Connect to host mongodb from docker container

Question

So I want to connect to my mongodb running on my host machine (DO droplet, Ubuntu 16.04). It is running on the default 27017 port on localhost.

I then u

Answer 1

change the bindIp from 127.0.0.1 to 0.0.0.0 in /etc/mongod.conf. Then it will work

Answer 2

You can use: 172.17.0.1 as it is the default host ip that the containers can see. But you need to configure Mongo to listen to 0.0.0.0.

From docker 18.03 onwards the recommendation is to connect to the special DNS name host.docker.internal

For previous versions you can use DNS names docker.for.mac.localhost or docker.for.windows.localhost.