I need to connect to an Atlas replica set with mongoose. It's really weird. If I connect via the mongodb-js driver everything works fine. CRUD works like a charm.
Here's how I connect via MongoClient:
let dbURL = 'myAtlasConnectionURL';
let db = await MongoClient.connect(dbURL);
await db.collection('users').insert({name: 'username'});
let result = await db.collection('users').find({});
log.info('result', await result.toArray());
db.collection('users').remove({});
await db.close();
But if use the mongoose connection I keep getting:
MongoError: connection 5 to cluster0-shard-00-02-c4nst.mongodb.net:27017 closed
at Function.MongoError.create (/mypath/vendors/node_modules/mongodb-core/lib/error.js:29:11)
at Socket.<anonymous> (/mypath/vendors/node_modules/mongodb-core/lib/connection/connection.js:202:22)
at Object.onceWrapper (events.js:316:30)
at emitOne (events.js:115:13)
at Socket.emit (events.js:210:7)
at TCP._handle.close [as _onclose] (net.js:548:12)
Here's how I try to connect via mongoose, using the same dbURL as above:
mongoose.connect(dbURL, {
useMongoClient: true
});
I have no idea, what could possibly be wrong.
Related
I am following a tutorial and trying to connect to mongodb, i have two files
the first is server.js with the following codes
const express = require('express');
const mongoose = require('mongoose');
const bodyParser = require('body-parser');
const app = express();
//body parser middleware
app.use(bodyParser.json());
//DB config
const db = require('./config/keys').mongoURI;
//connect to mongo
mongoose
.connect(db,{ useNewUrlParser: true })
.then(()=>console.log('Connected to mongodb...'))
.catch(err=>console.log(err));
const port = process.env.PORT || 5000;
app.listen(port,()=>console.log(`server connected on port ${port}`));
The second is the config file
module.exports = {
mongoURI:'mongodb+srv://denis:password#shoppingapp-wmnbw.mongodb.net/shopping?retryWrites=true&w=majority'
}
what I am trying to achieve is to show on the console connected to mongodb...
instead I am given this error message
server connected on port 5000
(node:35030) 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.
MongoNetworkError: failed to connect to server [shoppingapp-shard-00-01-wmnbw.mongodb.net:27017] on first connect [MongoNetworkError: connection 5 to shoppingapp-shard-00-01-wmnbw.mongodb.net:27017 closed
at TLSSocket.<anonymous> (/home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/connection.js:372:9)
at Object.onceWrapper (events.js:417:26)
at TLSSocket.emit (events.js:310:20)
at net.js:672:12
at TCP.done (_tls_wrap.js:557:7)]
at Pool.<anonymous> (/home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/topologies/server.js:438:11)
at Pool.emit (events.js:310:20)
at /home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/pool.js:561:14
at /home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/pool.js:1008:9
at callback (/home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/connect.js:97:5)
at /home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/connect.js:124:7
at _callback (/home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/connect.js:349:5)
at Connection.errorHandler (/home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/connect.js:365:5)
at Object.onceWrapper (events.js:417:26)
at Connection.emit (events.js:310:20)
at TLSSocket.<anonymous> (/home/denis/Desktop/projects/MERN_SHOPPING_LIST/node_modules/mongodb/lib/core/connection/connection.js:370:12)
at Object.onceWrapper (events.js:417:26)
at TLSSocket.emit (events.js:310:20)
at net.js:672:12
at TCP.done (_tls_wrap.js:557:7)
I have tried to change the driver version but still get the errors, where am I going wrong?
It turns out I was not connecting with the right IP address.
I created a database on my pc and I wanted to create a javascript script using node, which would allow me to access all the database data installed on my pc. I tried to establish a connection between raspberry and my pc locally using the same router. Unfortunately, it always gives me connection errors.
Looking a bit on the internet I found many posts about "bindIp" of mongodb, but despite several tests found the same problem.
network interfaces
net:
port: 27017
#bindIp: 127.0.0.1,192.168.1.8
sorry for my English.
