[monitoring] add node_exporter

playbook.yml

@@ -18,3 +18,4 @@
       tags:
         - docker
     - role: wireguard
+    - role: monitoring

roles/monitoring/handlers/main.yml

@@ -0,0 +1,5 @@
+---
+- name: restart-node-exporter
+  systemd:
+    name: prometheus-node-exporter
+    state: restarted

roles/monitoring/tasks/main.yml

@@ -0,0 +1,7 @@
+---
+- block:
+  - import_tasks: node_exporter.yml
+    tags:
+      - monitoring:node_exporter
+  tags:
+    - monitoring

roles/monitoring/tasks/node_exporter.yml

@@ -0,0 +1,12 @@
+---
+- name: install prometheus node exporter
+  apt:
+    name: prometheus-node-exporter
+    state: present
+
+- name: set node exporter config
+  lineinfile:
+    path: /etc/default/prometheus-node-exporter
+    regexp: '^ARGS='
+    line: ARGS="--web.listen-address=10.80.0.2:9100"
+  notify: restart-node-exporter