Enhance Your Career With Available Preparation Guide for CKA Exam [Q18-Q37] : Top Exam Collection : http://blog.topexamcollection.com

새로운 질문 18
Create the nginx pod with version 1.17.4 and expose it on port 80

새 질문 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

새로운 질문 20
Score: 4%

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

새 질문 21
Score:7%

컨텍스트
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.
작업
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.

새 질문 22
Check the image version in pod without the describe command

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

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

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

새 질문 26
Label a node as app=test and verify

새 질문 27
Undo the deployment with the previous version and verify
everything is Ok

새 질문 28
Scale the deployment webserver to 6 pods.

새 질문 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

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

새 질문 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

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

새 질문 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}’

새 질문 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.

새 질문 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

새 질문 36
Get all the pods with label “env”

새 질문 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