ansible-maintenance/tasks/restart.yml

- name: schedule restart randomly between 5-7 AM if necessary
  shell: |
    hour=$(shuf -i 5-6 -n 1)
    minute=$(shuf -i 0-59 -n 1)
    shutdown -r "$hour:$minute"
    echo "restart scheduled for $hour:$minute"
  when: restart_needed.stdout_lines | length > 0
  register: restard_scheduled

- name: output "restart schedule"
  debug:
    var: restard_scheduled.stdout_lines
  when: restart_needed.stdout_lines | length > 0