Enhance Your Career With Available Preparation Guide for CKA Exam [Q18-Q37]

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NEW QUESTION 18
Create the nginx pod with version 1.17.4 and expose it on port 80

kubectl run nginx –image=nginx:1.17.4 –restart=Never — port=80

NEW QUESTION 19
List all the events sorted by timestamp and put them into file.log and verify

kubectl get events –sort-by=.metadata.creationTimestamp
kubectl get events –sort-by=.metadata.creationTimestamp >
test-file.log
cat test-file.log

kubectl get events –sort-by=.metadata.creationTimestamp
// putting them into file.log
kubectl get events –sort-by=.metadata.creationTimestamp >
cat test-file.log

kubectl get events –sort-by=.metadata.creationTimestamp
// putting them into file.log
kubectl get events –sort-by=.metadata.creationTimestamp >
test-file.log
cat test-file.log

NEW QUESTION 20
Score: 4%

Task
Schedule a pod as follows:
* Name: nginx-kusc00401
* Image: nginx
* Node selector: disk=ssd

Solution:
#yaml
apiVersion: v1
kind: Pod
metadata:
name: nginx-kusc00401
spec:
containers:
– name: nginx
image: nginx
imagePullPolicy: IfNotPresent
nodeSelector:
disk: spinning
#
kubectl create -f node-select.yaml

NEW QUESTION 21
Score:7%

Context
An existing Pod needs to be integrated into the Kubernetes built-in logging architecture (e. g. kubectl logs). Adding a streaming sidecar container is a good and common way to accomplish this requirement.
Task
Add a sidecar container named sidecar, using the busybox Image, to the existing Pod big-corp-app. The new sidecar container has to run the following command:
/bin/sh -c tail -n+1 -f /va r/log/big-corp-app.log
Use a Volume, mounted at /var/log, to make the log file big-corp-app.log available to the sidecar container.

Solution:
#
kubectl get pod big-corp-app -o yaml
#
apiVersion: v1
kind: Pod
metadata:
name: big-corp-app
spec:
containers:
– name: big-corp-app
image: busybox
args:
– /bin/sh
– -c
– >
i=0;
while true;
do
echo “$(date) INFO $i” >> /var/log/big-corp-app.log;
i=$((i+1));
sleep 1;
done
volumeMounts:
– name: logs
mountPath: /var/log
– name: count-log-1
image: busybox
args: [/bin/sh, -c, ‘tail -n+1 -f /var/log/big-corp-app.log’]
volumeMounts:
– name: logs
mountPath: /var/log
volumes:
– name: logs
emptyDir: {
}
#
kubectl logs big-corp-app -c count-log-1

NEW QUESTION 22
Check the image version in pod without the describe command

See the solution below.
Explanation
kubectl get po nginx -o
jsonpath='{.spec.containers[].image}{“\n”}’

NEW QUESTION 23
Create and configure the service front-end-service so it’s accessible through NodePort and routes to the existing pod named front-end.

See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\8 B.JPG

NEW QUESTION 24
Change the label for one of the pod to env=uat and list all the pods to verify

kubectl label pod/nginx-dev3 env=uat –overwrite kubectl get pods –show-labels

NEW QUESTION 25
List pod logs named “frontend” and search for the pattern “started” and write it to a file “/opt/error-logs”

Kubectl logs frontend | grep -i “started” > /opt/error-logs

NEW QUESTION 26
Label a node as app=test and verify

kubectl label node node-name app=test // Verify kubectl get no -show-labels kubectl get no -l app=test

NEW QUESTION 27
Undo the deployment with the previous version and verify
everything is Ok

kubectl rollout undo deploy webapp kubectl rollout status deploy webapp kubectl get pods

NEW QUESTION 28
Scale the deployment webserver to 6 pods.

solution

NEW QUESTION 29
Create a configmap called myconfigmap with literal value
appname=myapp

kubectl create cm myconfigmap –from-literal=appname=myapp
// Verify
kubectl get cm -o yaml
(or)
kubectl describe cm

kubectl create cm myconfigmap –from-literal=appname=myapp
// Verify
(or)
kubectl describe cm

