P.S. VCESoft在Google Drive上分享了免費的2026 Linux Foundation CKAD考試題庫：https://drive.google.com/open?id=1yTABxcNgly9kiaRuUdUS1oE0xxKHg382
我們VCESoft網站是在盡最大的努力為廣大考生提供最好最便捷的服務。速度和高效率當然不可避免，在當今的社會裏，高效率走到哪里都是熱議的話題，所以我們網站為廣大考生設計了一個高效率的培訓資料，可以讓考生迅速領悟，從而考試取得優異的成績。VCESoft Linux Foundation的CKAD考試培訓資料可以幫助考生節省大量的時間和精力，考生也可以用多餘的時間和盡力來賺去更多的金錢。
CKAD認證很重要，因為它是一種具有行業認可的證書，證明了個人在Kubernetes應用程序開發方面的專業知識。 Kubernetes廣泛用於行業，是最受歡迎的集裝箱編排系統。因此，CKAD認證為就業市場中的個人提供了競爭優勢，並增加了被錄用的機會。
獲得CKAD認證對於希望在Kubernetes應用程序開發領域推進職業生涯的專業人士來說是一個重要的里程碑。該認證證明了候選人在Kubernetes上設計、部署和管理應用程序的熟練程度，並得到了科技行業領先企業的認可。CKAD認證為專業人士提供了展示其技能和專業知識、增強其可信度和增加其收入潛力的機會。
獲得CKAD認證已經成為大多數IT員工獲得更好工作的一種選擇，然而，許多考生一直在努力嘗試卻失敗了。如果你選擇使用我們的Linux Foundation CKAD題庫產品，幫您最大程度保證取得成功。充分利用CKAD題庫你將得到不一樣的效果，這是一個針對性強，覆蓋面廣，更新快，最完整的學習資料，保證您一次通過CKAD考試。如果您想要真實的考試模擬，就選擇我們軟件版本的Linux Foundation CKAD題庫，安裝在電腦上進行模擬，簡單易操作。
Linux Foundation 認證的 Kubernetes 應用開發人員 (CKAD) 考試是一個證書計劃，旨在驗證正在使用 Kubernetes 的開發人員的技能和知識。Kubernetes 是一個開源的容器編排平台，已成為管理和部署容器化應用程序的行業標準。此證書計劃測試候選人在 Kubernetes 上設計、構建、配置和公開雲原生應用程序的能力。
問題 #97
You have a Deployment named 'wordpress-deployment' that runs 3 replicas of a WordPress container. You need to implement a persistent volume claim (PVC) for each pod that stores the website data, and you want to ensure that the data persists even if the pod is deleted or restarted. The PVC should be created using a storage class named 'standard' with a capacity of 10Gi.
答案：
解題說明：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Create a Storage Class:
- Create a 'standard' storage class:
- Apply the YAML file: bash kubectl apply -f standard-storage-class-yaml 2. Create a Persistent Volume Claim: - Create a PVC named 'wordpress-pvc' with a request for IOGi storage and using the 'standard' storage class:
- Apply the YAML file: bash kubectl apply -f wordpress-pvc.yaml 3. Update the Deployment - Update the Swordpress-deployment' YAML file to mount the PVC to each pod:
- Apply the updated YAML file: bash kubectl apply -f wordpress-deployment_yaml 4. Verify the Deployment - Check the status of the deployment using 'kubectl get deployments wordpress-deployment' to confirm the rollout and updated replica count. - Use 'kubectl describe pods -l app=wordpress' to confirm that each pod is using the 'wordpress-pvc' and the website data is stored in the persistent volume. - You can now access the WordPress website through the service that is associated with the Deployment. 5. Test Data Persistence: - Delete or restan one of the pods in the deployment. - Observe that the website data remains intact because the PVC is persistent and the data is stored in the underlying volume.,
問題 #98
You have a Kubernetes cluster with a Deployment named 'my-app' running a simple web application. The 'my-app' Deployment is configured to use a ServiceAccount named 'my-app-sa' _ You want to ensure that only authorized users with specific permissions can access the 'my-app' pod's logs. How would you implement this using Role-Based Access Control (RBAC)?
