---
- name: "Look for parameter {{ item.key }}"
  ansible.builtin.shell:
    cmd: 'grep "^GRUB_CMDLINE_LINUX=.*{{ item.key }}={{ item.value }}" /etc/default/grub || true'
  changed_when: False
  register: grub_cmdline_find_param


- name: "Add {{ item.key }}={{ item.value }}"
  ansible.builtin.lineinfile:
    path: /etc/default/grub
    line: 'GRUB_CMDLINE_LINUX="${GRUB_CMDLINE_LINUX} {{ item.key }}={{ item.value }}"'
    insertafter: '^GRUB_CMDLINE_LINUX='
    owner: root
    group: root
    mode: 0644
    backup: yes
  notify:
    - "update-grub for cmdlineparameter"