I've build a npm react-app that connects to a REST-backend using a given url. To run the app on kubernetes, I've distributed the app and put it into an nginx container. The app starts nicely, but I want to make the backend url configurable without having to rebuild the container image every time. I don't know how to do that or where to search for, any help would be appreciated
Ingress. If the react app and the rest backend are both hosted on kubernetes, I recommend using a relative path for the REST backend http://myurl for app, http://myurl/service for the backend. Then use ingress to map the /service path to the REST service. Your react app just points to /service and doesn't care about url you are hosting on.
You have several methods to achieve your objective
apiVersion: v1
kind: Pod
metadata:
name: pod-name
spec:
containers:
- name: envar-demo-container
image: my_image:my_version
env:
- name: BACKEND_URL
value: "http://my_backend_url"Regards.