From a61eec647a90d1cf4584aca16a591e25056fbcb2 Mon Sep 17 00:00:00 2001
From: Ahmed Abdelhalim <pm@a14m.dev>
Date: Mon, 2 Mar 2026 22:39:33 +0100
Subject: Create specific prometheus node exporter role

---
 roles/prometheus-node-exporter/defaults/main.yml  |  3 +++
 roles/prometheus-node-exporter/handlers/main.yml  |  6 +++++
 roles/prometheus-node-exporter/meta/main.yml      | 17 ++++++++++++++
 roles/prometheus-node-exporter/tasks/main.yml     | 28 +++++++++++++++++++++++
 roles/prometheus-node-exporter/vars/archlinux.yml |  2 ++
 roles/prometheus-node-exporter/vars/debian.yml    |  2 ++
 6 files changed, 58 insertions(+)
 create mode 100644 roles/prometheus-node-exporter/defaults/main.yml
 create mode 100644 roles/prometheus-node-exporter/handlers/main.yml
 create mode 100644 roles/prometheus-node-exporter/meta/main.yml
 create mode 100644 roles/prometheus-node-exporter/tasks/main.yml
 create mode 100644 roles/prometheus-node-exporter/vars/archlinux.yml
 create mode 100644 roles/prometheus-node-exporter/vars/debian.yml

(limited to 'roles/prometheus-node-exporter')

diff --git a/roles/prometheus-node-exporter/defaults/main.yml b/roles/prometheus-node-exporter/defaults/main.yml
new file mode 100644
index 00000000..d15999f0
--- /dev/null
+++ b/roles/prometheus-node-exporter/defaults/main.yml
@@ -0,0 +1,3 @@
+---
+node_exporter_host: "0.0.0.0"
+node_exporter_port: 9100
diff --git a/roles/prometheus-node-exporter/handlers/main.yml b/roles/prometheus-node-exporter/handlers/main.yml
new file mode 100644
index 00000000..4e995e59
--- /dev/null
+++ b/roles/prometheus-node-exporter/handlers/main.yml
@@ -0,0 +1,6 @@
+---
+- name: "Restart node-exporter"
+  become: true
+  ansible.builtin.systemd_service:
+    name: "prometheus-node-exporter"
+    state: "restarted"
diff --git a/roles/prometheus-node-exporter/meta/main.yml b/roles/prometheus-node-exporter/meta/main.yml
new file mode 100644
index 00000000..c94a573a
--- /dev/null
+++ b/roles/prometheus-node-exporter/meta/main.yml
@@ -0,0 +1,17 @@
+---
+dependencies: []
+galaxy_info:
+  author: "a14m"
+  description: "Install and configure Prometheus node exporter"
+  license: "MIT"
+  min_ansible_version: "2.18"
+  platforms:
+    - name: "ArchLinux"
+      versions:
+        - "all"
+    - name: "Ubuntu"
+      versions:
+        - "noble"
+    - name: "Debian"
+      versions:
+        - "bookworm"
diff --git a/roles/prometheus-node-exporter/tasks/main.yml b/roles/prometheus-node-exporter/tasks/main.yml
new file mode 100644
index 00000000..dc222e3e
--- /dev/null
+++ b/roles/prometheus-node-exporter/tasks/main.yml
@@ -0,0 +1,28 @@
+---
+- name: "Include OS-specific variables"
+  ansible.builtin.include_vars: "{{ ansible_facts['os_family'] | lower }}.yml"
+
+- name: "Ensure prometheus-node-exporter is installed"
+  become: true
+  ansible.builtin.package:
+    name: "prometheus-node-exporter"
+    state: "present"
+
+- name: "Configure node-exporter host/port via environment file"
+  become: true
+  ansible.builtin.copy:
+    content: |
+      NODE_EXPORTER_ARGS="
+        --web.listen-address={{ node_exporter_host }}:{{ node_exporter_port }}
+        --collector.systemd
+      "
+    dest: "{{ node_exporter_env_file }}"
+    mode: "0644"
+  notify: "Restart node-exporter"
+
+- name: "Start and enable prometheus-node-exporter"
+  become: true
+  ansible.builtin.systemd_service:
+    name: "prometheus-node-exporter"
+    state: "started"
+    enabled: true
diff --git a/roles/prometheus-node-exporter/vars/archlinux.yml b/roles/prometheus-node-exporter/vars/archlinux.yml
new file mode 100644
index 00000000..e550c5da
--- /dev/null
+++ b/roles/prometheus-node-exporter/vars/archlinux.yml
@@ -0,0 +1,2 @@
+---
+node_exporter_env_file: "/etc/conf.d/prometheus-node-exporter"
diff --git a/roles/prometheus-node-exporter/vars/debian.yml b/roles/prometheus-node-exporter/vars/debian.yml
new file mode 100644
index 00000000..dc59b0d6
--- /dev/null
+++ b/roles/prometheus-node-exporter/vars/debian.yml
@@ -0,0 +1,2 @@
+---
+node_exporter_env_file: "/etc/default/prometheus-node-exporter"
-- 
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