Kubernetes CKAD Example Exam Questions Practical Challenge Series

CKS Exam Series | CKA Exam Series | CKAD Exam Series

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THIS CHALLENGE WON’T BE UPDATED HERE AND MOVED TO:

https://killercoda.com/killer-shell-ckad

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Why?

CKAD is all about the practical experience with Kubernetes which I like about this certificate. Also apart from the certificate having not just theoretical knowledge is awesome… and fun!

Challenges:

Overview and Tips

1. Creating Pods
2. Namespaces, Deployments and Services
3. CronJobs and Volumes
4. Deployment Rollout Rollback
5. Secrets and ConfigMaps
6. NetworkPolicy
7. Service Migration
8. (moved to CKA challenge series)
9. Logging Sidecar
10. Deployment Hacking
11. SecurityContexts
12. Various Environment Variables
13. ReplicaSet without Downtime

More Challenges

For a completely simulated environment check out the:

https://killer.sh

How to be efficient?

Be fast with Kubectl ≥ 1.18

You can configure Kubernetes in different ways, you can write a yaml file from scratch and then kubectl create it, but this takes time.

Or you can use kubectl run to create your object directly using mostly default values, then you can output the yaml with something like kubectl get pod my-pod -o yaml --export and further adjust it. Or even use kubectl create --dry-run -o yaml to not even create objects.

Or you wget an example yaml from the Kubernetes docs and adjust it.

Monitor your cluster

I usually run this command all the time in an open Terminal to always check what’s happening in my cluster:

watch -n 0.5 "kubectl config current-context; echo ''; kubectl config view | grep namespace; echo ''; kubectl get namespace,node,ingress,pod,svc,job,cronjob,deployment,rs,pv,pvc,secret,ep -o wide"

It prints out the current context, namespace and then all possible Kubernetes objects.