Pre-requisites

Kubernetes Cluster:

• Have a running Kubernetes cluster. #### kubectl:
• Installed and configured to interact with your cluster. #### Helm:
• Installed, for easier package deployment.

Deployment

Step 1: Install Prometheus Operator

• Open your terminal and run:

helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm install prometheus prometheus-community/kube-prometheus-stack

Step 2: Check Installation

• Confirm that Prometheus is running.

kubectl get pods -n default

Step 3: Configure Service Monitors

• Create a service-monitor.yaml file and specify what you need.

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: sap-service-monitor
spec:
  endpoints:
  - port: http-metrics
  selector:
    matchLabels:
      app: sap-service

• Apply the Service Monitor.

kubectl apply -f service-monitor.yaml

Step 4: Open Prometheus Dashboard

• Use port-forwarding to access the dashboard.

kubectl port-forward svc/prometheus-kube-prometheus-prometheus 9090:9090

• Open http://localhost:9090/targets. You should see your SAP service.

Usage

Step 1: Access Grafana

• Port-forward to Grafana.

kubectl port-forward svc/prometheus-grafana 3000:80

• Open http://localhost:3000. Default login is admin/admin.

Step 2: Import Dashboard

• Go to Dashboards > Import and pick a Kubernetes-focused dashboard.

Step 3: Set Alerts

• In Prometheus, go to Alerts and set your rules.

Step 4: Test

• Deploy a busy pod or two and watch the metrics to validate the setup.

And there you go! This guide should help you monitor Kubernetes clusters in an SAP environment with Prometheus.