Docker: container can't connect to MongoDB running on host machine

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Docker: container can't connect to MongoDB running on host machine | Dev Overflow

Sofia Greco

Docker: container can't connect to MongoDB running on host machine

asked 2 months ago

6.2K

I'm running a Node.js app inside Docker and trying to connect to a MongoDB instance running on my host machine. The connection string mongodb://localhost:27017 fails inside the container.

Error: connect ECONNREFUSED 127.0.0.1:27017

I know localhost inside Docker refers to the container itself. How do I properly connect to the host's MongoDB?

docker

mongodb

nodejs

1 Answer

Lena Müller

• answered 1 months ago

Great question! I've run into this before. The key thing to keep in mind is to follow the official documentation closely and test your implementation with edge cases. Happy to elaborate if you need more specifics.