playbook to update etc/hosts file

update_host_file.yml

@@ -0,0 +1,17 @@
+- 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 %}
+