install pihole to fix failing duckdns name servers

ansible/arcodange/factory/inventory/hosts.yml

@@ -42,6 +42,11 @@ gitea:
   children:
     postgres:
 
+pihole:
+  hosts:
+    pi1:
+    pi3:
+
 all:
   children:
     raspberries:

ansible/arcodange/factory/playbooks/06_dns.yml

@@ -0,0 +1,3 @@
+---
+- name: dns
+  ansible.builtin.import_playbook: ./dns/dns.yml

ansible/arcodange/factory/playbooks/dns/dns.yml

@@ -0,0 +1,2 @@
+- name: pihole
+  ansible.builtin.import_playbook: pihole.yml

ansible/arcodange/factory/playbooks/dns/pihole.yml

@@ -0,0 +1,213 @@
+---
+- name: Installer et configurer Pi-hole sur pi1
+  hosts: raspberries:&local #pihole # change with pihole group
+  become: yes
+  vars:
+
+    pihole_custom_dns:
+      ".arcodange.duckdns.org": "{{ hostvars['pi1'].preferred_ip }}"
+  roles:
+    - pihole
+
+  # tasks:
+
+    # - name: Proposer la commande d'installation manuelle de Pi-hole
+    #   debug:
+    #     msg: |
+    #       Veuillez installer Pi-hole manuellement sur ce host avec la commande suivante :
+    #       # curl -sSL https://install.pi-hole.net | sudo bash
+    #       L'installation sera vérifiée automatiquement dans les 10 prochaines minutes.
+    
+    # - name: Attendre que Pi-hole soit installé (vérification service et fichier config)
+    #   wait_for:
+    #     path: /etc/pihole/pihole-FTL.db
+    #     state: present
+    #     timeout: 600  # 10 minutes
+    #   register: pihole_config_ready
+
+    # - name: Vérifier que le service pihole-FTL est actif
+    #   wait_for:
+    #     port: 53   # port interne par défaut Pi-hole
+    #     state: started
+    #     timeout: 60
+    #   when: pihole_config_ready is succeeded
+
+    # - name: Modifier le fichier /etc/pihole/pihole.toml pour changer le port
+    #   replace:
+    #     path: /etc/pihole/pihole.toml
+    #     regexp: '^\s*port\s*=\s*".*"'
+    #     replace: '  port = "{{ pihole_ports }}"'
+    
+    # - name: Modifier le fichier /etc/pihole/pihole.toml pour autoriser toutes les origines DNS
+    #   replace:
+    #     path: /etc/pihole/pihole.toml
+    #     regexp: '^\s*listeningMode\s*=\s*".*"'
+    #     replace: '  listeningMode = "ALL"'
+
+    # - name: Activer le chargement des fichiers /etc/dnsmasq.d/ dans Pi-hole
+    #   lineinfile:
+    #     path: /etc/pihole/pihole.toml
+    #     regexp: '^\s*etc_dnsmasq_d\s*='
+    #     line: '  etc_dnsmasq_d = true'
+    #     state: present
+    #     create: yes
+
+    # - name: Créer le fichier dnsmasq pour le wildcard
+    #   copy:
+    #     dest: /etc/dnsmasq.d/10-arcodange-wildcard.conf
+    #     content: |
+    #       address=/{{ pihole_wildcard_rule }}/{{ pihole_dns_ip }}
+    #     owner: root
+    #     group: root
+    #     mode: '0644'
+    
+    # - name: Créer les entrées DNS locales pour les RPis (pi*.home)
+    #   copy:
+    #     dest: /etc/dnsmasq.d/20-rpis.conf
+    #     owner: root
+    #     group: root
+    #     mode: '0644'
+    #     content: |
+    #       # Generated by Ansible – Raspberry Pi local DNS
+    #       {% for host in groups['raspberries']
+    #         if host is match('^pi[0-9]+$')
+    #         and hostvars[host].preferred_ip is defined %}
+    #       address=/{{ host }}.home/{{ hostvars[host].preferred_ip }}
+    #       {% endfor %}
+
+    # - name: Configurer resolv.conf pour DNS croisé
+    #   copy:
+    #     dest: /etc/resolv.conf
+    #     owner: root
+    #     group: root
+    #     mode: '0644'
