add dnsmasq role

.ansible-lint

@@ -7,3 +7,4 @@ loop_var_prefix: "^(__|{role}_)"
 
 exclude_paths:
   - .github/
+  - .ansible/

roles/dnsmasq/.ansible-lint

@@ -0,0 +1,16 @@
+---
+profile: production
+strict: true
+
+# Enable checking of loop variable prefixes in roles
+loop_var_prefix: "^(__|{role}_)"
+
+skip_list:
+  - var-naming[no-role-prefix]
+
+warn_list:
+  - role-name[path]
+  - var-naming[no-role-prefix]
+
+exclude_paths:
+  - .github/

roles/dnsmasq/.gitignore

@@ -0,0 +1,2 @@
+.vscode
+.idea

roles/dnsmasq/.yamllint

@@ -0,0 +1,8 @@
+---
+rules:
+  brackets:
+    forbid: false
+    min-spaces-inside: 0
+    max-spaces-inside: 2
+    min-spaces-inside-empty: -1
+    max-spaces-inside-empty: 2

roles/dnsmasq/README.md

@@ -0,0 +1,37 @@
+ansible-dnsmasq
+=========
+
+Deploy dnsmasq on the target node. For now, supports only DNS functionality (DHCP and TFTP are not configuratble).
+
+Requirements
+------------
+
+Take care to open the port you choose for dnsmasq to serve queries on. This role does not handle firewall configuration. 
+
+Role Variables
+--------------
+
+None
+
+Dependencies
+------------
+
+None
+
+Example Playbook
+----------------
+
+```yaml
+roles:
+    - role: genlab.dnsmasq
+```
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+corvus-migratorius@proton.me

roles/dnsmasq/conda.dev.yml

@@ -0,0 +1,11 @@
+---
+name: ansible-dnsmasq
+channels:
+  - conda-forge
+dependencies:
+  - python~=3.12.0
+  - pip>=24.2
+  - actionlint
+  - pip:
+      - -r requirements.txt
+      - -r requirements.ci.txt

roles/dnsmasq/conda.prod.yml

@@ -0,0 +1,9 @@
+---
+name: ansible-dnsmasq
+channels:
+  - conda-forge
+dependencies:
+  - python~=3.12.0
+  - pip>=24.2
+  - pip:
+      - -r requirements.txt

roles/dnsmasq/defaults/main.yml

@@ -0,0 +1,3 @@
+---
+cache_size: 100
+dns_port: 5300

roles/dnsmasq/handlers/main.yml

@@ -0,0 +1,7 @@
+---
+- name: "Restart dnsmasq"
+  ansible.builtin.systemd_service:
+    name: dnsmasq
+    state: restarted
+    daemon_reload: true
+    enabled: true

roles/dnsmasq/meta/main.yml

@@ -0,0 +1,17 @@
+---
+galaxy_info:
+  role_name: dnsmasq
+  namespace: genlab
+  author: "Alexander Gorelyshev"
+  company: "Genlab, LLC"
+  description: ""
+  license: "MIT"
+  min_ansible_version: "2.1"
+
+  platforms:
+    - name: "Ubuntu"
+      versions: [ "focal", "jammy" ]
+
+  galaxy_tags: [ ]
+
+dependencies: []

roles/dnsmasq/molecule/default/converge.yml

@@ -0,0 +1,21 @@
+---
+- name: Converge
+  hosts: all
+  roles:
+    - role: genlab.ufw
+      disable_ipv6: true
+      rules:
+        - rule: allow
+          # proto: udp
+          port: 5300
+          interface: lo
+          direction: in
+          comment: "Allow dnsmasq to serve DNS queries on the given interface"
+
+    - role: genlab.dnsmasq
+      iface: lo
+      domain: adm.local
+      dns_port: 5300
+      nodes:
+        - name: hub
+          ip: 127.0.0.1

roles/dnsmasq/molecule/default/molecule.yml

@@ -0,0 +1,27 @@
+---
+dependency:
+  name: galaxy
+
+driver:
+  name: docker
+
+platforms:
+  - name: ubuntu
+    image: geerlingguy/docker-${MOLECULE_DISTRO:-ubuntu2204}-ansible:latest
+    pre_build_image: true
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:rw
+    cgroupns_mode: host
+    privileged: true
+
+provisioner:
+  name: ansible
+
+verifier:
+  name: ansible
+
+lint: |
+  set -e
+  yamllint .
+  ansible-lint .

roles/dnsmasq/molecule/default/verify.yml

@@ -0,0 +1,19 @@
+---
+- name: Verify
+  hosts: all
+  gather_facts: false
+  any_errors_fatal: true
+
+  pre_tasks:
+    - name: "Install a package providing the `dig` tool"
+      ansible.builtin.apt:
+        name: dnsutils
+        state: present
+
+  tasks:
+    - name: "Test the output of the `dig` command"
+      changed_when: false
+      register: dig
+      failed_when: 'dig.stdout != "127.0.0.1"'
+      ansible.builtin.command:
+        cmd: "dig @127.0.0.1 -p 5353 hub.adm.vpn +short"

roles/dnsmasq/renovate.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ]
+}

roles/dnsmasq/requirements.ci.txt

@@ -0,0 +1,6 @@
+ansible-lint
+molecule==24.12.0
+molecule-plugins[docker]
+docker~=7.1.0
+requests==2.31.0  # pinned to the latest version not breaking Docker SDK
+yamllint

roles/dnsmasq/requirements.txt

@@ -0,0 +1 @@
+ansible~=11.1.0

roles/dnsmasq/requirements.yml

@@ -0,0 +1,5 @@
+# requirements file
+---
+roles:
+  - name: genlab.ufw
+    src: https://github.com/corvus-migratorius/ansible-ufw.git

roles/dnsmasq/tasks/main.yml

@@ -0,0 +1,38 @@
+---
+- name: "Install dnsmasq"
+  ansible.builtin.apt:
+    name: dnsmasq
+    state: present
+    update_cache: true
+
+
+- name: "Create interface-specific configuration file"
+  notify: "Restart dnsmasq"
+  ansible.builtin.blockinfile:
+    path: /etc/dnsmasq.d/{{ domain }}.conf
+    create: true
+    owner: root
+    group: root
+    mode: "0660"
+    block: |
+      interface="{{ iface }}"
+      port="{{ dns_port }}"
+      cache-size="{{ cache_size }}"
+      log-queries
+      server=1.1.1.1   # Cloudflare DNS
+      server=8.8.8.8   # Google DNS
+      server=8.8.4.4   # Google DNS (secondary)
+
+
+- name: "Add nodes to the configuration file"
+  notify: "Restart dnsmasq"
+  loop: "{{ nodes }}"
+  ansible.builtin.blockinfile:
+    path: /etc/dnsmasq.d/{{ domain }}.conf
+    marker: "# {mark} ANSIBLE MANAGED: {{ item.name }}.{{ domain }}"
+    block: |
+      address=/{{ item.name }}.{{ domain }}/{{ item.ip }}
+
+
+- name: "Flush handlers"
+  ansible.builtin.meta: flush_handlers

roles/dnsmasq/vars/main.yml

@@ -0,0 +1 @@
+---