feat: 무중단 배포(blue-green) 스크립트 및 CI/CD 파이프라인 적용

- backend, frontend blue-green 배포 스크립트 추가 및 헬스 체크 구현
- nginx 설정을 blue-green 환경에 맞게 수정
- GitHub Actions 워크플로우에서 무중단 배포 자동화 적용
- 프론트엔드 헬스 체크 추가 및 백엔드 actuator 활용

Author: LimKangHyun

.github/workflows/ci-cd.yml

@@ -73,8 +73,14 @@ jobs:
           host: ${{ secrets.EC2_HOST }}
           username: ubuntu
           key: ${{ secrets.EC2_PRIVATE_KEY }}
+          # 배포 무중단 (blue-green 스위칭 전략)
           script: |
-            cd ~/NBE5-7-2-TEAM08
-            docker-compose pull
-            docker-compose down
-            docker-compose up -d --build
+            cd ~/NBE5-7-2-TEAM08/deployment
+            chmod +x ./deploy.sh
+            ./deploy.sh
+          # 중단방식
+          # script: |
+          #   cd ~/NBE5-7-2-TEAM08
+          #   docker-compose pull
+          #   docker-compose down
+          #   docker-compose up -d --build

backend/build.gradle

@@ -45,17 +45,15 @@ dependencies {
     implementation 'io.awspring.cloud:spring-cloud-aws-starter:3.1.1'
     implementation 'com.amazonaws:aws-java-sdk-s3:1.12.767'
 
+    implementation 'org.springframework.boot:spring-boot-starter-actuator'
+
     compileOnly 'org.projectlombok:lombok'
     runtimeOnly 'com.mysql:mysql-connector-j'
     annotationProcessor 'org.projectlombok:lombok'
+
     testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'org.springframework.security:spring-security-test'
     testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
-
-    compileOnly 'org.projectlombok:lombok'
-    annotationProcessor 'org.projectlombok:lombok'
-    runtimeOnly 'com.mysql:mysql-connector-j'
-
     testCompileOnly 'org.projectlombok:lombok'
     testAnnotationProcessor 'org.projectlombok:lombok'
 }

backend/src/main/resources/application-prod.yml

@@ -85,3 +85,12 @@ jwt:
 logging:
   level:
     org.springframework.security: DEBUG
+
+management:
+  endpoints:
+    web:
+      exposure:
+        include: health,info,metrics,env
+  endpoint:
+    health:
+      show-details: always

docker-compose.yml

@@ -1,10 +1,10 @@
 services:
 
-  dev-chat-backend:
+  dev-chat-backend-blue:
     image: limkanghyun/dev-chat-backend
-    container_name: dev-chat-backend
+    container_name: dev-chat-backend-blue
     ports:
-      - "8080:8080"
+      - "8081:8080" # 내부는 8080이지만 외부는 8082
     env_file:
       - ./backend/.env
     environment:
@@ -14,29 +14,51 @@ services:
     networks:
       - dev-chat-network
 
-  dev-chat-frontend:
+  dev-chat-backend-green:
+    image: limkanghyun/dev-chat-backend
+    container_name: dev-chat-backend-green
+    ports:
+      - "8082:8080"  # 내부는 8080이지만 외부는 8082
+    env_file:
+      - ./backend/.env
+    environment:
+      - TZ=Asia/Seoul
+    depends_on:
+      - prometheus
+    networks:
+      - dev-chat-network
+
+  dev-chat-frontend-blue:
     image: limkanghyun/dev-chat-frontend
-    container_name: dev-chat-frontend
+    container_name: dev-chat-frontend-blue
     ports:
       - "3000:80"
-    depends_on:
-      - dev-chat-backend
+    networks:
+      - dev-chat-network
+
+  dev-chat-frontend-green:
+    image: limkanghyun/dev-chat-frontend:green
+    container_name: dev-chat-frontend-green
+    ports:
+      - "3001:80"
     networks:
       - dev-chat-network
 
   nginx_proxy:
     image: nginx:latest
     container_name: nginx_proxy
     volumes:
-      - ./nginx.conf:/etc/nginx/nginx.conf:ro
+      - ./nginx.conf:/etc/nginx/nginx.conf
       - /etc/letsencrypt/archive/thedevchat.duckdns.org/fullchain1.pem:/etc/letsencrypt/live/thedevchat.duckdns.org/fullchain.pem:ro
       - /etc/letsencrypt/archive/thedevchat.duckdns.org/privkey1.pem:/etc/letsencrypt/live/thedevchat.duckdns.org/privkey.pem:ro
     ports:
       - "80:80"
       - "443:443"
     depends_on:
-      - dev-chat-frontend
-      - dev-chat-backend
+      - dev-chat-frontend-blue
+      - dev-chat-frontend-green
+      - dev-chat-backend-blue
+      - dev-chat-backend-green
     networks:
       - dev-chat-network
 

nginx.conf

@@ -2,11 +2,11 @@ events { }
 
 http {
   upstream frontend {
-    server dev-chat-frontend:80;  # React 컨테이너
+    server dev-chat-frontend-blue:80;  # React 컨테이너
   }
 
   upstream backend {
-    server dev-chat-backend:8080; # Spring Boot 컨테이너
+    server dev-chat-backend-blue:8080; # Spring Boot 컨테이너
   }
 
   server {