- hosts:
  - OSEv3
  - localhost
  become: true
  tasks:
    - name: debug hostvars for OSEv3 group
      debug:
        var: "{{ hostvars }}"
        verbosity: 3
    - name: Update /etc/hosts file with all nodes
      blockinfile:
        path: /etc/hosts
        block: |
          {% for item in groups['OSEv3'] %}
          {{ hostvars[item]['ansible_default_ipv4']['address'] }} {{ item }}
          {% endfor %}