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Kubernetes Monitoring with Prometheus

Prometheus is capable of monitoring a wide variety of environments, including Kubernetes. In this lab, you will have the opportunity to work with both Prometheus and Kubernetes as you configure Prometheus monitoring for a Kubernetes cluster. You will use `kube-state-metrics` to provide Kubernetes metric data, and you will configure Prometheus to pull in those metrics.

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Path Info

Clock icon Intermediate
Clock icon 45m
Clock icon Jun 12, 2020

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Table of Contents

  1. Challenge

    Set Up `kube-state-metrics` to Expose Metrics for Your Kubernetes Cluster

    1. Log in to the Kubernetes server.

    2. Install kube-state-metrics:

      git clone
      cd kube-state-metrics/
      git checkout v1.8.0
      kubectl apply -f kubernetes
    3. Create a NodePort service to expose the metrics service outside the cluster, making it accessible to the Prometheus server:

      cd ..
      vi kube-state-metrics-nodeport-svc.yml
    4. Define the NodePort service in a YAML file:

      kind: Service
      apiVersion: v1
        namespace: kube-system
        name: kube-state-nodeport
          k8s-app: kube-state-metrics
        - protocol: TCP
          port: 8080
          nodePort: 30000
        type: NodePort
    5. Create the NodePort service and test it:

      kubectl apply -f kube-state-metrics-nodeport-svc.yml
      curl localhost:30000/metrics
  2. Challenge

    Configure Prometheus to Scrape Metrics from `kube-state-metrics`

    1. Log in to the Prometheus server.

    2. Edit the Prometheus config:

      sudo vi /etc/prometheus/prometheus.yml
    3. Under the scrape_configs section, add a scrape configuration for Kubernetes:

      - job_name: 'Kubernetes'
        - targets: ['limedrop-kube:30000']
    4. Restart Prometheus to load the new configuration:

      sudo systemctl restart prometheus
    5. Use the expression browser to verify you can see Kubernetes metrics in Prometheus. You can access the expression browser in a web browser at http://<PROMETHEUS_SERVER_PUBLIC_IP>:9090.

    6. Run a query to view some Kubernetes metric data:


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