CKA-Bashrc

bashrc

alias k="kubectl"
alias v="vim"

function ns () {
  kubectl config set-context --current --namespace=$1
}

export drc="--dry-run=client -oyaml"
export drs="--dry-run=server -oyaml"

When I run

echo $drc

it print out this
--dry-run=client -o yaml
but When I run

k run nginx --image=nginx $drc

It throw an error
error: Invalid dry-run value (client -o yaml). Must be "none", "server", or "client".
Note: I'm doing all this on Mac M1 Chip with zsh using ~/.bashrc

Hey Zia, yes variable expansion in zsh behaves a little bit differently to how it behaves in bash. This post explains how you can workaround: https://stackoverflow.com/questions/6715388/variable-expansion-is-different-in-zsh-from-that-in-bash

In the exam the shell will always be bash so you won't need to worry about this problem.

hello @ZiaUrRehman786,
did you try "-oyaml" but not "-o yaml" ?

@kk-mm I tried both and in zsh. nothing work for me. no problem because in cka exam the will be sh

Thanks I will try this and here is what I get

env | grep dr
drc=--dry-run=client -o yaml
drs=--dry-run=server -o yaml
dr=--dry-run -o yaml

k run nginx3 --image=nginx --port=80 $dr
error: unknown flag: --dry-run -o yaml

See 'kubectl run --help' for usage.
➜ ~ k run nginx3 --image=nginx --port=80 --dry-run -o yaml

W0818 19:32:49.776259 16467 helpers.go:703] --dry-run is deprecated and can be replaced with --dry-run=client.
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
run: nginx3
name: nginx3
spec:
containers:

• image: nginx
  name: nginx3
  ports:
  • containerPort: 80
    resources: {}
    dnsPolicy: ClusterFirst
    restartPolicy: Always
    status: {}
    ➜ ~