Threenodes

README.md

@@ -16,3 +16,6 @@
 ## Run
 - Run command `docker-compose up`
 - Access to http://localhost/
+
+## Thanks 
+https://www.adictosaltrabajo.com/2017/06/22/balanceando-apps-de-spring-boot-con-nginx-en-docker/

docker-compose.yaml

@@ -1,23 +1,45 @@
 version: '3'
 services:
   nginx:
-   container_name: some-nginx
-   image: nginx:1.13
-   restart: always
-   ports:
-   - 80:80
-   - 443:443
-   volumes:
-   - ./nginx/conf.d:/etc/nginx/conf.d
-   depends_on:
-   - app
-
-  app:
+    build:
+      dockerfile: ./nginx/nginx.dockerfile
+      context: .
+    container_name: my-nginx
+    image: armandoss/my-nginx
+    restart: always
+    ports:
+      - 80:80
+    depends_on: 
+      - "app1"
+      - "app2"
+      - "app3"  
+  app1:
+    hostname: app1
+    restart: always
+    build: ./app
+    working_dir: /app
+    volumes:
+      - ./app:/app
+    ports:
+      - 8081:8081
+    command: mvn clean spring-boot:run -Drun.jvmArguments='-Dserver.port=8081'
+  app2:
+    hostname: app2
+    restart: always
+    build: ./app
+    working_dir: /app
+    volumes:
+      - ./app:/app
+    ports:
+      - 8082:8082
+    command: mvn clean spring-boot:run -Drun.jvmArguments='-Dserver.port=8082'
+  app3:
+    hostname: app3
     restart: always
     build: ./app
     working_dir: /app
     volumes:
       - ./app:/app
-    expose:
-      - "8080"
-    command: mvn clean spring-boot:run
+    ports:
+      - 8083:8083
+    command: mvn clean spring-boot:run -Drun.jvmArguments='-Dserver.port=8083'

nginx/nginx.conf

@@ -0,0 +1,11 @@
+upstream my-app {
+    server 172.17.0.1:8081 weight=1;
+    server 172.17.0.1:8082 weight=1;
+    server 172.17.0.1:8083 weight=1;
+}
+
+server {
+    location / {
+        proxy_pass http://my-app;
+    }
+}

nginx/nginx.dockerfile

@@ -0,0 +1,3 @@
+FROM nginx
+RUN rm /etc/nginx/conf.d/default.conf
+COPY /nginx/nginx.conf /etc/nginx/conf.d/default.conf