lab-18.md

Lab 18 - Ingress

Documenation

• https://kubernetes.io/docs/concepts/services-networking/ingress/ (search: ingress)

Task 1 - Create a Service to Expose the web-auth Deployment

Check out the deployment:

kubectl get deployment web-auth -o yaml

Note the web-auth label on our Pods. We'll use this label to select these Pods using our Service.

Create a web-auth-svc.yml file:

vi web-auth-svc.yml

Paste the following YAML definitions:

apiVersion: v1
kind: Service
metadata:
  name: web-auth-svc
spec:
  type: ClusterIP
  selector:
    app: web-auth
  ports:
    - name: http
      protocol: TCP
      port: 80
      targetPort: 80

Create the Service:

kubectl create -f web-auth-svc.yml

Task 2 - Create an Ingress That Maps to the New Service

Create a web-auth-ingress.yml file:

vi web-auth-ingress.yml

Add the following YAML definitions:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: web-auth-ingress
spec:
  rules:
  - http:
      paths:
      - path: /auth
        pathType: Prefix
        backend:
          service:
            name: web-auth-svc
            port:
              number: 80

Create the Ingress:

kubectl create -f web-auth-ingress.yml

Check the status of the Ingress:

kubectl describe ingress web-auth-ingress

Note the service endpoints in the Backends section of the output. You have successfully created an Ingress that maps to the backend Service.