I am building a RESTful BLogAPP where my stack is MEN
while connecting to mongo server i am getting this error
These were working But this happened
My Mongo file code
const mongoose = require('mongoose');
mongoose.Promise = global.Promise;
const url = "mongodb://localhost/127.0.0.1:27017/Blog";
mongoose.connect(url ,{
useNewUrlParser: true,
useUnifiedTopology: true
})
const db = mongoose.connection;
db.once("open", (_) => {
console.log("Database connected:", url);
});
db.on("error", (err) => {
console.error("connection error:", err);
});
module.exports = mongoose;
My app.js
const mongoose = require("./server/mongoose");
It was resolved for me after remove server port from connection string. Replace mongodb connection string From
const url = "mongodb://localhost:27017/Blog";
To
const url = "mongodb://localhost/Blog";
I got the same error message and I've finally solved it. Try to leave it like this:
const url = "mongodb://localhost:27017/Blog";
I too got the same error while accessing MongoDB via mongoose.
The URI I set was MONGO_URI=mongodb://localhost:3000/myDB.
The port was wrong.
I solved it by correcting the Mongo URI.
MONGO_URI=mongodb://localhost:27017/myDB.
Related
Tried to connect To mongodb, it says connection not found. can someone point out what error I have made in code, is there any problem in db connect URI
const express = require("express");
const mongoose = require("mongoose");
const app = express();
const dotenv = require("dotenv");
dotenv.config();
const db =
"mongodb+srv://<sumit>:<sumit>#bike-ecommerce.u7sod.mongodb.net/myFirstDatabase?retryWrites=true&w=majority";
console.log(db);
mongoose
.connect(db)
.then(() => {
console.log("connection successful");
})
.catch((err) => console.log(err));
app.use(express.json());
//importing routes
const authRoute = require("./routes/auth");
//route middle wares
app.use("/api/user", authRoute);
app.listen(3000, () => console.log("gg server is running"));
This is a snippet from my own application it works there
mongoose.connect(dbUrl).then((dbo)=>{
console.log("DB connected")
},(err)=>{
console.log("error")
});
I have connected like this your then is missing a variable tell me if this dosnt work
Finally found a solution.
Thanks for the help #ahmed ali.
In db uri, username and password should be written without angular brackets and replace the first database with your database name created.
Write down the username and password example:
monggoose.connect('mongodb+srv://name:password#cluster0.cjjucgj.mongodb.net/?retryWrites=true&w=majority')
Here I am using the official mongodb driver btw.
const { MongoClient, ServerApiVersion } = require('mongodb');
const CLient = new MongoClient(process.env.uri, { useNewUrlParser: true, useUnifiedTopology: true, serverApi: ServerApiVersion.v1});
const db = CLient.db("Discord").collection("Discord");
CLient.connect(err => {
//const db = CLient.db("Discord").collection("Discord");
console.log("Connected to the Database")
//CLient.close();
const prefix = await db.find({guildid: msg.guild.id});
await db.updateOne({guildid: msg.guild.id}, {$set: {prefix: newPrefix}});
if (!prefix) {
let prefix = db.insertOne({guildid: msg.guild.id, prefix: newPrefix})
return msg.channel.send(`Your server prefix is now ${newPrefix}`);
}
return msg.channel.send(`Your server prefix is now ${newPrefix}`);
});
msg is already defined here as a object btw and newPrefix is also defined. So the database connected successfully according to the logs. The error is thrown when the code is run
MongoServerError: BSON field 'update.apiVersion' is an unknown field this is the error msg. How can i fix this
I had the same problem. This is related to how you instantiate the client - i.e., this won't fail:
const Client = new MongoClient(process.env.uri);
I am trying to connect to MongoDB but I am getting the "Password contains unescaped characters" error. I have included the useNewUrlParser:true option but I still get the error
See my code below:
const express = require("express");
const app = express();
const mongoose = require("mongoose");
const dotenv = require("dotenv");
dotenv.config();
connectDB().catch(err => console.log(err));
async function connectDB() {
await mongoose.connect(process.env.MONGO_URL, {
useNewUrlParser: true,
})
.then(() => console.log("DB Connection Success"))
.catch((err) => console.log(err));
}
app.listen(8800, () => {
console.log("Backend Server is running");
});
Same problem here... solved with encodeURIComponent on the part of the string that had the password
const uri = "mongodb+srv://username:" + encodeURIComponent("pass#") + "#cluster.yijnb.mongodb.net/db?retryWrites=true&w=majority";
Maybe provide username and password as option:
const options = {
user: <username>,
pass: <password>,
authSource: "admin",
useNewUrlParser: true
};
mongoose.connect(process.env.MONGO_URL, options);
I solved it by changing the password as I tried using several fixes to help me connect with the initial password that contained ".".
