It's Me, Tommy

Kubernetes: Install Grafana & Prometheus on GKE using Helm Bitnami

Install Grafana

Create namespace

kubectl create ns monitoring

Add repo

helm repo add bitnami https://charts.bitnami.com/bitnami

Update repo

helm repo update

View version

helm search repo -l bitnami/grafana | head

Create custom_values.yaml

I added an annotation because I wanted an internal IP for the Load Balancer. Feel free to remove that section.

vi custom_values.yaml
service:
  type: LoadBalancer
  annotations:
    cloud.google.com/load-balancer-type: "Internal"
# Set to Recreate if you use persistent volume that cannot be mounted by more than one pods to make sure the pods is destroyed first.
updateStrategy:
  type: Recreate
persistence:
  enabled: true
  accessModes: ReadWriteOnce
  size: 200Gi

Install

helm install grafana \
  -n monitoring \
  -f custom_values.yaml \
  --version 6.1.5 \
  bitnami/grafana

Connect

  • un: admin
# Password
echo "Password: $(kubectl get secret grafana-admin --namespace monitoring \
-o jsonpath="{.data.GF_SECURITY_ADMIN_PASSWORD}" | base64 --decode)"

Port forward.

kubectl port-forward svc/grafana 8081:3000 -n monitoring
open http://localhost:8081

Install Prometheus

View versions

helm search repo -l bitnami/kube-prometheus | head

Create custom_values.yaml

vi custom_values.yaml
prometheus:
  enabled: true
  persistence:
    accessModes:
      - ReadWriteOnce
    size: 200Gi

alertmanager:
  persistence:
    enabled: true
    accessModes:
      - ReadWriteOnce
    size: 200Gi

# Depending on which DNS solution you have installed in your cluster, enable the right option
# kubectl get po -n kube-system| grep dns
coreDns:
  enabled: false

kubeProxy:
  enabled: true

Install

helm install prometheus \
  -n monitoring \
  -f custom_values.yaml \
  --version 6.1.4 \
  bitnami/kube-prometheus

Connect

# Prometheus
kubectl port-forward --namespace monitoring svc/prometheus-kube-prometheus-prometheus 9090:9090
open http://localhost:9090

# Alert Manager
kubectl port-forward --namespace monitoring svc/prometheus-kube-prometheus-alertmanager 9093:9093
open http://localhost:9093

# Kube-State-Metrics
kubectl port-forward svc/prometheus-kube-state-metrics -n monitoring 4000:8080
open http://localhost:4000

Configure

Add Prometheus to Grafana.

Configuration → Data sources → Add data sourse → Prometheus (Select)

Add the following URL to the HTTP / URL section.

Note: Make sure to add the correct namespace within the prometheus service URL (in my case, I installed prometheus within the monitoring namespace).

http://prometheus-kube-prometheus-prometheus.monitoring.svc.cluster.local:9090

Click Save & test.

Clean up

helm uninstall grafana -n monitoring
helm uninstall prometheus -n monitoring

Tommy Elmesewdy

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