Nodejs 502 Bad Gateway在Elastic Beanstalk AWS上部署Express

Question

我將節點js應用程序部署到AWS EBS。 當我運行應用程序時，我收到錯誤“502 Bad Gateway”nginx / 1.6.2。 這是我在日志中發現的。

 2016/08/13 08:46:03 [warn] 14418#0: duplicate MIME type "text/html" in /etc/nginx/conf.d/00_elastic_beanstalk_proxy.conf:42 2016/08/13 09:22:25 [error] 14421#0: *2 connect() failed (111: Connection refused) while connecting to upstream, client: 118.36.218.138, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8081/", host: "cider-1.siwrszgawk.ap-northeast-1.elasticbeanstalk.com" 2016/08/13 09:22:25 [error] 14421#0: *2 connect() failed (111: Connection refused) while connecting to upstream, client: 118.36.218.138, server: , request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:8081/favicon.ico", host: "cider-1.siwrszgawk.ap-northeast-1.elasticbeanstalk.com", referrer: "http://cider-1.siwrszgawk.ap-northeast-1.elasticbeanstalk.com/" 

我為此花了一天的時間。 我發現了一些很好的解決方案。 在這里輸入鏈接描述 （這是同樣的問題），但它不能處理我的代碼。（我嘗試了最多選擇的重命名解決方案）雖然我已經閱讀了StackOverflow上的其他資源，這表明我將主文件從app.js重命名為main。 js並將端口設置在bin / www文件夾中，我覺得這不是我的應用程序的解決方案。

 { "name": "cidermics", "version": "0.0.1", "private": true, "scripts": { "start": "node main.js" }, "dependencies": { "body-parser": "~1.13.2", "cookie-parser": "~1.3.5", "debug": "~2.2.0", "ejs": "~2.3.3", "express": "~4.13.1", "file-system": "^2.2.1", "formidable": "^1.0.17", "morgan": "~1.6.1", "multer": "^1.1.0", "node-dir": "^0.1.11", "serve-favicon": "~2.3.0", "xhr": "^2.2.0", "passport" : "*", "passport-local" : "*", "connect-flash" : "*", "express-session" : "*", "req-flash" : "*" } } 

它是main.js我將名稱從app.js更改為main.js

 var express = require('express'); var path = require('path'); var favicon = require('serve-favicon'); var logger = require('morgan'); var cookieParser = require('cookie-parser'); var bodyParser = require('body-parser'); var debug = require('debug')('cidermics:server'); var http = require('http'); var passport = require('passport') , LocalStrategy = require('passport-local').Strategy; var mysql = require("./routes/model/mysql"); var flash = require('req-flash'); var session = require('express-session'); var routes = require('./routes/index'); var users = require('./routes/users'); var admin = require('./routes/admin'); //route add var about = require('./routes/about'); var cmn = require('./routes/cmn'); var consulting = require('./routes/consulting'); var contents = require('./routes/contents'); var member = require('./routes/member'); var app = express(); // view engine setup app.set('views', path.join(__dirname, 'views')); app.set('view engine', 'ejs'); // uncomment after placing your favicon in /public //app.use(favicon(path.join(__dirname, 'public', 'favicon.ico'))); app.use(logger('dev')); app.use(bodyParser.json()); app.use(bodyParser.urlencoded({ extended: false })); app.use(cookieParser()); app.use(express.static(path.join(__dirname, 'public'))); app.use(session({ secret: 'fortt', resave: true, saveUninitialized: true })) app.use(passport.initialize()); app.use(passport.session()); //express.static ADD app.use('/cid_about', express.static(__dirname + '/views/cid_about')); app.use('/cid_cmn', express.static(__dirname + '/views/cid_cmn')); app.use('/cid_consulting', express.static(__dirname + '/views/cid_consulting')); app.use('/cid_contents', express.static(__dirname + '/views/cid_contents')); app.use('/cid_member', express.static(__dirname + '/views/cid_member')); app.use(flash()); app.use('/', routes); app.use('/users', users); app.use('/adm', admin); //app.get app.use('/',about); app.use('/',cmn); app.use('/',consulting); app.use('/',contents); app.use('/',member); passport.use('local', new LocalStrategy({ usernameField : 'email', passwordField : 'pw', passReqToCallback : true } ,function(req, email, pw, done) { mysql.select('select * from cider.cid_user where user_email ="'+email+'" and user_password = "'+pw+'"', function (err, data){ console.log("data"); console.log(data.length); if(data.length < 1){ console.log('fail'); return done(null, false); }else { console.log('success'); return done(null, data); } if(err){ res.redirect('back'); } }); } )); passport.serializeUser(function(user, done) { done(null, user); // if you use Model.id as your idAttribute maybe you'd want // done(null, user.id); }); passport.deserializeUser(function(user, done) { done(null, user); }); // catch 404 and forward to error handler app.use(function(req, res, next) { var err = new Error('Not Found'); err.status = 404; next(err); }); // error handlers // development error handler // will print stacktrace if (app.get('env') === 'development') { app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: err }); }); } // production error handler // no stacktraces leaked to user app.use(function(err, req, res, next) { res.status(err.status || 500); res.render('error', { message: err.message, error: {} }); }); app.set('port', process.env.PORT || 80); var server = app.listen(app.get('port'), function() { //http.createServer(app).listen(app.get('port'), function(){ // console.log('Express server listening on port ' + app.get('port')); debug('Express server listening on port ' + server.address().port); }); 

