feat(service_monitor): use grafana agent for node exporter

!1

templates/ServiceMonitor-Node.yaml

@@ -0,0 +1,43 @@
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    app.kubernetes.io/component: exporter
+    app.kubernetes.io/name: node
+    app.kubernetes.io/part-of: {{ $.Chart.Name }}
+    app.kubernetes.io/version: {{ $.Chart.Version }}
+    app.kubernetes.io/managed-by: {{ $.Release.Service }}
+    #cluster: dev
+  name: node
+  namespace: monitoring
+spec:
+  endpoints:
+
+  - bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
+    interval: 10s
+    honorLabels: true
+    path: /metrics
+    port: grafana-metrics
+    scheme: http
+    relabelings:
+    - action: replace
+      regex: (.*)
+      replacement: $1
+      sourceLabels:
+      - __meta_kubernetes_pod_node_name
+      targetLabel: instance
+    - targetLabel: "job"
+      replacement: "node-exporter"
+    - action: replace
+      regex: (.*)
+      replacement: $1
+      sourceLabels:
+      - __meta_kubernetes_pod_node_name
+      targetLabel: node
+  selector:
+    matchLabels:
+      app.kubernetes.io/instance: k8s
+      app.kubernetes.io/component: exporter
+      app.kubernetes.io/name: grafana-agent
+      app.kubernetes.io/part-of: {{ $.Chart.Name }}