Debian10服务器NodeJS 80端口占用失败：排查求助

环境与问题详情 #

• 服务器：Debian 10云服务器，IP 46.231.206.172，域名magnolian.ch
• 背景：卸载apache2后部署NodeJS服务，此前80端口运行正常，突然出现站点加载超时
• 当前现象：手动启动服务node server.js时，报错Address already in use on port 80；执行lsof -i :80未查到任何占用80端口的进程，恢复两周前的备份文件后问题依旧

代码片段 #

Server.js #

const http = require('http');
const app = require('./app');
const server = http.createServer(app);
server.listen(80);

App.js #

const express = require('express');
const bodyparser = require('body-parser');

const offerRoutes = require('./api/routes/offer');
const contactRoutes = require('./api/routes/contacts');
const userRoutes = require('./api/routes/users');
const aboutRoutes = require('./api/routes/abouts');
const servicesRoutes = require('./api/routes/services');
const newsRoutes = require('./api/routes/news');
const homeRoutes = require('./api/routes/home');
const technoRoutes = require('./api/routes/techno');
const errorRoutes = require('./api/routes/error');

const app = express();

app.use(bodyparser.urlencoded({extended: false}));
app.use(bodyparser.json());

app.set('view engine', 'ejs');
app.set('views', './api/views');
app.use(express.static(__dirname + '/public'));

app.use('/offer', offerRoutes);
app.use('/about', aboutRoutes);
app.use('/services', servicesRoutes);
app.use('/news', newsRoutes);
app.use('/techno', technoRoutes);
app.use('/contact', contactRoutes);
app.use('/user', userRoutes);
app.use('/', homeRoutes);
app.use('/*', errorRoutes);

app.listen(80, '127.0.0.1');

module.exports = app;

补充说明 #

需在周一前解决问题，可提供100美元报酬，支持通过TeamViewer协助排查，Discord联系：Hunter S. Thompson#0275

内容的提问来源于stack exchange，提问作者Roger Schneiter