first commit

serv-01-baselinux/tasks/ipchange.yml

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+---
+- name: Configure static IP using Netplan (only if needed)
+  become: true
+  when:
+    - ansible_distribution == "Ubuntu"
+    - ansible_oldip is defined
+    - ansible_oldip != ansible_newip
+  block:
+
+    - name: Detect primary network interface
+      set_fact:
+        netplan_interface: "{{ ansible_default_ipv4.interface }}"
+
+    - name: Derive CIDR prefix from netmask (fallback to 24)
+      set_fact:
+        netmask_bits: "{{ ansible_default_ipv4.netmask | ansible.utils.ipaddr('prefix') | default('24', true) }}"
+
+    - name: Capture system DNS servers (fallback to 8.8.8.8)
+      set_fact:
+        current_dns_servers: "{{ ansible_dns.nameservers | default(['8.8.8.8']) }}"
+
+
+    - name: Generate Netplan config with static IP
+      ansible.builtin.copy:
+        dest: /etc/netplan/01-netcfg.yaml
+        mode: '0600'
+        content: |
+          network:
+            version: 2
+            renderer: networkd
+            ethernets:
+              {{ netplan_interface }}:
+                dhcp4: no
+                addresses: [{{ ansible_newip }}/{{ netmask_bits }}]
+                routes:
+                  - to: default
+                    via: {{ ansible_default_ipv4.gateway }}
+                nameservers:
+                  addresses: {{ current_dns_servers }}
+
+
+    - name: Remove default cloud-init netplan config
+      ansible.builtin.file:
+        path: /etc/netplan/50-cloud-init.yaml
+        state: absent
+      notify: Apply netplan
+
+    - name: Wait for network change to apply
+      ansible.builtin.pause:
+        seconds: 10
+
+    - name: Wait for host to become reachable on new IP
+      ansible.builtin.wait_for:
+        host: "{{ ansible_newip }}"
+        port: 22
+        delay: 5
+        timeout: 120
+        state: started
+
+    - name: Reassign ansible_host to the new static IP
+      set_fact:
+        ansible_host: "{{ ansible_newip }}"
+