---
- name: Ensure grubby is installed
  package:
    name: grubby
    state: present

- name: Check current state of cgroup
  command: grep -Eq '^kernelopts=.* systemd\.unified_cgroup_hierarchy=1' /boot/grub2/grubenv
  register: __kernel_cgroup_exception
  check_mode: False
  failed_when: False
  changed_when: False

- name: Enabled cgroup v2 configuration
  command: grubby --update-kernel=ALL --args="systemd.unified_cgroup_hierarchy=1"
  when:
    - __kernel_cgroup_exception.rc != 0
    - kernel_cgroup_v2_enabled | bool
  notify:
    - __kernel_server_restart

- name: Disable cgroup v2 configuration
  command: grubby --update-kernel=ALL --args="systemd.unified_cgroup_hierarchy=0"
  when:
    - __kernel_cgroup_exception.rc == 0
    - not kernel_cgroup_v2_enabled | bool
  notify:
    - __kernel_server_restart