My journey to Certified Kubernetes Administrator (CKA)

The Journey Is More Important Than the Destination.

  • CKA is the most touching exam I have passed.
  • The Journey Is More Important Than the Destination.
  • Fastest practice skills are crutial.
  • Have fun.

My tips

Use kubectl Cheat Sheet

Kubectl autocomplete – BASH

source <(kubectl completion bash) # setup autocomplete in bash into the current shell, bash-completion package should be installed first.
echo "source <(kubectl completion bash)" >> ~/.bashrc # add permanently

You can also use a shorthand alias for kubectl that also works with completion:

alias k=kubectl
complete -F __start_kubectl k

Kubectl apply 

kubectl apply -f ./my-manifest.yaml            # create resource(s)

Interacting with running Pods

# Run pod nginx and write its spec into a file called pod.yaml
kubectl run nginx --image=nginx --dry-run=client -o yaml > pod.yaml

#Better usage with $do
export do="–dry-run=client -o yaml"
kubectl run nginx --image=nginx $do > pod.yaml

Great Vim

vi ~/.vimrc
set ts=2 sw=2 expandtab ruler

Use tmux

A Ctrl+B Cheat Sheet

Session Commands
  • S: List sessions.
Window Commands
  • C: Create a new window.
  • N: Move to the next window.
  • P: Move to the previous window.
Pane Commands
  • %: Create a horizontal split.
  • “: Create a vertical split.
  • X: Close the current pane.

Author: Daniel Micanek

Senior Service Architect, SAP Platform Services Team at TietoEVRY | vExpert ⭐⭐ | vExpert NSX | VCIX-DCV | VCAP-NV Design | VCAP-DCV Design+Deploy | VCP-DCV/NV/CMA | NCIE-DP | OCP | Azure Solutions Architect | Certified Kubernetes Administrator (CKA)