MongoError: getaddrinfo ENOTFOUND undefined undefined:27017

I think you are not providing the PORT NO. required for mongoDB.

Please give the port no.(27017) along with localhost.

Try this:

var dbURI = "mongodb://127.0.0.1:27017/loc8r";

getaddrinfo ENOTFOUND means client was not able to connect to the given address. Please try with the above address.

I hope this helps.

You just missed specifying the port number as shown:

  var dbURI = "mongodb://localhost:27017/thenDBname"

Make sure to change localhost while hosting on production server.

if you use docker with this problem, I solve that with this solution

I have the same problem, other solutions not work for me but i did that with this way

for mongo URI you must use your mongodb service name instead 127.0.0.1 or localhost

for example in below docker-compose file my mongo service name is mongodb-myapp and i change uri like this mongodb://mongodb-myapp:27017/myapp and it works for me

services:  boilerplate-api-app:    build: .    environment:      - MONGO_URI=mongodb://mongodb-myapp:27017/myapp    volumes:      - .:/app    ports:      - "5000:5000"    depends_on:      - mongodb-myapp mongodb-myapp:    image: mongo    ports:      - "27017:27017"