I am trying to connect my web servers on Elastic Beanstalk with my database servers on MongoDB Atlas, but somehow I get the following error
Listening at http://:::3001
Unable to connect to the mongodb instance. Error: { MongoNetworkError: failed to connect to server [<server>.mongodb.net:27017] on first connect [MongoNetworkError: connection 5 to <server>.mongodb.net:27017 closed]
at Pool.<anonymous> (/var/app/current/node_modules/mongodb-core/lib/topologies/server.js:431:11)
at Pool.emit (events.js:198:13)
at connect (/var/app/current/node_modules/mongodb-core/lib/connection/pool.js:557:14)
at callback (/var/app/current/node_modules/mongodb-core/lib/connection/connect.js:109:5)
at runCommand (/var/app/current/node_modules/mongodb-core/lib/connection/connect.js:129:7)
at Connection.errorHandler (/var/app/current/node_modules/mongodb-core/lib/connection/connect.js:321:5)
at Object.onceWrapper (events.js:286:20)
at Connection.emit (events.js:198:13)
at TLSSocket.<anonymous> (/var/app/current/node_modules/mongodb-core/lib/connection/connection.js:350:12)
at Object.onceWrapper (events.js:286:20)
at TLSSocket.emit (events.js:198:13)
at _handle.close (net.js:606:12)
at TCP.done (_tls_wrap.js:388:7)
name: 'MongoNetworkError',
errorLabels: [ 'TransientTransactionError' ],
[Symbol(mongoErrorContextSymbol)]: {} }
Listening at http://:::3001
(node:11482) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.
Listening at http://:::3001
I am using mongoose as follows
mongoose.connect('mongodb+srv://<UserName>:<Password>@<cluster>.mongodb.net/test?retryWrites=true&w=majority',
{ useNewUrlParser: true, useUnifiedTopology: true })
.catch(function (reason) {
console.log('Unable to connect to the mongodb instance. Error: ', reason);
});
The problem is not in the IP Whitelist on MongoDB Atlas, since I already ssh'd into the server on elastic beanstalk and from there connected to the Mongo Servers on Atlas directly. The problem is in the code, although I can't seem to see it.
