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

新问题 18
Create the nginx pod with version 1.17.4 and expose it on port 80

新问题 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

新问题 20
得分： 4%

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

新问题 21
Score:7%

背景
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.
任务
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.

新问题 22
Check the image version in pod without the describe command

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

新问题 24
将其中一个 pod 的标签更改为 env=uat，然后列出所有 pod 以进行验证

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

新问题 26
Label a node as app=test and verify

新问题 27
Undo the deployment with the previous version and verify
everything is Ok

新问题 28
Scale the deployment webserver to 6 pods.

新问题 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

新问题 30
创建一个回声为 "hello world "的 pod，然后让它存在。完成后自动删除 pod

新问题 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

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

新问题 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}’

新问题 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.

新问题 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

新问题 36
Get all the pods with label “env”

新问题 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
一种花苞
元数据：
标签
run: nginx
name: nginx
规格：
集装箱
- 图像：nginx
name: nginx
envFrom:
– configMapRef:
name: keyvalcfgmap
重启策略：始终
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
重启策略：始终
kubectl apply -f nginx-pod.yml
// verify
kubectl exec -it nginx — env
kubectl delete po nginx

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