From 0d1a97a0d82d347761da6113686398f364ba04aa Mon Sep 17 00:00:00 2001
From: binary <me@rgoncalves.se>
Date: Sun, 22 Nov 2020 21:11:20 +0100
Subject: Add node exporter per-system.

---
 roles/prometheus/tasks/main.yml               | 19 ++++++++++++++++++
 roles/prometheus/templates/prometheus.conf.j2 | 28 +++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 roles/prometheus/templates/prometheus.conf.j2

diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
index aacdb65..ba5095b 100644
--- a/roles/prometheus/tasks/main.yml
+++ b/roles/prometheus/tasks/main.yml
@@ -7,5 +7,24 @@
 - name: install prometheus
   package: name=prometheus state=present
 
+- name: install node_exporter
+  package: name="{{ packages[os_distribution].node_exporter }}" state=present
+
+- name: generate prometheus configuration
+  template:
+    src: prometheus.conf.j2
+    dest: "{{ path_prometheusconfig }}"
+    owner: "{{ user_root }}"
+    group: "{{ group_root }}"
+    mode: 0644
+
 - name: ensure prometheus service is started and enabled
   service: name=prometheus state=restarted enabled=true
+
+- name: start and enable node_exporter
+  service: name=node_exporter state=restarted enabled=true
+  when: os_type == "bsd"
+
+- name: start and enable node_exporter
+  service: name=node-exporter state=restarted enabled=true
+  when: os_type != "bsd"
diff --git a/roles/prometheus/templates/prometheus.conf.j2 b/roles/prometheus/templates/prometheus.conf.j2
new file mode 100644
index 0000000..faf3581
--- /dev/null
+++ b/roles/prometheus/templates/prometheus.conf.j2
@@ -0,0 +1,28 @@
+
+# prometheus configuration ~~ {{ path_prometheusconfig }}
+# managed by Ansible
+
+global:
+  scrape_interval:     15s
+  evaluation_interval: 15s
+
+alerting:
+  alertmanagers:
+  - static_configs:
+    - targets:
+      # - alertmanager:9093
+
+rule_files:
+  # - "first_rules.yml"
+  # - "second_rules.yml"
+
+scrape_configs:
+
+  - job_name: "prometheus"
+    static_configs:
+    - targets: ["127.0.0.1:9090"]
+
+  - job_name: "node_exporter"
+    scrape_interval: 5s
+    static_configs:
+    - targets: ["127.0.0.1:9100"]
-- 
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