+    #     content: |
+    #       {% if inventory_hostname == 'pi1' %}
+    #       nameserver {{ hostvars['pi3'].preferred_ip }}
+    #       {% elif inventory_hostname == 'pi3' %}
+    #       nameserver {{ hostvars['pi1'].preferred_ip }}
+    #       {% endif %}
+
+    # - name: Redémarrer le service Pi-hole FTL
+    #   service:
+    #     name: pihole-FTL
+    #     state: restarted
+
+
+# ############################################################
+# # 2. Configuration DNS des Raspberry Pi clients
+# ############################################################
+# - name: Configurer Docker via systemd override (DNS Pi-hole)
+#   hosts: raspberries:&local
+#   become: yes
+
+#   vars:
+#     docker_dns_servers:
+#       - "{{ hostvars['pi1']['preferred_ip'] }}"
+#       - "8.8.8.8"
+#       - "1.1.1.1"
+
+#     docker_override_dir: /etc/systemd/system/docker.service.d
+#     docker_override_file: /etc/systemd/system/docker.service.d/override.conf
+
+#   tasks:
+
+#     - name: Créer le dossier systemd override pour Docker
+#       file:
+#         path: "{{ docker_override_dir }}"
+#         state: directory
+#         owner: root
+#         group: root
+#         mode: '0755'
+#       tags: docker, override
+
+#     - name: Déployer l'override systemd pour dockerd (DNS + IPv4 only)
+#       copy:
+#         dest: "{{ docker_override_file }}"
+#         owner: root
+#         group: root
+#         mode: '0644'
+#         content: |
+#           [Service]
+#           ExecStart=
+#           ExecStart=/usr/bin/dockerd \
+#             -H fd:// \
+#             --containerd=/run/containerd/containerd.sock \
+#           {% for dns in docker_dns_servers %}
+#                       --dns={{ dns }} \
+#           {% endfor %}
+#                       --ipv6=false
+#       notify:
+#         - Reexec systemd
+#         - Restart Docker
+#         - Restart k3s
+#       tags: docker, override
+
+#     # -------- ROLLBACK --------
+
+#     - name: Rollback - Supprimer l'override systemd Docker
+#       file:
+#         path: "{{ docker_override_file }}"
+#         state: absent
+#       notify:
+#         - Reexec systemd
+#         - Restart Docker
+#         - Restart k3s
+#       when: "'rollbacks' in ansible_run_tags"
+
+#   handlers:
+
+#     - name: Reexec systemd
+#       command: systemctl daemon-reexec
+
+#     - name: Restart Docker
+#       service:
+#         name: docker
+#         state: restarted
+
+#     - name: Restart k3s
+#       service:
+#         name: k3s
+#         state: restarted
+#       ignore_errors: yes
+
+#     - name: Restart k3s-agent
+#       service:
+#         name: k3s-agent
+#         state: restarted
+#       ignore_errors: yes
+
+
+## 3 configurer traefik
+
+# apiVersion: v1
+# kind: Service
+# metadata:
+#   name: pihole-external
+#   namespace: kube-system
+# spec:
+#   type: ExternalName
+#   externalName: {{ hostvars[groups.pihole[0]]['preferred_ip'] }}
+#   ports:
+#     - port: 3000
+#       targetPort: 3000
+# ---
+# apiVersion: traefik.io/v1alpha1
+# kind: IngressRoute
+# metadata:
+#   name: pihole
+#   namespace: kube-system
+# spec:
+#   entryPoints:
+#     - web
+#   routes:
+#     - match: Host(`gitea.arcodange.fr`)
+#       kind: Rule
+#       middlewares:
+#         - name: crowdsec
+#           namespace: kube-system
+#       services:
+#         - kind: Service
+#           name: gitea-external
+#           namespace: kube-system
+#           port: 3000