Code raspberry:
var MongoClient = require('mongodb').MongoClient;
var url = "mongodb://168.192.1.6:27017/"; //ip my pc and mongodb
var day = new Date();
MongoClient.connect(url, function(err, db) {
if (err) throw err;
var dbo = db.db("qadrio");
dbo.collection("pin").findOne({}, function(err, result) {
if (err) throw err;
console.log("NAME DEVICE: "+ result.name);
console.log("ERROR: "+ err);
db.close();
});
});
I'm not an expert so I ask for help from you users. I would like to understand how it is done. I think the problem is mongodb itself that blocks external connections except the local ones of the pc.
Error Message
failed to connect to server [168.192.1.6:27017] on first connect [MongoNetworkError: connection 0 to 168.192.1.6:27017 timed out] at Pool. at Pool.emit (events.js:182:13) at Connection. at Object.onceWrapper (events.js:273:13) at Connection.emit (events.js:182:13) at Socket. at Object.onceWrapper (events.js:273:13) at Socket.emit (events.js:182:13) at Socket._onTimeout (net.js:449:8) at ontimeout (timers.js:425:11)
I am pretty new to node.js,am trying to write data to a free online mongo db atlas using mongoose,however i keep getting Authentication failed despite editing mongo db settings to connect from anywhere and also using correct username and password for the db user.
Here is my app.js file where i connect to mongo db
app.js:
const express = require('express');
const morgan = require('morgan');
const bodyParser= require('body-parser');
const mongoose = require('mongoose');
const app = express();
const productRoutes= require('./api/routes/products');
const ordersRoutes= require('./api/routes/orders');
mongoose.connect('mongodb+srv://hilary:'+process.env.MONGO_ATLAS_PW+'#node-rest-dnqwa.mongodb.net/test?retryWrites=true').catch(err => console.log(err));
app.use(morgan('dev'));
app.use(bodyParser.urlencoded({extended:false}));
app.use(bodyParser.json());
app.use((req,res,next) =>{
res.header("Access-Control-Allow-Origin","*");
res.header('Access-Control-Allow-Headers','Origin,X-Requested-With,Content-Type,Accept,Authorization');
if(req.method === 'OPTIONS'){
res.header('Access-Control-Allow-Methods','PUT,POST,GET,DELETE,PATCH');
return res.status(200).json({});
}
next();
});
app.use('/products',productRoutes);
app.use('/orders',ordersRoutes);
app.use((req,res,next) => {
const error= new Error('not found');
error.status = 404;
next(error);
});
app.use((error,req,res,next) =>{
res.status(error.status || 500);
res.json({
error: {
message: error.message
}
})
})
module.exports = app;
i get this error in my terminal:
{ MongoError: authentication fail
at C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\topologies\replset.js:1430:15
at C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\connection\pool.js:877:7
at C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\connection\pool.js:853:20
at finish (C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\auth\scram.js:174:16)
at handleEnd (C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\auth\scram.js:184:7)
at C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\auth\scram.js:289:15
at C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\connection\pool.js:544:18
at process._tickCallback (internal/process/next_tick.js:112:11)
name: 'MongoError',
message: 'authentication fail',
errors:
[ { name: 'node-rest-shard-00-00-dnqwa.mongodb.net:27017',
err: [MongoError] },
{ name: 'node-rest-shard-00-02-dnqwa.mongodb.net:27017',
err: [MongoError] } ] }
I am certain am using correct name and password so why cant it authenticate me,server runs on my localhost
EDIT
So i followed link to docs and now connect this way:
mongoose.connect('mongodb://hilary:'+process.env.MONGO_ATLAS_PW+'#localhost:27017/test').catch(err => console.log(err));
I then get this error in terminal:
{ MongoNetworkError: failed to connect to server [localhost:27017] on first connect [MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017]
at Pool.<anonymous> (C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\topologies\server.js:505:11)
at Pool.emit (events.js:180:13)
