- name: "Add backup group"
  ansible.builtin.group:
    name: backup
    state: present

- name: "Add backup users"
  ansible.builtin.user:
    name: "{{ item.name }}"
    groups: "backup"
    state: present
  loop: "{{ backup_users }}"

- name: "Add keys for backup users"
  ansible.posix.authorized_key:
    user: "{{ item.0.name }}"
    key: "{{ item.1 }}"
  with_subelements:
    - "{{ backup_users }}"
    - keys