ansible/arcodange/factory/playbooks/dns/roles/pihole/defaults/main.yml

@@ -0,0 +1,7 @@
+pihole_primary: pi1
+pihole_user_gravity: pihole_gravity
+pihole_gravity_home: /var/lib/pihole_gravity
+pihole_dns_domain: lab
+pihole_ports: '8081o,443os,[::]:8081o,[::]:443os' # web interface
+pihole_gravity_conf: /etc/gravity-sync/gravity-sync.conf # should not be changed
+pihole_custom_dns: {}

ansible/arcodange/factory/playbooks/dns/roles/pihole/handlers/main.yml

@@ -0,0 +1,5 @@
+---
+- name: Restart Pi-hole
+  service:
+    name: pihole-FTL
+    state: restarted

ansible/arcodange/factory/playbooks/dns/roles/pihole/tasks/client_setup.yml

@@ -0,0 +1,27 @@
+---
+- name: Build DNS server list (exclude self)
+  set_fact:
+    pihole_dns_servers: >-
+      {{
+        groups['pihole']
+        | reject('equalto', inventory_hostname)
+        | map('extract', hostvars, 'preferred_ip')
+        | list
+      }}
+
+# 1️⃣ Supprimer d’éventuelles anciennes entrées Pi-hole
+- name: Remove existing Pi-hole nameservers
+  lineinfile:
+    path: /etc/resolv.conf
+    regexp: '^nameserver ({{ pihole_dns_servers | join("|") }})$'
+    state: absent
+  when: pihole_dns_servers | length > 0
+
+# 2️⃣ Insérer les Pi-hole juste après la ligne search
+- name: Insert Pi-hole nameservers with priority
+  lineinfile:
+    path: /etc/resolv.conf
+    insertafter: '^search'
+    line: "nameserver {{ item }}"
+    state: present
+  loop: "{{ pihole_dns_servers }}"

