Update Pi-hole DNS playbook for v6

Pi-hole v6 uses pihole.toml hosts array instead of custom.list.
Updated playbook to modify toml config directly via Python script.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

playbooks/pihole-dns.yml

@@ -1,5 +1,5 @@
 ---
-- name: Configure Pi-hole local DNS records
+- name: Configure Pi-hole v6 local DNS records
   hosts: pihole
   vars:
     dns_domain: lab.directlx.dev
@@ -22,16 +22,25 @@
       - { ip: "192.168.200.61", hostname: "odoo" }
 
   tasks:
-    - name: Create Pi-hole custom DNS records
+    - name: Copy DNS update script
       ansible.builtin.template:
-        src: ../templates/pihole-custom-list.j2
-        dest: /etc/pihole/custom.list
-        owner: root
-        group: root
-        mode: '0644'
-      notify: Restart pihole dns
+        src: ../templates/pihole-hosts.py.j2
+        dest: /tmp/update_pihole_hosts.py
+        mode: '0755'
+
+    - name: Update Pi-hole DNS hosts
+      ansible.builtin.command: python3 /tmp/update_pihole_hosts.py
+      register: update_result
+      changed_when: "'updated' in update_result.stdout.lower()"
+      notify: Restart pihole-FTL
+
+    - name: Cleanup script
+      ansible.builtin.file:
+        path: /tmp/update_pihole_hosts.py
+        state: absent
 
   handlers:
-    - name: Restart pihole dns
-      ansible.builtin.command: pihole restartdns
-      changed_when: true
+    - name: Restart pihole-FTL
+      ansible.builtin.systemd:
+        name: pihole-FTL
+        state: restarted

templates/pihole-hosts.py.j2

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+# Update Pi-hole v6 hosts in pihole.toml
+import re
+
+hosts = '''
+{% for record in dns_records %}
+    "{{ record.ip }} {{ record.hostname }}.{{ dns_domain }} {{ record.hostname }}",
+{% endfor %}
+'''
+
+with open('/etc/pihole/pihole.toml', 'r') as f:
+    content = f.read()
+
+# Find and replace hosts array
+pattern = r'hosts = \[.*?\]'
+replacement = f'hosts = [{hosts}  ]'
+content = re.sub(pattern, replacement, content, flags=re.DOTALL)
+
+with open('/etc/pihole/pihole.toml', 'w') as f:
+    f.write(content)
+
+print('Pi-hole DNS hosts updated')