Memulai Kubernetes dengan K3s

# Jalankan skrip instalasi resmi K3s
curl -sfL https://get.k3s.io | sh -

sudo systemctl status k3s

mkdir -p ~/.kube
sudo cp /etc/rancher/k3s/k3s.yaml ~/.kube/config
sudo chown $(id -u):$(id -g) ~/.kube/config
export KUBECONFIG=~/.kube/config

kubectl get nodes

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-web
  labels:
    app: nginx-web
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx-web
  template:
    metadata:
      labels:
        app: nginx-web
    spec:
      containers:
      - name: nginx
        image: nginx:alpine
        ports:
        - containerPort: 80
        resources:
          limits:
            memory: "128Mi"
            cpu: "200m"
---
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  type: NodePort
  selector:
    app: nginx-web
  ports:
    - port: 80
      targetPort: 80
      nodePort: 30080

# Deploy manifes menggunakan kubectl
kubectl apply -f app-nginx.yaml

# Periksa status Pod yang sedang dibuat
kubectl get pods -l app=nginx-web

# Periksa status Deployment dan Service
kubectl get deployment nginx-web
kubectl get svc nginx-service

curl http://localhost:30080

# Melihat log dari Pod tertentu
kubectl logs <nama_pod>

# Melihat kejadian (events) dan diagnostik masalah Pod jika status Error/CrashLoopBackOff
kubectl describe pod <nama_pod>

# Masuk ke terminal interaktif di dalam Pod
kubectl exec -it <nama_pod> -- /bin/sh

# Menghapus aplikasi yang tadi di-deploy
kubectl delete -f app-nginx.yaml