LAB 4

Create a service of type NodePort

kubectl apply -f - <<EOF
apiVersion: v1
kind: Service
metadata:
  name: my-nginx-nodeport
  namespace: prod-nginx
spec:
  type: NodePort
  ports:
  - port: 80
    protocol: TCP
  selector:
    app: nginx
EOF

kubectl get svc -n prod-nginx -o wide
NAME                 TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE    SELECTOR
my-nginx-clusterip   ClusterIP   10.99.180.103   <none>        80/TCP         13m    app=nginx
my-nginx-nodeport    NodePort    10.107.221.36   <none>        80:31062/TCP   105s   app=nginx

Try to reach the NodePort

export NODE=$(kubectl get no kind-worker2 -o=jsonpath="{.status.addresses[0].address}")

Note: EKS labs should use th external public IP of a node and open the necessary ports on the securitygroups.
For KIND clusters, run docker run -it –network kind xxradar/hackon to issue the commands

curl http:///127.0.0.1:31062
...
curl http://$NODE:31062

Compare the endpoints of the two services

kubectl get ep my-nginx-clusterip -n prod-nginx -o yaml
...
kubectl get ep my-nginx-nodeport -n prod-nginx -o yaml
...