CKAD Tips and Tricks

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There are a many of these tips. I am highlighting few here which helped me get the grip on Kubernetes.

0 - Practice, Practice and Practice

1 - Use Linux and Learn Vim Editor

Use Linux and Learn the basics of Vim. Exit, save, copy, paste etc. For practice in Linux use vimtutor. My favourite vim must remember things are, command | description — | — :q! | exit without save :wq | save and exit v | select texts d | cut/delete p | paste y | copy A | append at the end of the line dw | delete a word x | delete single char dd | delete line . | repeat last command |

Understand the vim philosophy. Vim is an editor. This is to edit the texts. Use motion commands to make it fast.

Vim Editor CheatSheet [https://vim.rtorr.com/]](https://vim.rtorr.com/)

2 - use Minikube

CKAD does not require cluster level activities. So minikube in a local machine is more than enough to practice. For minikube installation please visit https://minikube.sigs.k8s.io/docs/start/

3 - Use Katacoda

This will help you get used to the sluggy experience of Linux console in browser. So that in exam where the console is loaded the browser has similar experience. https://katacoda.com/

4 - Use kubectl alias

Use alias k=kubectl for faster typing

$ alias k=kubectl

5 - Learn from Kubectl cheatsheet

Kubectl Cheatsheet is a great to way to have a quick view on the few aspects of Kubectl. This is the CLI which would be used in the exam. Kubectl CheatSheet

6 - Use short names for Kubernetes objects

short	long
po	pods
deploy	deployment
pv	persistentvolumes
pvc	persistentvolumeclaims
no	nodes
ns	namespaces
svc	services
cm	configmaps

Also there are few other in cli like

-n # for namespace
-w # for --wait
...

7 - Use dry-run

$ kubectl run web2 --image=nginx --dry-run=client -oyaml > pod.yaml

8 - Delete with no-grace

$ kubectl delete po web --grace-period=0 --force=true

9 - Bookmark difficult parts

Bookmark in the local browser.

10 - kubectl apply/create/delete

$ kubectl apply -f pod.yaml

$ kubectl delete -f pod.yaml

11 - Yaml does not like ‘tab’

No TAB

12 - Cluster context switch

$ kubectl config