CODEWITHSUNDEEP
dockerdocker-network
Always a newComer
Always a newComer

Reputation: 561

Docker Inter-container communication without port number

I have 2 docker containers(container name : A & B) on 1 host & they are connected to same user-defined bridge(test-bridge).

Target state/Trying to achieve:
To be able to call container B from container A via hostname only & not hostname:port.
Current State:
I am able to call API's hosted inside container B via url http://{{containerName:portNumber} i.e. http://B:6000 from container A.
I want to get rid of the port number because IMO being connected on the same network along-with the container name should be sufficient enough to resolve the request to target container.
Is there a way for inter-container communication via this approach

UPDATE
Still looking for a solution as the package that I am working on would be a core utility(at-least 3 containers), this would be deployed with other docker apps. The port number 80 would only help 1 container only but to call other utilities the caller would need to attach port number that I can't expose as it is an infra/network level information.

Upvotes: 0

Views: 562

Answers (1)

ItayB
ItayB

Reputation: 11337

You can use HTTP default port (80) and then you won't have to specify it.

Change your app B to listen on port 80 - then you'll be able to call http://B without adding port number.

Upvotes: 1

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