Chapter 7 – Demystifying Kubernetes networking

You have two virtual machines: master-0 and worker-0. Please complete the following mock scenarios.

Scenario 1

Deploy a new deployment nginx with the latest image of nginx for 2 replicas, in a namespace called packt-app. The container is exposed on port 80. Create a service type ClusterIP within the same namespace. Deploy a sandbox-nginx pod and make a call using curl to verify the connectivity to the nginx service.

Use the following command to create nginx deployment in the targeting namespace:

kubectl create deployment nginx --image=nginx --replicas=2 -n packt-app

Use the following command to expose nginx deployment with a ClusterIP service in the targeting namespace:

kubectl expose deployment nginx --type=ClusterIP --port 8080 --name=packt-svc --target-port 80 -n packt-app

Use the following command to get the internal IP:

kubectl get nodes -o jsonpath='{.items[*].status.addresses[?( @.type==...