AWS EKS – Managed Kubernetes Cluster einrichten 2025

EKS vs. selbst-installiertes Kubernetes

eksctl – EKS CLI Tool

# eksctl installieren
curl --silent --location "https://github.com/eksctl-io/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
sudo mv /tmp/eksctl /usr/local/bin

# Cluster erstellen (einfachste Methode)
eksctl create cluster     --name firma-cluster     --region eu-central-1     --node-type t3.medium     --nodes 3     --nodes-min 2     --nodes-max 5     --managed

# kubectl konfigurieren
aws eks update-kubeconfig     --region eu-central-1     --name firma-cluster

# Cluster-Status
kubectl get nodes
kubectl get pods --all-namespaces

Node Groups verwalten

# Neue Managed Node Group
eksctl create nodegroup     --cluster firma-cluster     --name gpu-nodes     --instance-type g4dn.xlarge     --nodes 1     --region eu-central-1

# Auto-Scaling konfigurieren
eksctl scale nodegroup     --cluster firma-cluster     --name managed-ng     --nodes 5     --nodes-min 2     --nodes-max 10

Erstes Deployment

# deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-web
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx-web
  template:
    metadata:
      labels:
        app: nginx-web
    spec:
      containers:
      - name: nginx
        image: nginx:stable-alpine
        ports:
        - containerPort: 80
        resources:
          requests:
            cpu: "100m"
            memory: "128Mi"
          limits:
            cpu: "200m"
            memory: "256Mi"
---
apiVersion: v1
kind: Service
metadata:
  name: nginx-web
spec:
  type: LoadBalancer
  selector:
    app: nginx-web
  ports:
  - port: 80
    targetPort: 80

kubectl apply -f deployment.yaml
kubectl get svc nginx-web  # External IP abwarten

AWS Load Balancer Controller

# IRSA (IAM Roles for Service Accounts) einrichten
eksctl utils associate-iam-oidc-provider     --cluster firma-cluster --approve

# LB Controller installieren
helm repo add eks https://aws.github.io/eks-charts
helm install aws-load-balancer-controller eks/aws-load-balancer-controller     -n kube-system     --set clusterName=firma-cluster     --set serviceAccount.create=true

Cluster autoscaler

# Cluster Autoscaler deployen
kubectl apply -f https://raw.githubusercontent.com/kubernetes/autoscaler/master/cluster-autoscaler/cloudprovider/aws/examples/cluster-autoscaler-autodiscover.yaml

kubectl -n kube-system annotate deployment.apps/cluster-autoscaler     cluster-autoscaler.kubernetes.io/safe-to-evict="false"

FAQ

Was kostet ein EKS-Cluster?
EKS Control Plane: 0,10 USD/Stunde (~72 USD/Monat). Dazu kommen EC2-Kosten für Nodes (z. B. 3x t3.medium: ~48 USD/Monat).

Fazit

AWS EKS ist der schnellste Weg zu produktions-reifem Kubernetes ohne Control-Plane-Management. Ideal wenn AWS ohnehin genutzt wird.

AWS EKS und Kubernetes für KMU in Heidelberg, Mannheim und der Rhein-Neckar-Region. Anfragen.