Add Prometheus monitoring examples

node-daemon/monitoring/README.md

@@ -2,6 +2,14 @@
 
 This directory contains several monitoring resources that can be used with various monitoring systems to track and alert on a PVC cluster system.
 
+## Prometheus + Grafana
+
+The included example Prometheus configuration and Grafana dashboard can be used to query the PVC API for Prometheus data and display it with a consistent dashboard.
+
+Note that the default configuration here also includes Ceph cluster information; a Ceph dashboard can be found externally.
+
+Note too that this does not include node export examples from individual PVC nodes; those must be set up separately.
+
 ## Munin
 
 The included Munin plugins can be activated by linking to them from `/etc/munin/plugins/`. Two plugins are provided:

node-daemon/monitoring/prometheus/prometheus.yml

@@ -0,0 +1,8 @@
+# Other configuration omitted
+scrape_configs:
+  - job_name: "pvc_cluster"
+    metrics_path: /api/v1/metrics
+    scheme: "http"
+    file_sd_configs:
+      - files:
+          - 'targets-pvc_cluster.json'

node-daemon/monitoring/prometheus/targets-pvc_cluster.json

@@ -0,0 +1,11 @@
+[
+  {
+    "targets": [
+      "pvc.upstream.floating.address.tld:7370"
+    ],
+    "labels": {
+      "cluster": "cluster1"
+    }
+  }
+]
+