NEW QUESTION 30
Create a pod that echo “hello world” and then exists. Have the pod deleted automatically when it’s completed

kubectl run busybox –image=busybox -it –rm –restart=Never —
/bin/sh -c ‘echo hello world’
kubectl get po # You shouldn’t see pod with the name “busybox”

NEW QUESTION 31
Get the list of pods of webapp deployment

// Get the label of the deployment
kubectl get deploy –show-labels
kubectl get pods -l app=webapp

// Get the label of the deployment
kubectl get deploy –show-labels
// Get the pods with that label
kubectl get pods -l app=webapp

NEW QUESTION 32
Schedule a pod as follows:
Name: nginx-kusc00101
Image: nginx
Node selector: disk=ssd

See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\6 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\6 C.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\6 D.JPG

NEW QUESTION 33
Add a taint to node “worker-2” with effect as “NoSchedule” and
list the node with taint effect as “NoSchedule”

// Add taint to node “worker-2”
kubectl taint nodes worker-2 key=value:NoSchedule
.items[*]}{.metadata.name} {.spec.taints[?(
@.effect==’NoSchedule’ )].effect}{“n”}{end}” | awk ‘NF==2
{print $0}’

// Add taint to node “worker-2”
kubectl taint nodes worker-2 key=value:NoSchedule
// Verify
// Using “custom-coloumns” , you can customize which coloumn to
be printed
kubectl get nodes -o customcolumns=NAME:.metadata.name,TAINTS:.spec.taints –no-headers
// Using jsonpath
kubectl get nodes -o jsonpath=”{range
.items[*]}{.metadata.name} {.spec.taints[?(
@.effect==’NoSchedule’ )].effect}{“n”}{end}” | awk ‘NF==2
{print $0}’

NEW QUESTION 34
Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to /opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.

Solution:

NEW QUESTION 35
Create a pod with environment variables as var1=value1.Check the environment variable in pod

kubectl run nginx –image=nginx –restart=Never –env=var1=value1
# then
kubectl exec -it nginx — env
# or
kubectl describe po nginx | grep value1

kubectl run nginx –image=nginx –restart=Never –env=var1=value1
# then
kubectl exec -it nginx — env
# or
kubectl exec -it nginx — sh -c ‘echo $var1’
# or
kubectl describe po nginx | grep value1

NEW QUESTION 36
Get all the pods with label “env”

kubectl get pods -L env

NEW QUESTION 37
Create an nginx pod and load environment values from the above configmap “keyvalcfgmap” and exec into the pod and verify the environment variables and delete the pod

// first run this command to save the pod yaml
kubectl run nginx –image=nginx –restart=Always –dry-run -o
yaml > nginx-pod.yml
// edit the yml to below file and create
vim nginx-pod.yml
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
– image: nginx
name: nginx
envFrom:
– configMapRef:
name: keyvalcfgmap
restartPolicy: Always
kubectl apply -f nginx-pod.yml
// verify
kubectl exec -it nginx — env
kubectl delete po nginx

// first run this command to save the pod yaml
kubectl run nginx –image=nginx –restart=Always –dry-run -o
yaml > nginx-pod.yml
// edit the yml to below file and create
vim nginx-pod.yml
apiVersion: v1
name: nginx
envFrom:
– configMapRef:
name: keyvalcfgmap
restartPolicy: Always
kubectl apply -f nginx-pod.yml
// verify
kubectl exec -it nginx — env
kubectl delete po nginx

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The Linux Foundation Certified Kubernetes Administrator (CKA) Program Certification Exam is designed to test the skills and knowledge of individuals in the field of Kubernetes administration. The exam is aimed at individuals who are responsible for designing, deploying, and maintaining Kubernetes clusters in production environments. The CKA Program Certification Exam is a performance-based exam, which means that candidates will be required to perform tasks on a live Kubernetes cluster rather than answering multiple-choice questions.

Updated CKA Dumps Questions Are Available For Passing Linux Foundation Exam: https://www.topexamcollection.com/CKA-vce-collection.html

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