at Connection.<anonymous> (C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\connection\pool.js:329:12)
at Object.onceWrapper (events.js:272:13)
at Connection.emit (events.js:180:13)
at Socket.<anonymous> (C:\Users\Hiary\Documents\rest-api\node_modules\mongodb-core\lib\connection\connection.js:245:50)
at Object.onceWrapper (events.js:272:13)
at Socket.emit (events.js:180:13)
at emitErrorNT (internal/streams/destroy.js:64:8)
at process._tickCallback (internal/process/next_tick.js:114:19)
name: 'MongoNetworkError',
message: 'failed to connect to server [localhost:27017] on first connect [MongoNetworkError: connect ECONNREFUSED 127.0.0.1:27017]' }
What worked was a slight variation from the mongoose docs,it was suggested on the Atlas server,for everyone who has Mongodb 3.4+ connect using the regular mongo db driver even when using mongoose, my connection string looks like:
mongoose.connect('mongodb+srv://hilary:<password>#node-rest-dnqwa.mongodb.net').catch(err => console.log(err));
I am working on a small project(REST API) using nodeJs + MongoDB. I have been able to install MongoDB locally and connect to it using mongoose. However for some reason, when I try to connect using MongoDB Atlas it fails. It looks like it connects but then after 2 seconds, I get an error message saying sockets closed(see error below). I have no clue what is going on. I have whitelisted my IP, checked my login info to make sure I am using the correct password and indeed I am using because I am able to connect using MongoDB compass. Any help is greatly appreciated.
My current local ENV package versions are:
nodeJs:V9.7.1
mongoose:V6.1
=== MongoDb Atlas ===
mongodb:3.6
Below is the code that I am using to connect to the database:
var express = require('express'),
port = process.env.PORT || 3000,
mongoose = require('mongoose'),
user = require('./api/models/userModel'),
config = require('./api/config');
bodyParser = require('body-parser');
var authRoutes = require('./api/routes/authRoutes'),
userRoutes = require('./api/routes/userRoutes'),
reviewRoutes = require('./api/routes/reviewRoutes');
const swaggerUi = require('swagger-ui-express');
const swaggerDocument = require('./swagger.json');
mongoose.Promise = global.Promise;
mongoose.connect('mongodb://user:myPass#cluster0-shard-00-00 zd6jq.mongodb.net/myDb');
app.use(bodyParser.urlencoded({extended: true}));
app.use(bodyParser.json());
//Swagger Info
var options = {
explorer : true
};
app.use('/swagger', swaggerUi.serve, swaggerUi.setup(swaggerDocument, options));
//END Swagger Info
//REGISTER ROUTES
userRoutes(app);
authRoutes(app);
reviewRoutes(app);
app.listen(port);
console.log('iReview RESTful API server listenning on port: ' + port);
module.exports = app;
====ERROR MESSAGE ===
/Users/mdiez/node_test/node_modules/mongodb/lib/server.js:228
process.nextTick(function() { throw err; })
^
MongoError: server cluster0-shard-00-00-zd6jq.mongodb.net:27017 sockets closed
at Pool.<anonymous> (/Users/mdiez/node_test/node_modules/mongodb-core/lib/topologies/server.js:325:47)
at Object.onceWrapper (events.js:219:13)
at Pool.emit (events.js:127:13)
at Connection.<anonymous> (/Users/mdiez/node_test/node_modules/mongodb-core/lib/connection/pool.js:101:12)
at Object.onceWrapper (events.js:219:13)
at Connection.emit (events.js:127:13)
at Socket.<anonymous> (/Users/mdiez/node_test/node_modules/mongodb-core/lib/connection/connection.js:142:12)
at Object.onceWrapper (events.js:219:13)
at Socket.emit (events.js:127:13)
at TCP._handle.close [as _onclose] (net.js:558:12)
var uri = 'mongodb://<usernamr>:<password>#<clustername>/<dbname>?ssl=true&replicaSet=<replica setname>&authSource=admin';
var db = mongoose.connect(uri).catch((error) => { console.log(error); });
Specify the replica set name, ssl true and authentication database. This is based on reference from Atlas documentation.
You can use this code to connect to Compass and Application. You just need to the following:
replace all the three primary and secondary shard from Cluster -> Overview
replace natours-app with your cluster name.
