Add external node-exporter monitoring through scrapeconfig

Signed-off-by: Jayapriya Pai <[email protected]>

scrape_config/.gitignore

@@ -0,0 +1 @@
+*.DS_Store

scrape_config/README.md

@@ -5,6 +5,7 @@ Monitor using ScrapeConfig
 ## staticConfigs
 
 - In the example, I have used in-cluster services (prometheus and alertmanager) as targets. It should work similar for external hosts.
+  Another example on external node exporter is also added now.
 
   ```bash
   kubectl apply -f ./static_config

scrape_config/static_config/prometheus-prometheus.yaml

@@ -0,0 +1,50 @@
+apiVersion: monitoring.coreos.com/v1
+kind: Prometheus
+metadata:
+  labels:
+    app.kubernetes.io/component: prometheus
+    app.kubernetes.io/instance: k8s
+    app.kubernetes.io/name: prometheus
+    app.kubernetes.io/part-of: kube-prometheus
+    app.kubernetes.io/version: 2.44.0
+  name: k8s
+  namespace: monitoring
+spec:
+  alerting:
+    alertmanagers:
+    - apiVersion: v2
+      name: alertmanager-main
+      namespace: monitoring
+      port: web
+  enableFeatures: []
+  externalLabels: {}
+  image: quay.io/prometheus/prometheus:v2.44.0
+  nodeSelector:
+    kubernetes.io/os: linux
+  podMetadata:
+    labels:
+      app.kubernetes.io/component: prometheus
+      app.kubernetes.io/instance: k8s
+      app.kubernetes.io/name: prometheus
+      app.kubernetes.io/part-of: kube-prometheus
+      app.kubernetes.io/version: 2.44.0
+  podMonitorNamespaceSelector: {}
+  podMonitorSelector: {}
+  probeNamespaceSelector: {}
+  probeSelector: {}
+  replicas: 2
+  resources:
+    requests:
+      memory: 400Mi
+  ruleNamespaceSelector: {}
+  ruleSelector: {}
+  securityContext:
+    fsGroup: 2000
+    runAsNonRoot: true
+    runAsUser: 1000
+  serviceAccountName: prometheus-k8s
+  serviceMonitorNamespaceSelector: {}
+  serviceMonitorSelector: {}
+  scrapeConfigNamespaceSelector: {}
+  scrapeConfigSelector: {}
+  version: 2.44.0

scrape_config/static_config/scrape-config-external-node-exporter.yaml

@@ -0,0 +1,14 @@
+apiVersion: monitoring.coreos.com/v1alpha1
+kind: ScrapeConfig
+metadata:
+  name: scrape-config-static-config-external
+  namespace: default
+  labels:
+    app.kubernetes.io/name: scrape-config-static-config-external-node-example
+spec:
+  staticConfigs:
+    - labels:
+        job: node-exporter-external
+      targets:
+      - node.demo.do.prometheus.io
+