Having an issue connecting to MongoDB when starting a new MERN stack project:
server.js code:
const express = require('express');
const cors = require('cors');
const mongoose = require('mongoose');
require('dotenv').config();
const app = express();
const port = process.env.PORT || 5000;
app.use(cors());
app.use(express.json());
const uri = process.env.ATLAS_URI;
mongoose.connect(uri, { useUnifiedTopology: true, useNewUrlParser: true });
const connection = mongoose.connection;
connection.once('open', () => {
console.log("MongoDB database connection established successfully");
})
app.listen(port, () => {
console.log(`Server is running on port: ${port}`);
});
.env file:
ATLAS_URI = mongodb+srv://exampleUser:exampleUserPassword#cluster0.y9bpc.mongodb.net/example-
database?retryWrites=true&w=majority
receiving error:
(node:23036) UnhandledPromiseRejectionWarning: MongoError: Authentication failed.
Not sure what I'm doing wrong here, was just following a tutorial. Only difference from the tutorial is the connection string which also requires a dbname which I created and added. I'm hoping it's something more simple than that. I appreciate any help.
So it appears that I chose to add my own IP address instead of allowing access from anywhere and that was the issue. Hooray!
I'm new in the MEAN developing, I'm developing a simple app, and for my first step I'm trying to connect to my mongodb, so I installed node, express, morgan,mongodb, mongoose.
So here is my code in index.js:
const express = require('express');
const morgan = require('morgan');
const app = express();
const { MongoClient } = require('./database');
// Settings
app.set('port', process.env.PORT || 3000);
// Middlewares
app.use(morgan('dev'));
app.use(express.json());
// Routes
// Starting the server
app.listen(app.get('port'), () => {
console.log('server on port', app.get('port'));
});
and then the code on my database.js:
const MongoClient = require('mongodb').MongoClient;
const uri = "mongodb+srv://duke:<password>#cluster0-dreyi.mongodb.net/test?retryWrites=true&w=majority";
const client = new MongoClient(uri, { useNewUrlParser: true });
client.connect(err => {
const collection = client.db("test").collection("devices");
console.log("horrorrrrrr");
// perform actions on the collection object
client.close();
});
module.exports = MongoClient;
I also try this code that is on the mongodb page to connect to the application:
const MongoClient = require('mongodb').MongoClient;
const uri = "mongodb+srv://duke:<password>#cluster0-dreyi.mongodb.net/test?retryWrites=true&w=majority";
const client = new MongoClient(uri, { useNewUrlParser: true });
client.connect(err => {
const collection = client.db("test").collection("devices");
// perform actions on the collection object
client.close();
});
Of course I change the password to the real one. Please keep in my today it's my first time I touch mongodb and also the MEAN full stack, and I spent too many hours stuck in this connection.
this is the error I get:
(node:5284) 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.
EDIT
#iLiA thanks for your reply ! I tried your code and ain't working, I will show you how I did it with the real password :
const url = 'mongodb+srv://duke:password#cluster0-dreyi.mongodb.net/test?retryWrites=true&w=majority';
const mongoose = require('mongoose');
mongoose.connect(url, {
useNewUrlParser: true,
useCreateIndex: true,
useUnifiedTopology: true,
useFindAndModify: false
})
.then(()=>{
console.log('congrats, problem solved')
})
.catch((err)=>{
console.log(`there is not a problem with ${err.message}`);
process.exit(-1)
})
module.exports = mongoose;
and the error is :
there is not a problem with Server selection timed out after 30000 ms
[nodemon] app crashed - waiting for file changes before starting...
Kind regards,
I am confused about why do you downloaded both mongodb and mongoose but here is mongoose solution
const mongoose = require('mongoose');
mongoose.connect(url, {
useNewUrlParser: true,
useCreateIndex: true,
useUnifiedTopology: true,
useFindAndModify: false
})
.then(()=>{
console.log('congrats, problem solved')
})
.catch((err)=>{
console.log(`there is a problem with ${err.message}`);
process.exit(-1)
})
EDIT:
As it seems you forgot to whitelist your IP address in mongo atlas.