node.js - Elastic Beanstalk nginx 代理抛出 502 Bad Gateway

Question

我有一个简单的 MEAN 应用程序，我使用 Mongo 图像和 Node + Express 图像组成。我使用 Elastic Beanstalk 创建 Docker 应用程序。我能够成功创建一个环境。 EB 仪表板告诉我应用程序和环境均已成功创建。

但是，我的 EB 实例的 URL 给出了 502 Bad Gateway。我研究了与 Beanstalk 相关的此错误并进行了各种尝试:

• 向 .ebextensions/node-command.config 添加 NodeCommand: "npm start" 属性，这给了我一个重复或无效属性错误。

• 模仿此存储库中详细介绍的项目启动方式:https://github.com/shippableSamples/sample_node_eb_docker/tree/tutorial我正在遵循本教程； http://blog.shippable.com/how-to-deploy-to-elastic-beanstalk-part-2 ，以上述项目为例。基本上，我将 app.listen 代码移至 bin/www

下

这些方法都不起作用。

我的Dockerfile

FROM node:7
RUN mkdir -p /usr/src/rishighan

WORKDIR /usr/src/rishighan

COPY package.json /usr/src/rishighan
COPY bower.json /usr/src/rishighan

#Install dependencies
RUN npm i -g bower  && \
npm i  && \
bower i --config.interactive=false --allow-root

RUN npm rebuild node-sass

COPY . /usr/src/rishighan
EXPOSE 80

# This starts the app
CMD npm start

docker-compose.yml

# find a way to seed the mongo db
version: '3.2'
services:
  mongodb:
    build:
      context: ./
      dockerfile: mongo-seed/Dockerfile
  web:
    build: .
    command: node server.js
    volumes:
      - .:/usr/src/rishighan
    ports:
      - "3000:3000"
    links:
     - mongodb
    environment:
      PORT: 3000 # this is optional, allows express to use process.env.PORT instead of a raw 3000

Dockerrun.aws.json

 {
  "AWSEBDockerrunVersion": "1",
  "Image": {
  "Name": "frishi/rishighanangular_web:nativeEBDeployment",
  "Update": "true"
 },
 "Ports": [
  {
    "ContainerPort": "80"
  }
 ],
  "Volumes": [
 ]
}

我的package.json的相关部分

  "scripts": {
    "dev": "webpack-dev-server --content-base app/ --hot --inline",
    "start": "webpack -w --debug --devtool eval --output-pathinfo",
    "local-dev": "node server.js",
    "test": "testem ci"
  }

我的server.js的相关部分

// Start Server on 3000
let port = process.env.PORT || 3000;
app.listen(port, function () {
    console.log("Server listening on port ", port);
});

我还在 SO 上找到了一个答案，建议在 Beanstalk 设置之前覆盖 nginx.conf 。我能够从 EB 下载日志，如下所示:

nginx错误.log

2017/07/24 12:10:47 [error] 3378#0: *8824 connect() failed (111: Connection refused) while connecting to upstream, client: 10.65.133.248, server: , request: "GET / HTTP/1.1", upstream: "http://172.17.0.2:80/", host: "54.243.122.6"
2017/07/24 13:27:16 [error] 3378#0: *9903 connect() failed (111: Connection refused) while connecting to upstream, client: 10.164.151.69, server: , request: "GET /xmlrpc.php HTTP/1.1", upstream: "http://172.17.0.2:80/xmlrpc.php", host: "54.197.241.240"
2017/07/24 13:29:18 [error] 3378#0: *9946 connect() failed (111: Connection refused) while connecting to upstream, client: 10.164.151.69, server: , request: "GET / HTTP/1.1", upstream: "http://172.17.0.2:80/", host: "54.197.241.240"
2017/07/24 14:17:28 [error] 3378#0: *10615 connect() failed (111: Connection refused) while connecting to upstream, client: 10.65.133.248, server: , request: "GET / HTTP/1.1", upstream: "http://172.17.0.2:80/", host: "rishighan-angular-dev.us-east-1.elasticbeanstalk.com"
2017/07/24 14:17:28 [error] 3378#0: *10615 connect() failed (111: Connection refused) while connecting to upstream, client: 10.65.133.248, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://172.17.0.2:80/favicon.ico", host: "rishighan-angular-dev.us-east-1.elasticbeanstalk.com", referrer: "http://rishighan-angular-dev.us-east-1.elasticbeanstalk.com/"

如果您能指出从哪里开始寻找错误的潜在原因，我将不胜感激。

Answer 1

我自己也有类似的问题，问题是nginx默认连接到端口8081上的node.js。我可以在您的代码中看到您默认尝试监听端口 3000。