Encountering difficulties: Payload CMS is unable to establish connection with mongo DB

Struggling to set up Payload CMS. When running npm run dev, I encountered an error stating:

ERROR (payload): Error: cannot connect to MongoDB. Details: URI does not have hostname, domain name and tld [nodemon] app crashed - waiting for file changes before starting...

I installed Mongo locally on my machine, choosing the option to run it as a Network Service User and skipping Mongo Compass installation. During Payload's setup, I provided the path to the Mongo database. After creating a new database in Mongo, I selected the "connect to your app" option and copied this snippet:

mongodb+srv://my_db_name:@my_name.something.mongodb.net/myFirstDatabase?retryWrites=true&w=majority

I pasted this snippet where Payload requested it. In my project, there is a .env file which looks like this:

MONGODB_URI = mongodb+srv://my_db_name:my_password@my_name.something.mongodb.net/myFirstDatabase?retryWrites=true&w=majority
PAYLOAD_SECRET = my_super_long_secret_key_thats_not_this

Although I added quotes around the values thinking it might be necessary, I still got the same error. The URI in the .env file contains all required information according to the docs. Following the instruction in the documentation, I tried running node server.js, or in my case server.ts since I'm using TypeScript, but it did not solve the issue. Watching a video tutorial by the creator, I noticed they used yarn dev, so I attempted npm run dev to start the server successfully until the Mongo connection failed. Any ideas on what could be going wrong?

typescriptmongodb

Answer №1

Switch localhost with 127.0.0.1

Illustration:
postgresql://localhost/ -> postgresql://127.0.0.1/

Answer №2

Have you utilized the npx create-payload-app command to create your app? If so, it's recommended to launch the app using npm run dev. The development script contains the PAYLOAD_CONFIG_PATH variable which can be found in the package.json file.

You mentioned that you are using a local MongoDB installation, but your MONGODB_URI resembles an address for MongoDB Atlas service.

  1. For MongoDB Atlas connection - If this is the case, ensure that you have allowed access from your IP address to MongoDB Atlas by following the steps in the Atlas connection guide

  2. Regarding Local MongoDB installation - If you are certain about using the local database, then your address should look something like this: 

    mongodb://root:example@localhost:27017

To manage and perform connection tests on your local MongoDB, consider utilizing MongoDB Compass application as it provides a user-friendly graphical interface.

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