[FEAT] : CD Test

.deploy/Dockerfile

@@ -0,0 +1,4 @@
+FROM openjdk:17
+ARG JAR_FILE=build/libs/*.jar
+COPY ${JAR_FILE} app.jar
+ENTRYPOINT ["java","-jar","/app.jar"]

.deploy/blue-deploy.yml

@@ -0,0 +1,16 @@
+version: '3'
+
+services:
+
+  web:
+    container_name: neighbors-blue
+    image: ${DOCKER_USERNAME}/${DOCKER_REPOSITORY}
+    expose:
+      - "8080"
+    ports:
+      - "8080:8080"
+    environment:
+      - TZ=Asia/Seoul
+      - DB_URL=${DATASOURCE_URL_LOCAL}
+      - DB_USERNAME=${DATASOURCE_USERNAME}
+      - DB_PASSWORD=${DATASOURCE_PASSWORD}

.deploy/green-deploy.yml

@@ -0,0 +1,16 @@
+version: '3'
+
+services:
+
+  web:
+    container_name: neighbors-green
+    image: ${DOCKER_USERNAME}/${DOCKER_REPOSITORY}
+    expose:
+      - "8081"
+    ports:
+      - "8081:8081"
+    environment:
+      - TZ=Asia/Seoul
+      - DB_URL=${DATASOURCE_URL_LOCAL}
+      - DB_USERNAME=${DATASOURCE_USERNAME}
+      - DB_PASSWORD=${DATASOURCE_PASSWORD}

.github/workflows/CD.yml

@@ -0,0 +1,86 @@
+name: Blue-Green deployment
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+
+      # 레포지토리의 특정 브랜치, 커밋을 가져오는 설정
+      # Github Action 라이브러리인 actions/checkout@v3 액션을 사용
+      - uses: actions/checkout@v3
+
+      # JDK 셋업
+      # Github Action 라이브러리인 actions/setup-java@v3 액션을 사용
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      # Gradle 빌드에 필요한 데이터를 캐싱하여 빌드 속도를 향상시키는 설정
+      # Github Action 라이브러리인 actions/cache 액션을 사용
+      # Gradle 캐시에 의존성, 래퍼 등을 빌드할 때 저장해두었다가 나중에 재빌드할 때 재사용해서 속도를 향상
+      - name: Cache Gradle packages
+        uses: actions/cache@v3
+        with:
+          path: |
+            ~/.gradle/caches
+            ~/.gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*') }}
+          restore-keys: ${{ runner.os }}-gradle-
+
+      # gradle 파일에 접근할 권한을 부여
+      - name: Run chmod to make gradlew executable
+        run: chmod +x ./gradlew
+
+      # build 작업 수행
+      - name: Build with Gradle Wrapper
+        run: ./gradlew build
+
+      # docker image를 build 하고 docker hub에 push
+      - name: Docker Build and Push
+        run: |
+          sudo docker login -u ${{ secrets.DOCKER_USERNAME }} -p ${{ secrets.DOCKER_PASSWORD }}
+          sudo docker build -f ./.deploy/Dockerfile -t ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPOSITORY }} .
+          sudo docker push ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKER_REPOSITORY }}
+
+  deploy:
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      # DockerHub에 로그인
+      # GitHub Action 라이브러리 사용
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      # .env 파일에 환경 변수 값들 집어넣기 (Github Secret 에 저장한 정보를 .env 파일로 echo)
+      # 그리고 Blue-Green 배포 스크립트인 deploy.sh 실행
+      - name: Run a New Version of the the application on EC2
+        uses: appleboy/ssh-action@master
+        with:
+          host: ${{ secrets.EC2_HOST }}
+          username: ubuntu
+          key: ${{ secrets.EC2_KEY }}
+          script: |
+            rm -rf ./.env
+            touch ./.env
+            echo "DOCKER_USERNAME=${{ secrets.DOCKER_USERNAME }}" >> ./.env
+            echo "DOCKER_REPOSITORY=${{ secrets.DOCKER_REPOSITORY }}" >> ./.env
+            echo "DATASOURCE_URL_LOCAL=${{ secrets.DATASOURCE_URL_LOCAL }}" >> ./.env
+            echo "DATASOURCE_USERNAME=${{ secrets.DATASOURCE_USERNAME }}" >> ./.env
+            echo "DATASOURCE_PASSWORD=${{ secrets.DATASOURCE_PASSWORD }}" >> ./.env
+            cd ~/app/Backend
+            chmod +x deploy.sh
+            source deploy.sh
+
+

