prometheus: First version of role

roles/prometheus/templates/node.json.j2

@@ -0,0 +1,10 @@
+[
+  {
+    "labels": {
+      "instance": "{{ item }}"
+    },
+    "targets": [
+      "{{ item }}"
+    ]
+  }
+]

roles/prometheus/templates/prometheus.yml.j2

@@ -0,0 +1,16 @@
+---
+global:
+  scrape_interval: 1m
+  scrape_timeout: 10s
+  evaluation_interval: 1m
+
+scrape_configs:
+  - job_name: node
+    scheme: https
+    tls_config:
+      ca_file: "{{ tls_certs }}/ca.crt"
+      key_file: "{{ tls_private }}/{{ inventory_hostname }}.key"
+      cert_file: "{{ tls_certs }}/{{ inventory_hostname }}.crt"
+    file_sd_configs:
+      - files:
+        - /srv/prometheus/node.d/*.json