No data for target Pod

[abhismansarkar]

These is my app manifest:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mongodb-deployment
  labels:
    app: mongodb
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mongodb
  template:
    metadata:
      labels:
        app: mongodb
    spec:
      containers:
      - name: mongodb
        image: mongo:latest
        ports:
        - containerPort: 27017
---
apiVersion: v1
kind: Service
metadata:
  name: mongodb-service
spec:
  selector:
    app: mongodb
  ports:
    - protocol: TCP
      port: 27017
      targetPort: 27017        

---

My app’s exporter’s updated values (mongodb-exporter.yaml):

  uri: "mongodb://mongodb-service:27017"

serviceMonitor:
  enabled: true
  additionalLabels:
    release: prometheus

---

I apply the helm chart using:
helm install mongodb-exporter prometheus-community/prometheus-mongodb-exporter -f mongodb-exporter.yaml

I can now see the service monitor for mongo db in the Prometheus UI but when I try to visualize metrics on Grafana, I get No data

• What Grafana version and what operating system are you using?
  Latest Grafana version, I think. I got this version pre-bundled when I applied the kube-prometheus helm stack

• What did you expect to happen?
  Expecting metrics to show up

• Did you follow any online instructions? If so, what is the URL?
  I was following this tutorial: Prometheus Monitoring - Steps to monitor third-party apps using Prometheus Exporter | Part 2 - YouTube