CKA Practice Questions

kubect1 get pods--sort-by=.metadata.creationTimestamp

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\5

B.  

F:\Work\Data Entry Work\Data Entry\20200827\CKA\5

C.  

F:\Work\Data Entry Work\Data Entry\20200827\CKA\5

D.  

kubect1 get po nginx-dev -o

jsonpath='{.spec.containers[].image}{"\n"}'

kubectl get po –all-namespaces > /opt/pods-list.yaml

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\8

B.  

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\10

B.  

F:\Work\Data Entry Work\Data Entry\20200827\CKA\10

C.  

Task Summary

SSH into cka000048b

Update the nginx-config ConfigMap in the nginx-static namespace to allow TLSv1.2

Ensure the nginx-static Deployment picks up the new config

Verify the change using the provided curl command

Step-by-Step Instructions

Step 1: SSH into the correct host

ssh cka000048b

Step 2: Get the ConfigMap

kubectl get configmap nginx-config -n nginx-static -o yaml > nginx-config.yaml

Open the file for editing:

nano nginx-config.yaml

Look for the TLS configuration in the data field. You are likely to find something like:

ssl_protocols TLSv1.3;

Modify it to include TLSv1.2 as well:

ssl_protocols TLSv1.2 TLSv1.3;

Save and exit the file.

Now update the ConfigMap:

kubectl apply -f nginx-config.yaml

Step 3: Restart the NGINX pods to pick up the new ConfigMap

Pods will not reload a ConfigMap automatically unless it’s mounted in a way that supports dynamic reload and the app is watching for it (NGINX typically doesn't by default).

The safest way is to restart the pods:

Option 1: Roll the deployment

kubectl rollout restart deployment nginx-static -n nginx-static

Option 2: Delete pods to force recreation

kubectl delete pod -n nginx-static -l app=nginx-static

Step 4: Verify using curl

Use the provided curl command to confirm that TLS 1.2 is accepted:

curl --tls-max 1.2 https://web.k8s.local

A successful response means the TLS configuration is correct.

Final Command Summary

ssh cka000048b

kubectl get configmap nginx-config -n nginx-static -o yaml > nginx-config.yaml

nano nginx-config.yaml # Modify to include "ssl_protocols TLSv1.2 TLSv1.3;"

kubectl apply -f nginx-config.yaml

kubectl rollout restart deployment nginx-static -n nginx-static

# or

kubectl delete pod -n nginx-static -l app=nginx-static

curl --tls-max 1.2 https://web.k8s.local

Solution:

#vi pv.yaml

apiVersion: v1

kind: PersistentVolume

metadata:

name: app-config

spec:

capacity:

storage: 1Gi

accessModes:

- ReadOnlyMany

hostPath:

path: /srv/app-config

#

kubectl create -f pv.yaml

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\9

B.  

kubectl get pods -o=jsonpath="{.items[*]['metadata.name',

'metadata.namespace']}"