fix: use primary public IP for k3s join to match existing API cert SAN

ansible/site.yml

@@ -20,7 +20,7 @@
   vars:
     k3s_primary: true
     k3s_token: "{{ lookup('password', '/dev/null length=32 chars=ascii_letters,digits') }}"
-    k3s_primary_ip: "{{ ansible_all_ipv4_addresses | select('match', '^10\\.') | first }}"
+    k3s_primary_ip: "{{ ansible_default_ipv4.address }}"
     k3s_node_ip: "{{ ansible_all_ipv4_addresses | select('match', '^10\\.') | first }}"
 
   roles:
@@ -35,14 +35,10 @@
       register: node_token
       changed_when: false
 
-    - name: Get private IP
-      set_fact:
-        k3s_primary_private_ip: "{{ ansible_all_ipv4_addresses | select('match', '^10\\.') | first }}"
-
     - name: Set join token fact
       set_fact:
         k3s_token: "{{ node_token.stdout }}"
-        k3s_primary_ip: "{{ k3s_primary_private_ip }}"
+        k3s_primary_ip: "{{ ansible_default_ipv4.address }}"
 
     - name: Fetch kubeconfig
       fetch: