - '"nova_libvirt" in groups'
  block:
    - name: Check if node has a nova.conf
      ansible.builtin.stat:
        path: /var/lib/config-data/puppet-generated/nova_libvirt/etc/nova/nova.conf
      register: nova_conf_check

    - name: Enabling defer_reboot when TSX was added or appended
      when:
      - nova_conf_check.stat.exists
      - tripleo_kernel_args is regex("^[\s]*tsx=[^\s]+[\s]*$")
      block:
        - name: Warn operator about workload protection
          debug:
            msg: |
              Automated reboot for this node has been defered because it is already provisionned.
              Please schedule a manual reboot after this deployment is completed.

        - name: Setting defer reboot fact
          ansible.builtin.set_fact:
            tripleo_kernel_defer_reboot: true
            tripleo_kernel_reboot_protection: true

- name: Check if the kernelargs entry is already present in the file
  replace:
    regexp: TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS
    dest: /etc/default/grub
    replace: ''
  check_mode: true
  register: grub_file_entry_check

# Kernel Args Configuration
- block:
    # Leapp does not recognise grun entries starting other than GRUB
    # It results wrong formatting of entries in file /etc/default/grub
    # In order to fix it for FFU (queens to train), TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS has been renamed
    # Ensure the fresh deployment is also alinged with the same name
    - name: Delete older name TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS entries if present
      ansible.builtin.lineinfile:
        dest: /etc/default/grub
        regexp: 'TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS'
        state: absent
    - name: Ensure the kernel args ( {{ tripleo_kernel_args }} ) is present as GRUB_TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS
      ansible.builtin.lineinfile:
        dest: /etc/default/grub
        regexp: '^GRUB_TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS.*'
        insertafter: '^GRUB_CMDLINE_LINUX.*'
        line: 'GRUB_TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS=" {{ tripleo_kernel_args }} "'
    - name: Add GRUB_TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS to the GRUB_CMDLINE_LINUX parameter
      ansible.builtin.lineinfile:
        dest: /etc/default/grub
        line: 'GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX:+$GRUB_CMDLINE_LINUX }${GRUB_TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS}"'
        insertafter: '^GRUB_TRIPLEO_HEAT_TEMPLATE_KERNEL_ARGS.*'
    - name: Check grub config paths
      ansible.builtin.stat:
        path: "{{ item }}"
      register: grub_stat
      loop:
        - /boot/efi/EFI/BOOT
        - /boot/efi/EFI/redhat
        - /boot/efi/EFI/centos
        - /boot/efi/EFI/fedora
    - name: Generate grub config
      ansible.builtin.command: "grub2-mkconfig -o /boot/grub2/grub.cfg"

    - name: Generate EFI grub config
      ansible.builtin.command: "grub2-mkconfig -o {{ item.stat.path }}/grub.cfg"
      when: item.stat.exists|bool
      loop: "{{ grub_stat.results }}"

    - name: Copy grubenv to EFI directory
      ansible.builtin.copy:
        remote_src: true
        src: /boot/grub2/grubenv
        dest: "{{ item.stat.path }}/grubenv"
        mode: '600'
        owner: root
        group: root
      when: item.stat.exists|bool
      loop: "{{ grub_stat.results }}"
    - name: Set reboot required fact
      ansible.builtin.set_fact:
        reboot_required: true
  become: true
  when:
    - cmdline.stdout_lines is defined
    - tripleo_kernel_args | default('', true) | length > 0
    - tripleo_kernel_args not in cmdline.stdout

# Apply DPDK workarounds before reboot
- name: Apply DPDK workarounds
  ansible.builtin.include_role:
    name: tripleo_ovs_dpdk
    tasks_from: workarounds.yml
  when: reboot_required is defined and reboot_required

# Kernel modules loading
- name: Load type1 IOMMU driver for VFIO on boot
  import_role:
    name: tripleo_module_load
  vars:
    modules:
      - name: vfio_iommu_type1
  when: tripleo_kernel_args is search("iommu")

- name: Reboot block
  when:
    - reboot_required is defined and reboot_required
    - not tripleo_kernel_defer_reboot|bool
    - not tripleo_kernel_reboot_protection|bool
  block:
    - name: Reboot tasks
      ansible.builtin.include_tasks: reboot.yaml