update: add network configuration variables and enhance Ansible playbooks for dynamic IP handling

vagrant/dev/ubuntu/ansible/copy_k8s_config.yaml

@@ -4,6 +4,8 @@
   connection: local
   become: true
   become_user: root
+  vars_files:
+    - vars.yaml
 
   tasks:
     - name: Ensure .kube directory exists
@@ -17,7 +19,7 @@
     - name: Copy kubeconfig using scp directly
       ansible.builtin.command: >
         scp -i ~/.ssh/vm1_key -o StrictHostKeyChecking=no
-        vagrant@192.168.56.80:/home/vagrant/.kube/config
+        vagrant@{{ vm1_ip }}:/home/vagrant/.kube/config
         /home/vagrant/.kube/config
       become: false
 
@@ -32,7 +34,7 @@
     - name: copy k3s binary to /usr/local/bin/k3s
       ansible.builtin.command: >
         scp -i ~/.ssh/vm1_key -o StrictHostKeyChecking=no
-        vagrant@192.168.56.80:/usr/local/bin/k3s
+        vagrant@{{ vm1_ip }}:/usr/local/bin/k3s
         /usr/local/bin/k3s
       become: true
 
@@ -63,8 +65,8 @@
         group: vagrant
         mode: "0644"
 
-    - name: replace 127.0.0.1:6443 192.168.56.80:6443 in .kube/config
+    - name: replace 127.0.0.1:6443 with {{ vm1_ip }}:6443 in .kube/config
       ansible.builtin.replace:
         path: /home/vagrant/.kube/config
         regexp: "127.0.0.1:6443"
-        replace: "192.168.56.80:6443"
+        replace: "{{ vm1_ip }}:6443"