[Kubernetes - 1단계 : Deployment & Service]

sudo apt update && sudo apt install -y docker.io
sudo usermod -aG docker $USER

# Minikube
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube

# kubectl (v1.30 기준)
curl -LO "https://dl.k8s.io/release/$(curl -Ls https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
chmod +x kubectl && sudo mv kubectl /usr/local/bin/

minikube start --driver=docker
kubectl get nodes

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.25.3
        ports:
        - containerPort: 80

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  type: NodePort
  selector:
    app: nginx
  ports:
    - port: 80
      targetPort: 80
      nodePort: 30080

kubectl apply -f nginx-deployment.yaml
kubectl apply -f nginx-service.yaml
kubectl get all

kubectl describe pod <pod-name>
kubectl logs <pod-name>
kubectl exec -it <pod-name> -- bash
kubectl scale deployment nginx-deployment --replicas=4

# 브라우저 열기
minikube service nginx-service

# 또는 curl로 확인
curl $(minikube ip):30080