答案：
解題說明：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Create a Role:
- Define a new Role named 'my-app-log-reader' that grants access to read logs of the 'my-app' pod.
- This role will be bound to the ServiceAccount used by the 'my-app' Deployment.
2. Create a RoleBinding: - Create a RoleBinding named 'my-app-log-reader-binding' to link the 'my-app-log-reader' Role to the 'my-app-sa' ServiceAccount. - This binding allows the 'my-app-sa' to use the permissions defined in the 'my-app-log-reader' role.
3. Apply the Configurations: - Apply the Role and RoleBinding YAML files to your Kubernetes cluster using 'kubectl apply -f role.yamr and 'kubectl apply -f rolebinding_yamr 4. verify the RBAC: - Once applied, you can verify the RBAC configuration by using 'kubectl auth can-i get pods --as=my-app-sa --namespace=' - This command should show 'yes' indicating that the ServiceAccount can access pods. - You can also check for access to logs with a similar command: 'kubectl auth can-i get pods/my-app-pod-name --namespace=' - Replace "my-app-pod-name' with the actual pod name of the application. 5. Test Access: - Try accessing the logs using "kubectl logs my-app-pod-name -n ' while impersonating the ServiceAccount 'my-app-sa' - You should be able to view the logs successfully. If any user tries to access the logs without the necessary permissions, they will be denied. Important Note: This is a basic example and can be further Kustomize d depending on your specific security needs. You can adjust the 'rules' in the Role definition to control specific permissions for users or ServiceAccounts. For example, you might restrict access to certain namespaces or resources. ]
問題 #99
You have a Deployment named 'database-deployment' that runs a PostgreSQL database container. You want to enforce the following security restrictions:
- The container should only be allowed to run with the I-IID 1000.
- The container should be able to access a specific hostPath volume mounted at '/db-data' for storing database data.
- The container should not be allowed to escalate privileges.
- The container should only have the 'NET BIND SERVICE capability, allowing it to listen on specific ports.
You need to define a SecurityContext in the Deployment configuration to enforce these restrictions.
答案：
解題說明：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the SecurityContext
- Create a 'securitycontext' section within the 'spec-template-spec-containers' block for your 'database-deployment container-
- Set 'runAsIJsers to '1000' to enforce running as UID 1000.
- Set 'allowPrivilegeEscalation' to 'false' to disable privilege escalation-
- In the 'capabilities' sectiom
- Set 'drop' to an array containing all capabilities except 'NET BIND_SERVICE'
- Set 'add' to an array containing 'NET BIND SERVICE
- Define a 'volumeMount' to mount the '/db-data' hostPath volume.
Solution (Step by Step) :
1. Define the SecurityContext:
- Create a 'securityContext' section within the block for your 'database-deployment container.
- Set 'runAslJser' to "1000' to enforce running as UID 1000.
- Set 'allowPriviIegeEscaIation' to 'false' to disable privilege escalation.
- In the 'capabilities' section:
- Set 'drop' to an array containing all capabilities except 'NET BIND SERVICE
- Set 'add' to an array containing
- Define a 'volumeMount' to mount the '/db-data' hostPath volume.
2. Create the Deployment: - Apply the Deployment YAML file using 'kubectl apply -f database-deployment.yaml. - The 'securityContext' restricts the container's benavior and capabilities. - Setting 'runAslJser' to '1000' forces the container to run as the specified UID. - 'allowPrivilegeEscalation' set to 'false' prevents tne container from gaining higner privileges. - The 'capabilities' section controls specific capabilities. 'drop' removes unwanted capabilities, while 'add' grants specific capabilities. In this case, the container is allowed to use the capability, enabling it to bind to specific ports. - The 'volumeMount defines the mount point for the hostPath volume, providing access to the specified directory tor database data. This configuration ensures that the 'database-deployment container runs with the specific IJID, cannot escalate privileges, and only has the 'NET BIND SERVICE' capability, while accessing the hostPath volume for database data. This provides a secure environment for your database container.,
問題 #100
Context
An existing web application must be exposed externally.
