AWS Elastic Beanstalk / NodeJS / Nginx Error: Keep getting 502 bad gateway

Question

我已经多次部署了我的 web 应用程序，并且一切顺利。

但是自昨天部署以来，每当我尝试访问我的网站时，我总是收到 502 Bad Gateway。

我从 AWS elastic beanstalk 终止了我的应用程序并重新创建，但仍然收到 502 错误网关。

这是我的 nodejs.log:

Error: ENOENT: no such file or directory, open '/var/app/current/config/awsconfig.json'
    at Error (native)
    at Object.fs.openSync (fs.js:642:18)
    at Object.fs.readFileSync (fs.js:510:33)
    at Object.readFileSync (/var/app/current/node_modules/aws-sdk/lib/util.js:97:26)
    at Config.loadFromPath (/var/app/current/node_modules/aws-sdk/lib/config.js:409:39)
    at Object.<anonymous> (/var/app/current/server.js:14:12)
    at Module._compile (module.js:577:32)
    at Object.Module._extensions..js (module.js:586:10)
    at Module.load (module.js:494:32)
    at tryModuleLoad (module.js:453:12)
fs.js:642
  return binding.open(pathModule._makeLong(path), stringToFlags(flags), mode);

这是我的 server.js 中与 nodejs 错误日志相关的部分：

const express = require("express");
const path = require("path");
const fs = require("fs");
const template = require("./public/template");
const bodyParser = require("body-parser");
const _ = require("lodash");
const uuidv1 = require("uuid/v1");

const AWS = require("aws-sdk");
const multer = require("multer");
const multerS3 = require("multer-s3");

// Image Upload
AWS.config.loadFromPath(path.join(__dirname, "/config/awsconfig.json"));
const s3 = new AWS.S3();
const upload = multer({
  storage: multerS3({
    s3,
    bucket: "hackingdeal",
    key: (req, file, cb) => {
      cb(null, new Date().valueOf() + path.extname(file.originalname));
    },
    acl: "public-read-write"
  })
});

仅供参考，"server.js" 文件位于根目录 ("./server.js") 中，awsconfig.json 位于 "./config/awsconfig.json

我做了一个 .gitignore 来忽略 "config/awsconfig.json"。我还创建了一个 .ebignore 但我没有包含 "config/awsconfig.json" 所以我的弹性豆茎可以找到并读取 "config/awsconfig.json" 文件。

这是我的 nginx/error.log:

2018/10/20 23:32:05 [error] 8103#0: *96 connect() failed (111: Connection refused) while connecting to upstream, client: 110.12.50.169, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8081/", host: "hackingdeal-env.4wgwkb9tdv.ap-northeast-2.elasticbeanstalk.com"
2018/10/20 23:32:05 [error] 8103#0: *96 connect() failed (111: Connection refused) while connecting to upstream, client: 110.12.50.169, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8081/favicon.ico", host: "hackingdeal-env.4wgwkb9tdv.ap-northeast-2.elasticbeanstalk.com", referrer: "http://hackingdeal-env.4wgwkb9tdv.ap-northeast-2.elasticbeanstalk.com/"
2018/10/20 23:48:00 [error] 12936#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 110.12.50.169, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8081/", host: "hackingdeal.com"
2018/10/20 23:48:01 [error] 12936#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 110.12.50.169, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8081/favicon.ico", host: "hackingdeal.com", referrer: "http://hackingdeal.com/"

hackingdeal.com 是我的网站。我使用 Route53 服务将该域连接到我的 Elastic Beanstalk，并创建了别名。

事实是，我的应用运行在本地主机上成功运行。

我的应用程序运行在我使用图像上传语句部署 "server.js" 之后成功了（使用 AWS S3 和 multer/multerS3 东西：见上面的代码块

但从昨天开始，它保持 returns 502 错误网关。

我完全迷路了，我不知道从哪里开始，也不知道在哪里可以找到我的问题。请帮助..

Answer 1

我必须阅读日志才能更好地理解您的问题，但您似乎试图从此处/config/awsconfig.json 中的文件

加载您的配置

// Image Upload
AWS.config.loadFromPath(path.join(__dirname, "/config/awsconfig.json"));
const s3 = new AWS.S3();
const upload = multer({
  storage: multerS3({
    s3,
    bucket: "hackingdeal",
    key: (req, file, cb) => {
      cb(null, new Date().valueOf() + path.extname(file.originalname));
    },
    acl: "public-read-write"
  })
});

因此，您必须将此文件上传到您的 ELB。事实上，这就是登录 nodejs.log

的问题

AWS Elastic Beanstalk / NodeJS / Nginx Error: Keep getting 502 bad gateway

AWS Elastic Beanstalk / NodeJS / Nginx Error: Keep getting 502 bad gateway

nginx

amazon-web-services

node.js

multer

amazon-elastic-beanstalk