 /var/log/nodejs/nodejs.log ------------------------------------- npm ERR! Linux 4.4.14-24.50.amzn1.x86_64 npm ERR! argv "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/node" "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/npm" "start" npm ERR! node v4.4.6 npm ERR! npm v2.15.5 npm ERR! code ELIFECYCLE npm ERR! cidermics@0.0.1 start: `node app.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the cidermics@0.0.1 start script 'node app.js'. npm ERR! This is most likely a problem with the cidermics package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node app.js npm ERR! You can get information on how to open an issue for this project with: npm ERR! npm bugs cidermics npm ERR! Or if that isn't available, you can get their info via: npm ERR! npm ERR! npm owner ls cidermics npm ERR! There is likely additional logging output above. npm ERR! Linux 4.4.14-24.50.amzn1.x86_64 npm ERR! argv "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/node" "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/npm" "start" npm ERR! node v4.4.6 npm ERR! npm v2.15.5 npm ERR! path npm-debug.log.3664877195 npm ERR! code EACCES npm ERR! errno -13 npm ERR! syscall open npm ERR! Error: EACCES: permission denied, open 'npm-debug.log.3664877195' npm ERR! at Error (native) npm ERR! { [Error: EACCES: permission denied, open 'npm-debug.log.3664877195'] npm ERR! errno: -13, npm ERR! code: 'EACCES', npm ERR! syscall: 'open', npm ERR! path: 'npm-debug.log.3664877195' } npm ERR! npm ERR! Please try running this command again as root/Administrator. npm ERR! Please include the following file with any support request: npm ERR! /var/app/current/npm-debug.log > cidermics@0.0.1 start /var/app/current > node app.js /var/app/current/node_modules/multer/node_modules/mkdirp/index.js:90 throw err0; ^ Error: EACCES: permission denied, mkdir '/var/app/public' at Error (native) at Object.fs.mkdirSync (fs.js:794:18) at sync (/var/app/current/node_modules/multer/node_modules/mkdirp/index.js:71:13) at Function.sync (/var/app/current/node_modules/multer/node_modules/mkdirp/index.js:77:24) at new DiskStorage (/var/app/current/node_modules/multer/storage/disk.js:21:12) at module.exports (/var/app/current/node_modules/multer/storage/disk.js:65:10) at new Multer (/var/app/current/node_modules/multer/index.js:15:20) at multer (/var/app/current/node_modules/multer/index.js:88:12) at Object.<anonymous> (/var/app/current/routes/admin.js:8:14) at Module._compile (module.js:409:26) npm ERR! Linux 4.4.14-24.50.amzn1.x86_64 npm ERR! argv "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/node" "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/npm" "start" npm ERR! node v4.4.6 npm ERR! npm v2.15.5 npm ERR! code ELIFECYCLE npm ERR! cidermics@0.0.1 start: `node app.js` npm ERR! Exit status 1 npm ERR! npm ERR! Failed at the cidermics@0.0.1 start script 'node app.js'. npm ERR! This is most likely a problem with the cidermics package, npm ERR! not with npm itself. npm ERR! Tell the author that this fails on your system: npm ERR! node app.js npm ERR! You can get information on how to open an issue for this project with: npm ERR! npm bugs cidermics npm ERR! Or if that isn't available, you can get their info via: npm ERR! npm ERR! npm owner ls cidermics npm ERR! There is likely additional logging output above. npm ERR! Linux 4.4.14-24.50.amzn1.x86_64 npm ERR! argv "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/node" "/opt/elasticbeanstalk/node-install/node-v4.4.6-linux-x64/bin/npm" "start" npm ERR! node v4.4.6 npm ERR! npm v2.15.5 npm ERR! path npm-debug.log.1654992227 npm ERR! code EACCES npm ERR! errno -13 npm ERR! syscall open npm ERR! Error: EACCES: permission denied, open 'npm-debug.log.1654992227' npm ERR! at Error (native) npm ERR! { [Error: EACCES: permission denied, open 'npm-debug.log.1654992227'] npm ERR! errno: -13, npm ERR! code: 'EACCES', npm ERR! syscall: 'open', npm ERR! path: 'npm-debug.log.1654992227' } npm ERR! npm ERR! Please try running this command again as root/Administrator. npm ERR! Please include the following file with any support request: npm ERR! /var/app/current/npm-debug.log 

Answer 1

您的依賴項multer正在運行命令mkdir 。 但由於它是調用此節點的節點進程，並且節點進程沒有運行shell命令的權限，因此拋出錯誤。

multer有多重要？ 您的代碼段不會顯示您使用它。 也許你可以刪除它？

這是一個相關的問題 。