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Kubernetes : Monitoring with Prometheus + Grafana

Kubernetes : Monitoring with Prometheus + Grafana

grafana

Monitor Kubernetes cluster using Prometheus + Grafana

Requirements

  • A ready to use kubenetes cluster
  • Helm client wich can access to cluster

Install stack

Step 1 : Create monitoring stack namespace

kubectl create namespace monitoring

Step 2 : Install Prometheus + Grafana

  • Init Helm stable repo
$ helm repo add stable https://kubernetes-charts.storage.googleapis.com
helm repo update
  • Install Prometheus + Grafana
helm install grafana --namespace monitoring stable/grafana
helm install prometheus --namespace monitoring stable/prometheus

Step 3 : Connect

  • Prometheus: http://localhost:9090
export POD_NAME=$(kubectl get pods --namespace monitoring -l "app=prometheus,component=server" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace monitoring port-forward $POD_NAME 9090
  • Grafana: http://localhost:3000
export POD_NAME=$(kubectl get pods --namespace monitoring -l "app=grafana" -o jsonpath="{.items[0].metadata.name}")
kubectl --namespace monitoring port-forward $POD_NAME 3000

# Get "admin" password
kubectl get secret --namespace monitoring grafana -o jsonpath="{.data.admin-password}" | base64 --decode ; echo
  • Grafana datasource settings

Use following URL as Prometheus server url: http://prometheus-server.monitoring.svc.cluster.local

WARNING: Grafana - By default Persistence is disabled !!!