Compass:
mongodb://babar_bahadur:PASSWORD#natours-app-shard-00-00-ybksz.mongodb.net:27017,natours-app-shard-00-01-ybksz.mongodb.net:27017,natours-app-shard-00-02-ybksz.mongodb.net:27017/test?authSource=admin&replicaSet=natours-app1-shard-0&readPreference=primary&appname=MongoDB%20Compass&retryWrites=true&ssl=true
Application:
mongodb://babar_bahadur:PASSWORD#natours-app-shard-00-00-ybksz.mongodb.net:27017,natours-app-shard-00-01-ybksz.mongodb.net:27017,natours-app-shard-00-02-ybksz.mongodb.net:27017/test?ssl=true&replicaSet=natours-app-shard-0&authSource=admin&retryWrites=true
I have a simple Node.js that uses mongoose to connect with Mongo database hosted on mLab.
Everything seems working just fine: adding new records, querying for existing stuff.
Only sometimes, after some period of inactivity, when I look at the console I see the following:
events.js:160
throw er; // Unhandled 'error' event
^
Error: connection timeout
at Db.<anonymous> (___PATH___/node_modules/mongoose/lib/drivers/node-mongodb-native/connection.js:168:17)
at emitTwo (events.js:106:13)
at Db.emit (events.js:191:7)
at Server.listener (___PATH___/node_modules/mongodb/lib/db.js:1786:14)
at emitOne (events.js:96:13)
at Server.emit (events.js:188:7)
at Server.<anonymous> (___PATH___/node_modules/mongodb/lib/server.js:274:14)
at emitOne (events.js:96:13)
at Server.emit (events.js:188:7)
at Pool.<anonymous> (___PATH___/node_modules/mongodb-core/lib/topologies/server.js:334:12)
at emitOne (events.js:96:13)
at Pool.emit (events.js:188:7)
at Connection.<anonymous> (___PATH___/node_modules/mongodb-core/lib/connection/pool.js:270:12)
at Connection.g (events.js:292:16)
at emitTwo (events.js:106:13)
at Connection.emit (events.js:191:7)
Right now it doesn't matter that much to me - I can always restart the app. I'm worried that in production it will cause a lot of headaches so I preemptively ask what's the issue here?
Note that initially everything is working fine, it after some time when I get Error: connection timeout
Sample Connection code for Mongo-Node using Mongoose
var mongoose = require('mongoose');
mongoose.Promise = require('bluebird');
const options = {
useMongoClient: true,
reconnectTries: 5000,
reconnectInterval: 0,
socketTimeoutMS: 100000,
connectTimeoutMS: 100000
}
mongoose.connect(mongodb://........, options);
var db = mongoose.connection;
db.on('error', function (error) {
console.log('Error while connecting to mongodb database:', error);
});
db.once('open', function () {
console.log('Successfully connected to mongodb database');
});
db.on('disconnected', function () {
//Reconnect on timeout
mongoose.connect(mongodb://........, options);
db = mongoose.connection;
});
it seems that there is fluctuation in your internet connection. Maybe this is the reason of connection timeout.
you can handle it by setting the timeout.
As below :
var timeout = require('connect-timeout');
app.use(timeout('5s'));`
in your app.js file
Replace your mongoose connection setting by this code:
var mongoose = require('mongoose');
/*
* Mongoose by default sets the auto_reconnect option to true.
* We recommend setting socket options at both the server and replica set level.
* We recommend a 30 second connection timeout because it allows for
* plenty of time in most operating environments.
*/
var options = { server: { socketOptions: { keepAlive: 300000, connectTimeoutMS: 30000 } },
replset: { socketOptions: { keepAlive: 300000, connectTimeoutMS : 30000 } } };
var mongodbUri = 'mongodb://user:pass#host:port/db';
mongoose.connect(mongodbUri, options);
var conn = mongoose.connection;
conn.on('error', console.error.bind(console, 'connection error:'));
conn.once('open', function() {
// Wait for the database connection to establish, then start the app.
});