ansible/arcodange/factory/playbooks/dns/roles/pihole/tasks/gravity_setup.yml

@@ -0,0 +1,153 @@
+---
+# -------------------------------------------------------------------
+# Gravity Sync HA setup – final version with SSH key rotation
+# -------------------------------------------------------------------
+
+- name: Determine primary Pi-hole
+  set_fact:
+    pihole_primary: "{{ groups['pihole'] | first }}"
+
+- name: Set secondary Pi-hole hosts
+  set_fact:
+    pihole_secondaries: "{{ groups['pihole'] | difference([pihole_primary]) }}"
+
+#################################################################
+# 1️⃣ Ensure gravity user exists on all Pi-hole nodes
+#################################################################
+
+- name: Ensure gravity user exists
+  user:
+    name: "{{ pihole_user_gravity }}"
+    home: "{{ pihole_gravity_home }}"
+    shell: /bin/bash
+    system: yes
+    create_home: yes
+
+- name: Create .ssh directory for gravity user
+  file:
+    path: "{{ pihole_gravity_home }}/.ssh"
+    state: directory
+    owner: "{{ pihole_user_gravity }}"
+    group: "{{ pihole_user_gravity }}"
+    mode: '0700'
+
+#################################################################
+# 2️⃣ Generate SSH key for each host (rotation at each run)
+#################################################################
+
+- name: Generate SSH keypair for gravity user
+  openssh_keypair:
+    path: "{{ pihole_gravity_home }}/.ssh/id_ed25519"
+    type: ed25519
+    owner: "{{ pihole_user_gravity }}"
+    group: "{{ pihole_user_gravity }}"
+    mode: '0600'
+  register: gravity_key
+  no_log: true
+
+- name: Set gravity key in hostvars
+  set_fact:
+    gravity_pubkey: "{{ gravity_key.public_key }}"
+
+- name: Clean authorized_keys for gravity user
+  file:
+    path: "{{ pihole_gravity_home }}/.ssh/authorized_keys"
+    state: absent
+
+- name: Authorize SSH keys from other Pi-hole hosts
+  authorized_key:
+    user: "{{ pihole_user_gravity }}"
+    key: "{{ hostvars[item].gravity_pubkey }}"
+    state: present
+  loop: "{{ groups['pihole'] }}"
+  when: inventory_hostname != item
+
+- name: Add all Pi-hole hosts to known_hosts
+  known_hosts:
+    path: "{{ pihole_gravity_home }}/.ssh/known_hosts"
+    name: "{{ item }}"
+    key: "{{ lookup('pipe', 'ssh-keyscan -t ed25519 ' ~ item) }}"
+    state: present
+  loop: "{{ groups['pihole'] }}"
+  when: inventory_hostname != item
+  become: yes
+  become_user: "{{ pihole_user_gravity }}"
+
+#################################################################
+# Install Gravity Sync binary if absent
+#################################################################
+
+- name: Check if Gravity Sync binary exists
+  stat:
+    path: /usr/local/bin/gravity-sync
+  register: gravity_sync_bin
+
+- name: Download installer
+  get_url:
+    url: https://raw.githubusercontent.com/vmstan/gs-install/main/gs-install.sh
+    dest: /tmp/gs-install.sh
+    mode: '0755'
+  when: not gravity_sync_bin.stat.exists
+
+- name: Give full sudo to gravity user
+  copy:
+    dest: /etc/sudoers.d/gravity-sync
+    mode: '0440'
+    content: "{{ pihole_user_gravity }} ALL=(ALL) NOPASSWD: ALL"
+  when: not gravity_sync_bin.stat.exists
+
+- name: Execute Gravity Sync installer non-interactively
+  command: bash /tmp/gs-install.sh
+  become: yes
+  become_user: "{{ pihole_user_gravity }}"
+  environment:
+    HOME: "{{ pihole_gravity_home }}"
+  when: not gravity_sync_bin.stat.exists
+
+#################################################################
+# Generate gravity-sync.conf for non-interactive use
+#################################################################
+
+- name: Set remote host for gravity-sync.conf
+  set_fact:
+    remote_pihole: "{{ (inventory_hostname == pihole_primary) | ternary(pihole_secondaries[0] ~ '.home', pihole_primary ~ '.home') }}"
+
+- name: Create gravity-sync.conf file
+  copy:
+    dest: "{{ pihole_gravity_conf }}"
+    owner: "{{ pihole_user_gravity }}"
+    group: "{{ pihole_user_gravity }}"
+    mode: '0600'
+    content: |
+      # REQUIRED SETTINGS
+      REMOTE_HOST='{{ remote_pihole }}'
+      REMOTE_USER='{{ pihole_user_gravity }}'
+
+      # CUSTOM VARIABLES
+      # LOCAL_PIHOLE_DIRECTORY='/etc/pihole'
+      # REMOTE_PIHOLE_DIRECTORY='/etc/pihole'
+      # LOCAL_FILE_OWNER='{{ pihole_user_gravity }}'
+      # REMOTE_FILE_OWNER='{{ pihole_user_gravity }}'
+
+      # LOCAL_DOCKER_CONTAINER=''    # optional
+      # REMOTE_DOCKER_CONTAINER=''   # optional
+
+- name: Create symlink for gravity-sync.rsa
+  file:
+    src: "{{ pihole_gravity_home }}/.ssh/id_ed25519"
+    dest: /etc/gravity-sync/gravity-sync.rsa
+    owner: "{{ pihole_user_gravity }}"
+    group: "{{ pihole_user_gravity }}"
+    mode: '0600'
+    state: link
+
+#################################################################
+# Execute Gravity Sync with non-interactive config
+#################################################################
+
+- name: Run Gravity Sync script
+  command: bash /usr/local/bin/gravity-sync
+  become: yes
+  become_user: "{{ pihole_user_gravity }}"
+  environment:
+    HOME: "{{ pihole_gravity_home }}"

