Creating a backend Service

Next, we should deploy a Service that sits in front of the backend Pods. As a recap, every backend Pod inside the backend Deployment will have its own IP address, but these addresses can change as Pods are destroyed and created. Having a Service that sits in front of these Pods allow other parts of the application to access these backend Pods in a consistent manner.

Create a new manifest file at ./manifests/backend/service.yaml with the following content:

apiVersion: v1
kind: Service
metadata:
  name: backend
  labels:
    app: backend
spec:
  selector:
    app: backend
  ports:
  - port: 8080
    name: api
  - port: 8100
    name: docs

And deploy it using kubectl apply:

$ kubectl apply -f ./manifests/backend/service.yaml
service "backend" created

$ kubectl get services
NAME            TYPE        CLUSTER-IP     EXTERNAL...