From e2fd44eb537f28307a1feaf6578b10bb6b147ba7 Mon Sep 17 00:00:00 2001
From: Markus Hauschild <markus@moepman.eu>
Date: Sat, 6 Oct 2018 22:19:37 +0200
Subject: [PATCH] prometheus: new role

---
 roles/prometheus/handlers/main.yml           |  4 +++
 roles/prometheus/tasks/main.yml              | 14 ++++++++
 roles/prometheus/templates/prometheus.yml.j2 | 35 ++++++++++++++++++++
 site.yml                                     |  1 +
 4 files changed, 54 insertions(+)
 create mode 100644 roles/prometheus/handlers/main.yml
 create mode 100644 roles/prometheus/tasks/main.yml
 create mode 100644 roles/prometheus/templates/prometheus.yml.j2

diff --git a/roles/prometheus/handlers/main.yml b/roles/prometheus/handlers/main.yml
new file mode 100644
index 0000000..38f4e38
--- /dev/null
+++ b/roles/prometheus/handlers/main.yml
@@ -0,0 +1,4 @@
+---
+
+- name: Restart prometheus
+  service: name=prometheus state=restarted
diff --git a/roles/prometheus/tasks/main.yml b/roles/prometheus/tasks/main.yml
new file mode 100644
index 0000000..1f866a7
--- /dev/null
+++ b/roles/prometheus/tasks/main.yml
@@ -0,0 +1,14 @@
+---
+
+- name: Enable backports for prometheus
+  apt_repository: repo='deb http://httpredir.debian.org/debian stretch-backports main'
+
+- name: Install prometheus
+  apt: name=prometheus default_release='stretch-backports'
+
+- name: Configure prometheus
+  template: src=prometheus.yml.j2 dest=/etc/prometheus/prometheus.yml
+  notify: Restart prometheus
+
+- name: Enable prometheus
+  service: name=prometheus state=started enabled=yes
diff --git a/roles/prometheus/templates/prometheus.yml.j2 b/roles/prometheus/templates/prometheus.yml.j2
new file mode 100644
index 0000000..2e7b942
--- /dev/null
+++ b/roles/prometheus/templates/prometheus.yml.j2
@@ -0,0 +1,35 @@
+# Sample config for Prometheus.
+
+global:
+  scrape_interval:     60s
+  evaluation_interval: 60s
+  # scrape_timeout is set to the global default (10s).
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+  external_labels:
+      monitor: 'example'
+
+# Alertmanager configuration
+alerting:
+  alertmanagers:
+  - static_configs:
+    - targets:
+      # - localhost:9093
+
+# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
+rule_files:
+  # - "first_rules.yml"
+  # - "second_rules.yml"
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+{% if node_targets is defined %}
+- job_name: node
+    static_configs:
+      - targets:
+{% for target in node_targets %}
+        - {{ target }}
+{% endfor %}
+{% endif %}
diff --git a/site.yml b/site.yml
index bcde15e..941fa2b 100644
--- a/site.yml
+++ b/site.yml
@@ -26,6 +26,7 @@
   hosts: nabia.binary.kitchen
   roles:
   - librenms
+  - prometheus
   - racktables
   - uau
   - acme