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SukhanthN / prometheus-on-minikube

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Prerequisite

  • Minikube cluster
  • Helm

Steps:

  • Install Prometheus
  • Access Prometheus UI
  • Install Grafana
  • Get Grafana admin credentials
  • Access Grafana Web UI

Install Prometheus

  1. Add prometheus repo

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

  2. Install prometheus comminity chart

     helm install prometheus prometheus-community/prometheus

  3. Expose prometheus-server service via Nodeport

     kubectl expose service prometheus-server --type=NodePort --target-port=9090 --name=prometheus-server-np

  4. Check Services:

         # kubectl get pods
     NAME                                                 READY   STATUS    RESTARTS   AGE
     prometheus-alertmanager-0                            1/1     Running   0          2m55s
     prometheus-kube-state-metrics-7c668ff876-sgjkd       1/1     Running   0          2m56s
     prometheus-prometheus-node-exporter-c2zgh            1/1     Running   0          2m56s
     prometheus-prometheus-pushgateway-76dd88bb6b-bk24g   1/1     Running   0          2m56s
     prometheus-server-6cfc854b6f-zt9tb                   2/2     Running   0          2m56s
     # kubectl get pv
     NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                                       STORAGECLASS   REASON   AGE
     pvc-48badce7-44aa-43f7-b516-1c0976f2a96c   8Gi        RWO            Delete           Bound    default/prometheus-server                   standard                3m6s
     pvc-5965ca3c-83ba-4b7f-bef9-44c4d7fd12c8   2Gi        RWO            Delete           Bound    default/storage-prometheus-alertmanager-0   standard                3m5s
     # kubectl get pvc
     NAME                                STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS   AGE
     prometheus-server                   Bound    pvc-48badce7-44aa-43f7-b516-1c0976f2a96c   8Gi        RWO            standard       3m10s
     storage-prometheus-alertmanager-0   Bound    pvc-5965ca3c-83ba-4b7f-bef9-44c4d7fd12c8   2Gi        RWO            standard       3m9s
     
     # kubectl get svc
     NAME                                  TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)        AGE
     kubernetes                            ClusterIP   10.96.0.1        <none>        443/TCP        14m
     prometheus-alertmanager               ClusterIP   10.103.8.18      <none>        9093/TCP       30s
     prometheus-alertmanager-headless      ClusterIP   None             <none>        9093/TCP       30s
     prometheus-kube-state-metrics         ClusterIP   10.101.171.151   <none>        8080/TCP       30s
     prometheus-prometheus-node-exporter   ClusterIP   10.100.2.116     <none>        9100/TCP       30s
     prometheus-prometheus-pushgateway     ClusterIP   10.96.87.50      <none>        9091/TCP       30s
     prometheus-server                     ClusterIP   10.106.127.25    <none>        80/TCP         30s
     prometheus-server-np                  NodePort    10.109.77.6      <none>        80:30021/TCP   13s

Access Prometheus UI

            # minikube service prometheus-server-np --url

            http://172.31.8.102:32699

Now access the UI using above URL.

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Install Grafana

  1. Add grafana Helm repo

     helm repo add grafana https://grafana.github.io/helm-charts

  2. Install Grafana Chart

     helm install grafana grafana/grafana

 1. Get your 'admin' user password by running:

    kubectl get secret --namespace default grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo

 2. The Grafana server can be accessed via port 80 on the following DNS name from within your cluster:

    grafana.default.svc.cluster.local

    Get the Grafana URL to visit by running these commands in the same shell:
      export POD_NAME=$(kubectl get pods --namespace default -l "app.kubernetes.io/name=grafana,app.kubernetes.io/instance=grafana" -o jsonpath="{.items[0].metadata.name}")
      kubectl --namespace default port-forward $POD_NAME 3000

 3. Login with the password from step 1 and the username: admin

  3. Exposed the grafana service

     kubectl expose service grafana --type=NodePort --target-port=3000 --name=grafana-np

  4. Check exposed service

     kubectl get services

Access Grafana UI

    # minikube service grafana-np --url
    http://172.31.8.102:30967

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Add Prometheus data source (use prometheus-server:80 URL):

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