ansible/arcodange/factory/playbooks/dns/roles/pihole/tasks/ha_pihole_setup.yml

@@ -0,0 +1,100 @@
+#################################################################
+# Bootstrap Pi-hole (installation manuelle attendue)
+#################################################################
+
+- name: Proposer la commande d'installation manuelle de Pi-hole
+  debug:
+    msg: |
+      Veuillez installer Pi-hole manuellement sur ce host avec la commande suivante :
+      ------------------------------------------------------------
+      curl -sSL https://install.pi-hole.net | sudo bash
+      ------------------------------------------------------------
+      L'installation sera vérifiée automatiquement dans les 10 prochaines minutes.
+
+#################################################################
+# Vérification installation Pi-hole
+#################################################################
+
+- name: Attendre que Pi-hole soit installé (FTL DB)
+  wait_for:
+    path: /etc/pihole/pihole-FTL.db
+    state: present
+    timeout: 600   # 10 minutes
+  register: pihole_config_ready
+
+- name: Vérifier que le service pihole-FTL est actif
+  wait_for:
+    port: 53
+    state: started
+    timeout: 60
+  when: pihole_config_ready is succeeded
+
+#################################################################
+# Configuration Pi-hole (commune HA)
+#################################################################
+
+- name: Modifier le port d'écoute Pi-hole
+  replace:
+    path: /etc/pihole/pihole.toml
+    regexp: '^\s*port\s*=\s*".*"'
+    replace: '  port = "{{ pihole_ports }}"'
+  notify: Restart Pi-hole
+
+- name: Autoriser Pi-hole à écouter sur toutes les interfaces
+  replace:
+    path: /etc/pihole/pihole.toml
+    regexp: '^\s*listeningMode\s*=\s*".*"'
+    replace: '  listeningMode = "ALL"'
+  notify: Restart Pi-hole
+
+- name: Activer le chargement de /etc/dnsmasq.d
+  lineinfile:
+    path: /etc/pihole/pihole.toml
+    regexp: '^\s*etc_dnsmasq_d\s*='
+    line: '  etc_dnsmasq_d = true'
+    state: present
+  notify: Restart Pi-hole
+
+#################################################################
+# DNS custom (wildcard + locaux)
+#################################################################
+
+- name: Validate custom DNS IPs
+  assert:
+    that:
+      - ip is match('^([0-9]{1,3}\.){3}[0-9]{1,3}$')
+    fail_msg: "Invalid IP for {{ fqdn }}"
+  loop: "{{ pihole_custom_dns | dict2items }}"
+  loop_control:
+    label: "{{ item.key }}"
+  vars:
+    fqdn: "{{ item.key }}"
+    ip: "{{ item.value }}"
+
+- name: Générer les règles DNS custom (wildcards + FQDN)
+  copy:
+    dest: /etc/dnsmasq.d/10-custom-rules.conf
+    owner: root
+    group: root
+    mode: '0644'
+    content: |
+      # Generated by Ansible – Pi-hole custom DNS rules
+      {% for fqdn, ip in pihole_custom_dns.items() %}
+      address=/{{ fqdn }}/{{ ip }}
+      {% endfor %}
+  when: pihole_custom_dns | length > 0
+  notify: Restart Pi-hole
+
+- name: Créer les entrées DNS locales pour les RPis
+  copy:
+    dest: /etc/dnsmasq.d/20-rpis.conf
+    owner: root
+    group: root
+    mode: '0644'
+    content: |
+      # Generated by Ansible – Raspberry Pi local DNS
+      {% for host in groups['raspberries']
+         if hostvars[host].preferred_ip is defined %}
+      address=/{{ host }}.home/{{ hostvars[host].preferred_ip }}
+      {% endfor %}
+  notify: Restart Pi-hole

ansible/arcodange/factory/playbooks/dns/roles/pihole/tasks/main.yml

@@ -0,0 +1,11 @@
+---
+- name: Setup Pi-hole HA
+  include_tasks: ha_pihole_setup.yml
+  when: "'pihole' in group_names"
+
+- name: Setup Gravity Sync
+  include_tasks: gravity_setup.yml
+  when: "'pihole' in group_names"
+
+- name: Setup DNS client
+  include_tasks: client_setup.yml

ansible/requirements.yml

@@ -3,8 +3,9 @@ roles:
 - name: geerlingguy.docker
 
 collections:
-- name: community.general
-- name: community.docker
 - name: ansible.posix
+- name: community.crypto
+- name: community.docker
+- name: community.general
 - name: kubernetes.core
 - name: git+https://github.com/k3s-io/k3s-ansible.git