finally add the contents to prometheus

etc/examples/prometheus.yml.ww

@@ -0,0 +1,46 @@
+# This file is autogenerated by warewulf 
+# Host:   {{.BuildHost}}
+# Time:   {{.BuildTime}}
+# Source: {{.BuildSource}}
+#
+global:
+  scrape_interval:     15s # By default, scrape targets every 15 seconds.
+  evaluation_interval: 15s # By default, scrape targets every 15 seconds.
+  # 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'
+
+# Load and evaluate rules in this file every 'evaluation_interval' seconds.
+rule_files:
+  # - "first.rules"
+  # - "second.rules"
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: 'prometheus'
+
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: 5s
+    scrape_timeout: 5s
+
+    # metrics_path defaults to '/metrics'
+    # scheme defaults to 'http'.
+
+    static_configs:
+      - targets: ['localhost:9090']
+
+  - job_name: node
+    # If prometheus-node-exporter is installed, grab stats about the local
+    # machine by default.
+  - job_name: cluster
+    static_configs:
+    {{- range $node := $.AllNodes}}
+      - targets: ['{{ $node.Id.Get }}:9100']
+        labels: 
+          instance: '{{ $node.Id.Get }}'
+    {{- end }}