Mongoose NodeJS macOS Big Sur MongooseServerSelectionError：连接 ECONNREFUSED::1:27017

Question

I'm using brew mongodb-community on macOS Big Sur and can connect to mongo shell with mongosh. But when I try to run NodeJS and Mongoose app I get MongooseServerSelectionError: connect ECONNREFUSED::1:27017 . Why can I connect to mongodb with mongo shell but not NodeJS and Mongoose?

Edit: Sample code from my NodeJS Mongoose code

import mongoose from 'mongoose';
mongoose.connect('mongodb://localhost:27017/mydb', {
    useNewUrlParser: true,
    useUnifiedTopology: true
});

Answer 1

My solution was to use 127.0.0.1 and NOT localhost . For some reason Mongoose can read mongodb://127.0.0.1:27017/mydb and NOT mongodb://localhost:27017/mydb

Answer 2

Your MongoDB Server is not up, Try brew services start mongodb-community@6.0.

if not started kindly follow below commands.

Step-1: install brew from download brew

" At the end brew shows to add path in your terminal "(which many people forget to add)

For reference, The below commands will appear in your terminal: ==> Next steps:

• Run these three commands in your terminal to add Homebrew to your PATH:

echo '# Set PATH, MANPATH, etc., for Homebrew.' >> /Users/xxxx/.zprofile

echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> /Users/xxxxx/.zprofile

eval "$(/opt/homebrew/bin/brew shellenv)"

---

Step-2: install MongoDB:

brew install mongodb-community@6.0

Step-3: Start MongoDB Server:

brew services start mongodb-community@6.0

Please refer MongoDB