How can I expose my Hasura microservice on multiple ports? - kubernetes

Question

My microservice has multiple containers, each of which needs access to a different port. How do I expose this service on multiple ports using the Hasura CLI and project configuration files?
Edit: Adding the microservice's k8s.yaml (as requested by #iamnat)
Let's say I have two containers, containerA and containerB, that I want to expose over HTTP on ports 6379 and 8000 respectively.
apiVersion: v1
items:
- apiVersion: extensions/v1beta1
kind: Deployment
metadata:
creationTimestamp: null
labels:
app: www
hasuraService: custom
name: www
namespace: '{{ cluster.metadata.namespaces.user }}'
spec:
replicas: 1
strategy: {}
template:
metadata:
creationTimestamp: null
labels:
app: www
spec:
containers:
- name: containerA
image: imageA
ports:
- containerPort: 6379
- name: containerB
image: imageB
ports:
- containerPort: 8000
securityContext: {}
terminationGracePeriodSeconds: 0
status: {}
- apiVersion: v1
kind: Service
metadata:
creationTimestamp: null
labels:
app: www
hasuraService: custom
name: www
namespace: '{{ cluster.metadata.namespaces.user }}'
spec:
ports:
- port: 6379
name: containerA
protocol: HTTP
targetPort: 6379
- port: 8000
name: containerB
protocol: HTTP
targetPort: 8000
selector:
app: www
type: ClusterIP
status:
loadBalancer: {}
kind: List
metadata: {}

Answer 1

TL;DR:
- Add an API gateway route for each HTTP endpoint you want to expose [docs]
Inside the kubernetes cluster, give your k8s spec this is what your setup will look like:
http://www.default:8000 -> containerA
http://www.default:6379 -> containerB
So you need to create a route for each of those HTTP paths in conf/routes.yaml.
www-a:
/:
upstreamService:
name: www
namespace: {{ cluster.metadata.namespaces.user }}
upstreamServicePath: /
upstreamServicePort: 8000
corsPolicy: allow_all
www-b:
/:
upstreamService:
name: www
namespace: {{ cluster.metadata.namespaces.user }}
upstreamServicePath: /
upstreamServicePort: 6379
corsPolicy: allow_all
This means that, you'll get the following:
https://www-a.domain.com -> containerA
https://www-a.domain.com -> containerB