From f4b1ae92c2ec6359823aaf0941a32f19f95b4f43 Mon Sep 17 00:00:00 2001
From: darnodo <sepales.pret0h@icloud.com>
Date: Sat, 21 Jun 2025 08:28:10 +0200
Subject: [PATCH] ansible : install dnsmasq_exporter

---
 ansible/playbooks/setup_dns_server.yml        |  1 +
 ansible/playbooks/update_dns_records.yml      |  1 +
 .../roles/dnsmasq_exporter/handlers/main.yml  | 10 ++++
 ansible/roles/dnsmasq_exporter/tasks/main.yml | 56 +++++++++++++++++++
 .../templates/dnsmasq_exporter.service.j2     | 13 +++++
 5 files changed, 81 insertions(+)
 create mode 100644 ansible/roles/dnsmasq_exporter/handlers/main.yml
 create mode 100644 ansible/roles/dnsmasq_exporter/tasks/main.yml
 create mode 100644 ansible/roles/dnsmasq_exporter/templates/dnsmasq_exporter.service.j2

diff --git a/ansible/playbooks/setup_dns_server.yml b/ansible/playbooks/setup_dns_server.yml
index 930a444..76d2c23 100644
--- a/ansible/playbooks/setup_dns_server.yml
+++ b/ansible/playbooks/setup_dns_server.yml
@@ -12,3 +12,4 @@
   become: true
   roles:
     - role: dns_server
+    - role: dnsmasq_exporter
diff --git a/ansible/playbooks/update_dns_records.yml b/ansible/playbooks/update_dns_records.yml
index e377cb7..d31cb4f 100644
--- a/ansible/playbooks/update_dns_records.yml
+++ b/ansible/playbooks/update_dns_records.yml
@@ -13,3 +13,4 @@
   become: true
   roles:
     - role: dns_server
+    - role: dnsmasq_exporter
diff --git a/ansible/roles/dnsmasq_exporter/handlers/main.yml b/ansible/roles/dnsmasq_exporter/handlers/main.yml
new file mode 100644
index 0000000..6f8e866
--- /dev/null
+++ b/ansible/roles/dnsmasq_exporter/handlers/main.yml
@@ -0,0 +1,10 @@
+---
+# ================================================================
+# Handlers for dnsmasq_exporter role
+# ================================================================
+
+- name: Reload systemd
+  ansible.builtin.systemd:
+    daemon_reload: true
+  become: true
+  listen: Reload systemd
diff --git a/ansible/roles/dnsmasq_exporter/tasks/main.yml b/ansible/roles/dnsmasq_exporter/tasks/main.yml
new file mode 100644
index 0000000..c122c12
--- /dev/null
+++ b/ansible/roles/dnsmasq_exporter/tasks/main.yml
@@ -0,0 +1,56 @@
+---
+# ================================================================
+# Rôle : dnsmasq_exporter
+# Tâches principales
+#
+# Objectif : Installer la dernière version de dnsmasq_exporter
+#            via `go install` et la lancer comme service systemd.
+#
+# Remarque : cette implémentation reste volontairement simple.
+#            - Aucune gestion fine de la version : toujours la « latest ».
+#            - Repose sur le paquet Debian/Ubuntu `golang`.
+#            - Le binaire est installé directement dans /usr/local/bin
+#              grâce à la variable d’environnement GOBIN.
+# ================================================================
+
+- name: "[dnsmasq_exporter] Dépendances build (golang, git)"
+  ansible.builtin.apt:
+    name:
+      - golang-go
+      - git
+    state: present
+    update_cache: true
+  tags:
+    - dnsmasq_exporter
+    - install
+
+- name: "[dnsmasq_exporter] Installation du binaire (go install @latest)"
+  ansible.builtin.command:
+    cmd: go install github.com/google/dnsmasq_exporter@latest
+    creates: /usr/local/bin/dnsmasq_exporter
+  environment:
+    GOBIN: /usr/local/bin
+  tags:
+    - dnsmasq_exporter
+    - build
+
+- name: "[dnsmasq_exporter] Déploiement du service systemd"
+  ansible.builtin.template:
+    src: dnsmasq_exporter.service.j2
+    dest: /etc/systemd/system/dnsmasq_exporter.service
+    owner: root
+    group: root
+    mode: "0644"
+  notify: Reload systemd
+  tags:
+    - dnsmasq_exporter
+    - config
+
+- name: "[dnsmasq_exporter] Activation et démarrage du service"
+  ansible.builtin.service:
+    name: dnsmasq_exporter
+    state: started
+    enabled: true
+  tags:
+    - dnsmasq_exporter
+    - service
diff --git a/ansible/roles/dnsmasq_exporter/templates/dnsmasq_exporter.service.j2 b/ansible/roles/dnsmasq_exporter/templates/dnsmasq_exporter.service.j2
new file mode 100644
index 0000000..b2ee28e
--- /dev/null
+++ b/ansible/roles/dnsmasq_exporter/templates/dnsmasq_exporter.service.j2
@@ -0,0 +1,13 @@
+[Unit]
+Description=Prometheus dnsmasq_exporter
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/dnsmasq_exporter
+Restart=on-failure
+RestartSec=5s
+
+[Install]
+WantedBy=multi-user.target