.gitignore

@@ -35,3 +35,5 @@ out/
 
 ### VS Code ###
 .vscode/
+
+.DS_Store

deploy.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+set -e
+
+ERR_MSG=''
+
+trap 'echo "Error occured: $ERR_MSG. Exiting deploy script."; exit 1' ERR
+
+if sudo docker ps --filter "name=blue" --format '{{.ID}}' | grep -E .; then
+  RUN_TARGET="green"
+  STOP_TARGET="blue"
+  WAS_RUN_PORT=8081
+  WAS_STOP_PORT=8080
+else
+  RUN_TARGET="blue"
+  STOP_TARGET="green"
+  WAS_RUN_PORT=8080
+  WAS_STOP_PORT=8081
+fi
+
+echo "The $STOP_TARGET version is currently running on the server. Starting the $RUN_TARGET version."
+
+DOCKER_COMPOSE_FILE="$RUN_TARGET-deploy.yml"
+sudo docker-compose -f "$DOCKER_COMPOSE_FILE" pull || { ERR_MSG='Failed to pull docker image'; exit 1; }
+sudo docker-compose -f "$DOCKER_COMPOSE_FILE" up -d || { ERR_MSG='Failed to start docker image'; exit 1; }
+sleep 50
+
+echo "Starting health check for the new version of the application."
+
+HEALTH_CHECK_PASSED=true
+RUN_CONTAINER_IDS=$(sudo docker ps --filter "name=$RUN_TARGET" --quiet --all)
+
+for CONTAINER_ID in $RUN_CONTAINER_IDS; do
+  HEALTH_STATUS=$(sudo docker inspect --format "{{.State.Health.Status}}" $CONTAINER_ID)
+  if [ "$HEALTH_STATUS" != "healthy" ]; then
+    HEALTH_CHECK_PASSED=false
+    break
+  fi
+done
+
+if [ "$HEALTH_CHECK_PASSED" = false ]; then
+  sudo docker image prune -af
+  ERR_MSG="Health check failed."
+  exit 1
+fi
+
+echo "Health check passed. Reloading nginx to transfer traffic from $STOP_TARGET to $RUN_TARGET."
+
+NGINX_ID=$(sudo docker ps --filter "name=nginx" --quiet)
+NGINX_CONFIG="/etc/nginx/conf.d/default.conf"
+
+sudo docker exec $NGINX_ID /bin/bash -c "sed -i 's/neighbors-$STOP_TARGET:$WAS_STOP_PORT/neighbors-$RUN_TARGET:$WAS_RUN_PORT/' $NGINX_CONFIG"
+sudo docker exec $NGINX_ID /bin/bash -c "nginx -s reload" || { ERR_MSG='Failed to reload nginx'; exit 1; }
+
+echo "Terminating the $STOP_TARGET applications."
+
+STOP_CONTAINER_ID=$(sudo docker ps --filter "name=$STOP_TARGET" --quiet)
+if [ -n "$STOP_CONTAINER_ID" ]; then
+  sudo docker stop $STOP_CONTAINER_ID
+  sudo docker rm $STOP_CONTAINER_ID
+  sudo docker image prune -af
+fi
+
+rm .env
+
+echo "Deployment success."
+exit 0