[AWS EKS] 웹 애플리케이션 구축하기 - 4.서비스 배포

[flask 백엔드 배포]

1.flask 백엔드 소스코드 다운

git clone https://github.com/joozero/amazon-eks-flask.git

2. flask AWS ECR 생성

aws ecr create-repository \
--repository-name dhkim-flask-backend \
--image-scanning-configuration scanOnPush=true \
--region ${AWS_REGION}

• --image-scanning-configuration scanOnPush=true 옵션을 통해 이미지가 푸시될 때 자동으로 스캐닝 수행

3.flask백엔드 이미지 PUSH

aws ecr get-login-password --region ${AWS_REGION} | docker login --username AWS --password-stdin $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com
docker build -t demo-flask-backend .
docker tag demo-flask-backend:latest $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/dhkim-flask-backend:latest
docker push $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/dhkim-flask-backend:latest

• aws ecr get-login~~ 를 통해 docker클라이언트 ECR인증
• image가 빌드되면 ECR에 PUSH되도록 tag설정

4.flask-deployment 배포

cat <<EOF> flask-deployment.yaml
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-flask-backend
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demo-flask-backend
  template:
    metadata:
      labels:
        app: demo-flask-backend
    spec:
      containers:
        - name: demo-flask-backend
          image: $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/dhkim-flask-backend:latest
          imagePullPolicy: Always
          ports:
            - containerPort: 8080
EOF

• image~~에서 본인의 ECR경로 확인

5.flask-Service 배포

cat <<EOF> flask-service.yaml
---
apiVersion: v1
kind: Service
metadata:
  name: demo-flask-backend
  annotations:
    alb.ingress.kubernetes.io/healthcheck-path: "/contents/aws"
spec:
  selector:
    app: demo-flask-backend
  type: NodePort
  ports:
    - port: 8080 # 서비스가 생성할 포트  
      targetPort: 8080 # 서비스가 접근할 pod의 포트
      protocol: TCP
EOF

6.flask-Ingress 배포

cat <<EOF> flask-ingress.yaml
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
    name: "flask-backend-ingress"
    namespace: default
    annotations:
      kubernetes.io/ingress.class: alb
      alb.ingress.kubernetes.io/scheme: internet-facing
      alb.ingress.kubernetes.io/target-type: ip
      alb.ingress.kubernetes.io/group.name: eks-demo-group
      alb.ingress.kubernetes.io/group.order: '1'
spec:
    rules:
    - http:
        paths:
          - path: /contents
            pathType: Prefix
            backend:
              service:
                name: "demo-flask-backend"
                port:
                  number: 8080
EOF

7.배포 및 확인

kubectl apply -f flask-deployment.yaml
kubectl apply -f flask-service.yaml
kubectl apply -f flask-ingress.yaml

[nodejs 백엔드 배포]

1.nodejs-deployment 배포

cat <<EOF> nodejs-deployment.yaml
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-nodejs-backend
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demo-nodejs-backend
  template:
    metadata:
      labels:
        app: demo-nodejs-backend
    spec:
      containers:
        - name: demo-nodejs-backend
          image: public.ecr.aws/y7c9e1d2/joozero-repo:latest
          imagePullPolicy: Always
          ports:
            - containerPort: 3000
EOF

2.nodejs-service 배포

cat <<EOF> nodejs-service.yaml
---
apiVersion: v1
kind: Service
metadata:
  name: demo-nodejs-backend
  annotations:
    alb.ingress.kubernetes.io/healthcheck-path: "/services/all"
spec:
  selector:
    app: demo-nodejs-backend
  type: NodePort
  ports:
    - port: 8080
      targetPort: 3000
      protocol: TCP
EOF

3.nodejs-ingress 배포

cat <<EOF> nodejs-ingress.yaml
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: "nodejs-backend-ingress"
  namespace: default
  annotations:
    kubernetes.io/ingress.class: alb
    alb.ingress.kubernetes.io/scheme: internet-facing
    alb.ingress.kubernetes.io/target-type: ip
    alb.ingress.kubernetes.io/group.name: eks-demo-group
    alb.ingress.kubernetes.io/group.order: '2'
spec:
  rules:
  - http:
        paths:
          - path: /services
            pathType: Prefix
            backend:
              service:
                name: "demo-nodejs-backend"
                port:
                  number: 8080
EOF

4.배포 및 확인

kubectl apply -f nodejs-deployment.yaml
kubectl apply -f nodejs-service.yaml
kubectl apply -f nodejs-ingress.yaml

[프론트엔드 배포]

1.프론트 소스코드 다운

git clone https://github.com/joozero/amazon-eks-frontend.git

2.프론트엔드 AWS ECR 생성

aws ecr create-repository \
--repository-name dhkim-frontend \
--image-scanning-configuration scanOnPush=true \
--region ${AWS_REGION}

• --image-scanning-configuration scanOnPush=true 옵션을 통해 이미지가 푸시될 때 자동으로 스캐닝 수행

3.App.js 소스코드 수정

echo http://$(kubectl get ingress/flask-backend-ingress -o jsonpath='{.status.loadBalancer.ingress[*].hostname}')/contents/'${search}'

• flask백엔드의 ingress주소 삽입

4.UpperPage.js 소스코드 수정

echo http://$(kubectl get ingress/nodejs-backend-ingress -o jsonpath='{.status.loadBalancer.ingress[*].hostname}')/services/all

• nodejs백엔드의 ingress주소 삽입

5.프론트엔드 Install

cd /home/ec2-user/environment/amazon-eks-frontend
npm install
npm run build

6.프론트엔드 이미지 PUSH

docker build -t demo-frontend .
docker tag dem-frontend:latest $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/dhkim-frontend:latest
docker push $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/demo-frontend:latest

7.frontend-deployment 배포

cat <<EOF> frontend-deployment.yaml
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: demo-frontend
  namespace: default
spec:
  replicas: 3
  selector:
    matchLabels:
      app: demo-frontend
  template:
    metadata:
      labels:
        app: demo-frontend
    spec:
      containers:
        - name: demo-frontend
          image: $ACCOUNT_ID.dkr.ecr.$AWS_REGION.amazonaws.com/dhkim-frontend:latest
          imagePullPolicy: Always
          ports:
            - containerPort: 80
EOF

• image~~에서 본인의 ECR경로 확인

8.frontend-service 배포

cat <<EOF> frontend-service.yaml
---
apiVersion: v1
kind: Service
metadata:
  name: demo-frontend
  annotations:
    alb.ingress.kubernetes.io/healthcheck-path: "/"
spec:
  selector:
    app: demo-frontend
  type: NodePort
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
EOF

9.frontend-ingress 배포

cat <<EOF> frontend-ingress.yaml
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: "frontend-ingress"
  namespace: default
  annotations:
    kubernetes.io/ingress.class: alb
    alb.ingress.kubernetes.io/scheme: internet-facing
    alb.ingress.kubernetes.io/target-type: ip
    alb.ingress.kubernetes.io/group.name: eks-demo-group
    alb.ingress.kubernetes.io/group.order: '3'
spec:
  rules:
    - http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: "demo-frontend"
                port:
                  number: 80
EOF

10.배포 및 확인

kubectl apply -f frontend-deployment.yaml
kubectl apply -f frontend-service.yaml
kubectl apply -f frontend-ingress.yaml
echo http://$(kubectl get ingress/frontend-ingress -o jsonpath='{.status.loadBalancer.ingress[*].hostname}')

nodejs와 flask백엔드 모두 정상적으로 배포 확인 !!