- hosts: all
  user: admin
  become: true
  tasks:
    - name: Verify if system is Debian
      debug:
        msg: "This playbook is running on a Debian system."
      when: ansible_facts['os_family'] == "Debian"

    - name: Stop playbook if system is not Debian
      fail:
        msg: "This playbook only supports Debian."
      when: ansible_facts['os_family'] != "Debian"

    - name: Include monitoring role
      import_role:
        name: monitoring
      when: ansible_facts['os_family'] == "Debian"