当我刷新页面时，出现以下三行错误：
2020/10/07 16:38:55 [error] 315270#315270: *7 connect() failed (111: Connection refused) while connecting to upstream, client: 66.249.66.221, server: akadjg.com, request: "GET /robots.txt HTTP/1.1", upstream: "http://127.0.0.1:3000/robots.txt", host: "akadjg.com"
2020/10/07 16:38:58 [error] 315270#315270: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 71.218.84.112, server: akadjg.com, request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:3000/", host: "akadjg.com"
2020/10/07 16:38:58 [error] 315270#315270: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 71.218.84.112, server: akadjg.com, request: "GET /favicon.ico HTTP/1.1", upstream: "http://127.0.0.1:3000/favicon.ico", host: "akadjg.com", referrer: "http://akadjg.com/"
运行“netstat -plant”得到以下结果：
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:27017 0.0.0.0:* LISTEN 315140/mongod
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN -
tcp 0 0 127.0.0.53:53 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
tcp 0 0 0.0.0.0:443 0.0.0.0:* LISTEN -
tcp 0 0 157.245.172.144:42856 172.67.168.253:80 TIME_WAIT -
tcp 0 612 157.245.172.144:22 71.218.84.112:52609 ESTABLISHED -
tcp 0 0 157.245.172.144:80 66.249.66.93:37947 TIME_WAIT -
tcp 0 0 157.245.172.144:22 71.218.84.112:51914 ESTABLISHED -
tcp 0 0 127.0.0.1:27017 127.0.0.1:55302 ESTABLISHED 315140/mongod
tcp 0 0 127.0.0.1:55302 127.0.0.1:27017 ESTABLISHED 315186/node /home/d
tcp6 0 0 :::80 :::* LISTEN -
tcp6 0 0 :::8080 :::* LISTEN 315186/node /home/d
tcp6 0 0 :::22 :::* LISTEN -
tcp6 0 0 :::443 :::* LISTEN -
在 /etc/nginx/sites-available/akadjg.com 中我有：
server {
listen 80;
listen [::]:80;
root /var/www/akadjg.com/html;
index index.html index.htm index.nginx-debian.html;
server_name akadjg.com www.akadjg.com;
location / {
proxy_pass http://localhost:3000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
listen [::]:443 ssl ipv6only=on; # managed by Certbot
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/akadjg.com/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/akadjg.com/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
我哪里做错了？几年前，我在 Ubuntu 14 上运行过这台服务器；这次迭代是在 Ubuntu 20 上。我认为它的配置相同，但也许我在按照 DigitalOcean 上的设置教程时做错了什么。
哦，我的 server.js 文件是：
var express = require('express') //Require express for middleware use
const app = express()
var http = require('http').createServer(app)
var io = require('socket.io')(http) //IO is the server
var bodyParser = require('body-parser')
var MongoClient = require('mongodb').MongoClient
var assert = require('assert')
var mongoose = require('mongoose')
mongoose.set('debug', true)
var url = 'mongodb://localhost:27017/test'
//BASICS
app.use(express.static(__dirname + "/served")) //Serve static files
app.get('/', function(req, res){
res.sendFile('./index.html');
});
io.on('connection', function(socket){
// socket.on('chat message', function(msg){
// io.emit('chat message', msg);
// });
console.log("A user connected: ", socket.id)
});
http.listen(8080, function(){
console.log('listening on *:8080');
});
//HANDLE USER LOGIN:
app.use(bodyParser.json()) // to support JSON-encoded bodies
app.use(bodyParser.urlencoded()) // to support URL-encoded bodies
mongoose.connect(url)
var db = mongoose.connection
db.on('error', console.error)
var User
db.once('open', function() {
var userSchema = mongoose.Schema({
username: String,
level: Number,
onePoRank: Number,
twoPoRank: Number,
type: String,
tutDone: Boolean
})
// userSchema.statics.findOne = function(id, callback){
// return this.findOne({ _id: new RegExp(id, 'i') }, callback);
// }
User = mongoose.model('User', userSchema)
// db.close()
})
app.post('/menu', function(req, res){ // Save new user or load existing one, and send that data back to the client.
var username = req.param('username')
console.log('username "'+username+'" parsed from form')
//check the database for a user with that name:
User.findOne({username: username}, function(err, user){
if (err) {console.log("The user search caused an error")}
if (user === null) {
console.log("No user by name %s found--creating new user", username)
var newUser = new User({username: username, level:0, onePoRank:0, twoPoRank: 0, type: 'human'})
newUser.save(function (err, newUser) { //Add the new user to the database
if (err) return console.error(err);
console.log("New user %s saved to database", username)
res.json(newUser)
})
} else { //User was found in the database
console.log("User %s found.", username)
res.json(user)
}
})
db.once('close', function(){console.log("database closed.")})
// res.sendFile('./menu.html', {root: __dirname+"/served"})
});
app.post('/user', function(req, res){ // Update the user in the database:
var what = req.param('what')
var username = req.param('user').username
// var username = req.param('username')
// console.log('username "'+username+'" parsed from form')
User.findOne({username: username}, function(err, user){
if (err) {console.log("The user search caused an error")}
if (user === null) {
console.log("No user by name %s found. That was unexpected.", username)
} else {
console.log("User %s found. Updating.", username)
user[what] = req.param('user')[what]
user.save(function(err) {
if (err) throw err
console.log('User successfully updated!')
});
}
})
res.json({'a':0}) //just to prevent an empty response error
});
答案1
我必须在 /etc/nginx/sites-available/akadjg.com 中将 3000 替换为 8080。