docker - Two containers with access to same local port

Question

How can I have two or more containers write data out to localhost on the same port? Is the only way to do this run the destation service in a container as well and have the write clients write to the container's IP/service name?

Specifically, I have 3 containers that are writing data out. I want them to write a local database running on localhost:8086.

question from:https://stackoverflow.com/questions/66055857/two-containers-with-access-to-same-local-port

Answer 1

Do you mean your target database to write with is running on your Host machine? and your clients that would write runs inside the container? If so, you can publish a port from your Host machine to your containers then inside your container, you can access your Host machine's port.

$ docker run --name my-database-client-1 -p 8086:8086 ...

Or, if your database also runs inside the container, it's better to use a network then reference your server-database using its container name i.e. my-database-server:8086.