Added playbook that sets the netplan of the servers to only use the internal DNS

dnaclab_linux/prestage_update_dns.yaml

@@ -0,0 +1,31 @@
+---
+- name: Change the netplan configuration to only allow the internal DNS server
+  hosts: all
+  become: yes
+  vars_files:
+    - global_vars/main.yml
+
+  tasks:
+
+    - name: Check if the netplan configuration is present
+      ansible.builtin.stat:
+        path: /etc/netplan/00-installer-config.yaml 
+
+    - name: Set the new netplan to use only the internal DNS
+      ansible.builtin.command: netplan set ethernets.ens160.nameservers.addresses=[10.221.0.100]
+    
+    - name: Apply the new netplan
+      ansible.builtin.command: netplan apply
+    
+    - name: Restart the resolved service
+      ansible.builtin.command: systemctl restart systemd-resolved.service
+
+    - name: Get currently configured DNS servers
+      ansible.builtin.command: netplan get ethernets.ens160.nameservers.addresses
+      register: dns_check
+
+    - name: Validate that only the internal DNS is configured
+      ansible.builtin.debug:
+        msg: Change successfull!
+      when: dns_check.stdout == "- 10.221.0.100"
+

dnaclab_linux/reboot.yml

@@ -1,6 +1,6 @@
 ---
 - name: Reboots linux host and checks status
-  hosts: kubernetes_dev
+  hosts: kubernetes
   become: yes
   vars_files:
     - global_vars/main.yml