I'm trying to run a docker-compose with an exist mongodb container.
In my docker-compose I made this:
version: '2'
services:
web:
volumes:
- .:/app
external_links:
- mongo
volumes:
data:
external: true
I'm running mongodb with this command:
docker run -d -p 27017:27017 -v /docker/mongo/data:/data/db --name mongo mongo
In normal links in docker-compose, when you run curl mongo, I can connect the mongodb. But I want to use the same mongodb for two different projects.
Using external_links, if I cannot connect mongodb. How can I use external_links in correct way?
Thanks for this.
You are using version 2 of docker-compose, which means linking is handled differently than in older versions. All services started using docker-compose up will be part of a common network. You can specify that network, or docker-compose will create it automatically for you. In order to link to your mongodb container, you need to pass in the --network flag when you start it.
References:
docker run: https://docs.docker.com/engine/reference/commandline/run/#/connect-a-container-to-a-network---network