You must connect to the correct host . Failure to do so may result in a zero score.
[candidate@base] $ ssh ckad00025
An application externally using the URL external.sterling-bengal.local . Any requests starting with / must be routed to the application web-app.
To test the web application's external reachability, run
[candidate@ckad00025]
$ curl http://external.sterling-bengal.local/
or open this URL in the remote desktop's browser.
答案：
解題說明：
See the Explanation below for complete solution.
Explanation:
ssh ckad00025
You need to expose the existing app "web-app" externally at:
* Host: external.sterling-bengal.local
* Path: / (and anything starting with /) # route to web-app
In CKAD labs, this is almost always done with an Ingress pointing to the Service web-app.
1) Find where web-app Service lives (namespace + port)
kubectl get svc -A | grep -w web-app
You'll get something like:
<NAMESPACE> web-app ClusterIP ... <PORT>/TCP
Set the namespace:
NS=<NAMESPACE>
Check the service port(s):
kubectl -n $NS get svc web-app -o yaml
Note the service port number (commonly 80).
Also verify it has endpoints (so it actually routes to pods):
kubectl -n $NS get endpoints web-app -o wide
If endpoints are empty, the Service selector doesn't match pods - tell me and I'll give the exact fix. But usually it's fine.
2) Create the Ingress to route / to web-app
Create a manifest (use the service port you saw; I'll assume 80 below):
cat <<'EOF' > web-app-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: web-app-ingress
spec:
rules:
- host: external.sterling-bengal.local
http:
paths:
- path: /
pathType: Prefix
backend:
service:
name: web-app
port:
number: 80
EOF
Apply it:
kubectl -n $NS apply -f web-app-ingress.yaml
Verify:
kubectl -n $NS get ingress web-app-ingress
kubectl -n $NS describe ingress web-app-ingress
If your Service port is not 80, change number: 80 to the correct value and re-apply.
3) Test external reachability (as instructed)
Run exactly:
curl
-i http://external.sterling-bengal.local/
If curl still fails (quick checks)
A) Is there an ingress controller running?
kubectl get pods -A | egrep -i 'ingress|nginx'
kubectl get svc -A | egrep -i 'ingress|nginx'
B) Does Ingress show an address?
kubectl -n $NS get ingress web-app-ingress -o wide
C) Do we have endpoints?
kubectl -n $NS get endpoints web-app -o wide
問題 #101
You are running a web application with multiple services exposed via Kubernetes Ingress. The application has two distinct environments: 'staging' and 'production' , each with its own set of services and domain names. You need to configure Ingress rules to route traffic to the appropriate services based on the requested hostname and environment. For example, requests to 'staging.example.com' should be directed to the staging environment, while requests to 'example.com' should go to the production environment. Implement this configuration using Ingress rules.
答案：
解題說明：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Service for Each Environment:
- Define services for both 'staging' and 'production' environments, ensuring that the services for each environment are named appropriately. For example, 'staging-service' and .
2. Create an Ingress Resource: - Define an Ingress resource that maps the hostnames to the corresponding services.
3. Apply the Configuration: - Apply the service and ingress definitions using 'kubectl apply -f services.yaml' and 'kubectl apply -f ingress.yaml' respectively. 4. Test the Configuration: - Access 'staging.example.com' and 'example.com' in your browser to ensure that the traffic is directed to the correct services and environments. ,
問題 #102
......
CKAD參考資料: https://www.vcesoft.com/CKAD-pdf.html
P.S. VCESoft在Google Drive上分享了免費的、最新的CKAD考試題庫：https://drive.google.com/open?id=1yTABxcNgly9kiaRuUdUS1oE0xxKHg382