[node.js] MongoDB 연결 오류 : MongoTimeoutError : 30000ms 후에 서버 선택 시간이 초과되었습니다

다음 자습서를 읽는 풀 스택 앱을 만들려고합니다.

https://medium.com/javascript-in-plain-english/full-stack-mongodb-react-node-js-express-js-in-one-simple-app-6cc8ed6de274

나는 모든 단계를 수행 한 다음 실행하려고했습니다.

node server.js

그러나 다음과 같은 오류가 발생했습니다.

MongoDB 연결 오류 : MongoTimeoutError : Timeout._onTimeout (C : \ RND \ fullstack_app \ backend \ node_modules \ mongodb \ lib \ core \ sdam \ server_selection.js : 308 : 9)에서 30000ms 후에 서버 선택 시간이 초과되었습니다 (내부 / processTimers (internal / timers.js : 475 : 7)의 timers.js : 531 : 17) {이름 : ‘MongoTimeoutError’, 이유 : 오류 : TCPConnectWrap.afterConnect의 [oncomplete] (net. EnetDOUT 99.80.11.208:27017에 연결) js : 1128 : 14) {이름 : ‘MongoNetworkError’, [Symbol (mongoErrorContextSymbol)] : {}}, [Symbol (mongoErrorContextSymbol)] : {}} (node ​​: 42892) UnhandledPromiseRejectionWarning : MongoTimeoutError : 30000ms 후에 서버 선택 시간이 초과되었습니다 Timeout._onTimeout에서 (C : \ RND \ fullstack_app \ backend \ node_modules \ mongodb \ lib \ core \ sdam \ server_selection.js : 308 :9) processTimers (internal / timers.js : 475 : 7)의 listOnTimeout (internal / timers.js : 531 : 17)

server.js의 코드는 다음과 같습니다.

const mongoose = require('mongoose');
const router = express.Router();

// this is our MongoDB database
const dbRoute =
    'mongodb+srv://user:<password>@cluster0-3zrv8.mongodb.net/test?retryWrites=true&w=majority';

mongoose.Promise = global.Promise;

// connects our back end code with the database
mongoose.connect(dbRoute,
    {   useNewUrlParser: true,
        useUnifiedTopology: true
    });

let db = mongoose.connection;

db.once('open', () => console.log('connected to the database'));

어떤 제안?

답변

// Import express
let express = require('express');
// Import Body parser
let bodyParser = require('body-parser');
// Import Mongoose
let mongoose = require('mongoose');
// Initialize the app
let app = express();

// Import routes
let apiRoutes = require("./api-routes");
// Configure bodyparser to handle post requests
app.use(bodyParser.urlencoded({
    extended: true
}));
app.use(bodyParser.json());

// Connect to Mongoose and set connection variable
mongoose.connect('mongodb://XXXX:XXXX@cluster0-shard-00-00-ov74c.mongodb.net:27017,cluster0-shard-00-01-ov74c.mongodb.net:27017,cluster0-shard-00-02-ov74c.mongodb.net:27017/test?ssl=true&replicaSet=Cluster0-shard-0&authSource=admin&retryWrites=true&w=majority', {useNewUrlParser: true})
    .then(()=>console.log("DB server connect"))
    .catch(e => console.log("DB error", e));


var db = mongoose.connection;

// Added check for DB connection

if(!db)
    console.log("Error connecting db")
else
    console.log("Db connected successfully")

// Setup server port
var port = process.env.PORT || 8080;

// Send message for default URL
app.get('/', (req, res) => res.send('Hello World with Express'));

// Use Api routes in the App
app.use('/api', apiRoutes);
// Launch app to listen to specified port
app.listen(port, function () {
    console.log("Running RestHub on port " + port);
});