CODEWITHSUNDEEP
network-programmingdockerdocker-compose
Kaan Demirel
Kaan Demirel

Reputation: 180

REST request across networks

Let's say I have two docker networks on the same machine. (Network-1 and Network-2)

On each network, I have containers. (Container-1-Network-1 and Container-1-Network-2 etc.)

I need to send a PUT request from Container-1(172.18.0.x) to Container-2 (172.19.0.x) but I get 'connection refused' because different networks can't communicate with each other. What are my options here? Can I move a container to another network, or merge networks into one or link containers somehow (in docker-compose.yml)?

Thanks.

Upvotes: 0

Views: 44

Answers (1)

BMitch
BMitch

Reputation: 263666

Ideally, you should add the container to every network where it needs to communicate with other containers and each network should be isolated from each other. This is the default design of docker networking.

To add containers to another network, use:

docker network connect $network $container

An easier method when you have lots of containers to manage is to use docker compose to define which networks each container needs to belong to. This automates the docker network connect commands.

Upvotes: 1

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