Monitor On Prem Resources From kube prom stack (Prometheus)

For this you would need Few Items

1. Endpoints
2. Service
3. ServiceMonitor

---
apiVersion: v1
kind: Endpoints
metadata:
  name: onprem-proxy
  namespace: monitoring
subsets:
  - addresses:
    - ip: "192.168.10.10"
    - ip: "192.168.10.11"
    ports:
    - name: 'onprem-proxy-metrics'
      protocol: TCP
      port: 9100
---
apiVersion: v1
kind: Service
metadata:
  name: onprem-proxy
  namespace: monitoring
  labels:
    app.kubernetes.io/name: onprem-proxy
spec:
  ports:
    - name: "onprem-proxy-metrics"
      protocol: TCP
      port: 9100
      targetPort: 9100
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: onprem-proxy
  namespace: monitoring
spec:
  endpoints:
    - interval: 10s
      path: /metrics
      port: onprem-proxy-metrics
  namespaceSelector:
    matchNames:
    - monitoring
  selector:
    matchLabels:
      app.kubernetes.io/name: onprem-proxy