nginx inside docker: mapping localhost:port in one container to another_container:port
smntov at gmail.com
Wed May 29 11:53:57 UTC 2019
I have a custom network and two containers A and B connected to it.
Container A (with Debian inside) runs nginx and an application that listens
to localhost:8083 and expects certain service there. Once deployed this
service runs in container B and not locally. For certain reasons I can't
change localhost to something else inside the application.
How can I map localhost:8083 from A to name_of_container_B:8083 on the
Docker/nginx/infrastructure/OS level? name_of_container_B is not known
during creation of A image, but I can pass it as docker entrypoint
parameter during launch of conatiner A.
I prefer not to add additional packages in order not to increase overall
complexity. So is it, for example, possible to configure nginx somehow to
listen on localhost:8083 and forward it to name_of_container_B:8083?
I actually use Ansible to start containers, so the solution needs to be
applicable using Ansible?
Link to this question: https://stackoverflow.com/q/56356422/1876484
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