✨: add nsd role

roles/nsd/tasks/main.yml

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+---
+
+- name: Install & check prerequisites
+  ansible.builtin.include_tasks: prerequisites.yml
+
+- name: Create slave group
+  ansible.builtin.group_by:
+    key: slave_nsdservers
+  when: not nsd_master
+
+- name: Create master group
+  ansible.builtin.group_by:
+    key: master_nsdservers
+  when: nsd_master
+
+- name: Create zone dir
+  ansible.builtin.file:
+    path: "{{ nsd_default_etc_path }}zones"
+    owner: root
+    group: root
+    mode: "0755"
+    state: directory
+
+- name: Create nsd.conf
+  ansible.builtin.template:
+    src: nsd.conf.j2
+    dest: "{{ nsd_default_etc_path }}nsd.conf"
+    owner: root
+    group: root
+    mode: "0640"
+  notify:
+    - Restart nsd
+
+- name: Create each zone in NSD
+  ansible.builtin.template:
+    src: zone.j2
+    dest: "{{ nsd_default_etc_path }}nsd.conf.d/{{ item }}.conf"
+    owner: root
+    group: root
+    mode: "0644"
+  loop: "{{ zones }}"
+  notify:
+    - Restart nsd
+
+- name: Force zone reload
+  ansible.builtin.meta: flush_handlers
+
+- name: Create zone and reload
+  ansible.builtin.include_tasks: zones.yml
+  loop: "{{ zones }}"
+  when: nsd_master
+
+- name: Ensure nsd is started
+  ansible.builtin.service:
+    name: nsd
+    state: started

roles/nsd/tasks/prerequisites.yml

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+---
+
+- name: Gather facts on listening ports
+  community.general.listen_ports_facts:
+
+- name: Detect systemd-resolve
+  ansible.builtin.set_fact:
+    _systemd_resolve_enable: "{{ ansible_facts.udp_listen | selectattr('port', 'eq', 53) | selectattr('name', 'eq', 'systemd-resolve') | count > 0 }}"
+
+- name: Deactivate DNS stublistener
+  ansible.builtin.lineinfile:
+    path: /etc/systemd/resolved.conf
+    regex: '^#DNSStubListener=yes'
+    line: DNSStubListener=no
+  when: _systemd_resolve_enable
+  notify:
+    - Restart systemd-resolved
+
+- name: Force restart for stub resolver
+  ansible.builtin.meta: flush_handlers
+
+- name: Install nsd & utilities
+  ansible.builtin.package:
+    name:
+      - nsd
+      - dnsutils
+      - ldnsutils
+    state: present

roles/nsd/tasks/zones.yml

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+---
+
+- name: Create zone file
+  ansible.builtin.template:
+    src: "{{ 'zones/parking.zone.j2' if item.parking | default(false) else 'zones/' ~ item.name ~ '.zone.j2' }}"
+    dest: "{{ nsd_default_etc_path }}zones/{{ item.name }}.zone"
+    owner: root
+    group: root
+    mode: "0644"
+  vars:
+    # This generates 99 different serial per day
+    dns_serial: "{{ ansible_date_time.year }}{{ ansible_date_time.month }}{{ ansible_date_time.day }}{{ ((ansible_date_time.hour | int * 3600 + ansible_date_time.minute | int * 60 + ansible_date_time.second | int) * 99 / 86400) | int }}"
+
+- name: Force zone file modification time
+  ansible.builtin.file:
+    path: "{{ nsd_default_etc_path }}zones/{{ item.name }}.zone"
+    state: touch
+    mode: "0644"
+
+- name: Check zone file
+  ansible.builtin.command:
+    cmd: "nsd-checkzone {{ item.name }} {{ nsd_default_etc_path }}zones/{{ item.name }}.zone"
+  changed_when: false
+
+- name: Reload zone
+  ansible.builtin.command:
+    cmd: "nsd-control reload {{ item.name }}"
+  changed_when: false