Linux Foundation CKA Exam Dumps

Task Summary

You need to:

SSH into the correct node: cka000055

Use kubectl to list all cert-manager CRDs, and save that list to ~/resources.yaml

Do not use any output format flags like -o yaml

Extract the documentation for the spec.subject field of the Certificate custom resource and save it to ~/subject.yaml

Step-by-Step Instructions

Step 1: SSH into the node

ssh cka000055

Step 2: List cert-manager CRDs and save to a file

First, identify all cert-manager CRDs:

kubectl get crds | grep cert-manager

Then extract them without specifying an output format:

kubectl get crds | grep cert-manager | awk '{print $1}' | xargs kubectl get crd > ~/resources.yaml

This saves the default kubectl get output to the required file without formatting flags.

Step 3: Get documentation for spec.subject in the Certificate CRD

Run the following command:

kubectl explain certificate.spec.subject > ~/subject.yaml

This extracts the field documentation and saves it to the specified file.

If you're not sure of the resource, verify it exists:

kubectl get crd certificates.cert-manager.io

Final Command Summary

ssh cka000055

kubectl get crds | grep cert-manager | awk '{print $1}' | xargs kubectl get crd > ~/resources.yaml

kubectl explain certificate.spec.subject > ~/subject.yaml

kubectl run nginx --image=nginx --restart=Never --port=80

solution

Task Summary

SSH into the correct node: cka000049

Find the highest existing user-defined PriorityClass

Create a new PriorityClass high-priority with a value one less

Patch Deployment busybox-logger (in namespace priority) to use this new PriorityClass

Step-by-Step Solution

1 SSH into the correct node

bash

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ssh cka000049

Skipping this = zero score

2 Find the highest existing user-defined PriorityClass

Run:

bash

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kubectl get priorityclasses.scheduling.k8s.io

Example output:

vbnet

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NAME VALUE GLOBALDEFAULT AGE

default-low 1000 false 10d

mid-tier 2000 false 7d

critical-pods 1000000 true 30d

Exclude system-defined classes like system-* and the default global one (e.g., critical-pods).

Let's assume the highest user-defined value is 2000.

So your new class should be:

Value = 1999

3 Create the high-priority PriorityClass

Create a file called high-priority.yaml:

cat <<EOF > high-priority.yaml

apiVersion: scheduling.k8s.io/v1

kind: PriorityClass

metadata:

name: high-priority

value: 1999

globalDefault: false

description: 'High priority class for user workloads'

EOF

Apply it:

kubectl apply -f high-priority.yaml

4 Patch the busybox-logger deployment

Now patch the existing Deployment in the priority namespace:

kubectl patch deployment busybox-logger -n priority \

--type='merge' \

-p '{'spec': {'template': {'spec': {'priorityClassName': 'high-priority'}}}}'

5 Verify your work

Confirm the patch was applied:

kubectl get deployment busybox-logger -n priority -o jsonpath='{.spec.template.spec.priorityClassName}'

You should see:

high-priority

Also, confirm the class exists:

kubectl get priorityclass high-priority

Final Command Summary

ssh cka000049

kubectl get priorityclass

# Create the new PriorityClass

cat <<EOF > high-priority.yaml

apiVersion: scheduling.k8s.io/v1

kind: PriorityClass

metadata:

name: high-priority

value: 1999

globalDefault: false

description: 'High priority class for user workloads'

EOF

kubectl apply -f high-priority.yaml

# Patch the deployment

kubectl patch deployment busybox-logger -n priority \

--type='merge' \

-p '{'spec': {'template': {'spec': {'priorityClassName': 'high-priority'}}}}'

# Verify

kubectl get deployment busybox-logger -n priority -o jsonpath='{.spec.template.spec.priorityClassName}'

kubectl get priorityclass high-priority

kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like ''creationTimestamp: null'' ''dnsPolicy: ClusterFirst''

vim nginx-prod-pod.yaml

apiVersion: v1

kind: Pod

metadata:

labels:

env: prod

name: nginx-prod

spec:

containers:

- image: nginx

name: nginx-prod

restartPolicy: Always

# kubectl create -f nginx-prod-pod.yaml

kubectl run --generator=run-pod/v1 --image=nginx --

labels=env=dev nginx-dev --dry-run -o yaml > nginx-dev-pod.yaml

apiVersion: v1

kind: Pod

metadata:

labels:

env: dev

name: nginx-dev

spec:

containers:

- image: nginx

name: nginx-dev

restartPolicy: Always

# kubectl create -f nginx-prod-dev.yaml

Verify :

kubectl get po --show-labels

kubectl get po -l env=prod

kubectl get po -l env=dev