ちなみに、Fast2test CKAの一部をクラウドストレージからダウンロードできます：https://drive.google.com/open?id=1M1XIQ0tgHZA8nIM5OjEF8T7R6gdm1bln
毎日当社のウェブサイト上の多数のバイヤーによって裏付けることができます。賢い人はしばしば最も有利な選択をすることができます、私はあなたが彼らの一人であると信じています。 CKAの実際の試験を購入する前に不安がある場合は、無料の試用版を用意しています。マウスをクリックするだけで、試してみることができます。おそらく、この選択はあなたの人生に何らかの影響を与えるでしょう。
| Section | Weight | Objectives |
|---|---|---|
| Services & Networking | 20% | - Define and enforce Network Policies - Understand connectivity between Pods - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Understand and use CoreDNS - Use the Gateway API to manage Ingress traffic - Know how to use Ingress controllers and Ingress resources |
| Troubleshooting | 30% | - Troubleshoot application failure - Troubleshoot networking - Evaluate cluster and node logging - Manage container stdout & stderr logs - Understand how to monitor applications - Troubleshoot cluster component failure |
| Workloads & Scheduling | 15% | - Understand Deployments and rolling update/rollback - Understand Static Pods - Understand resource limits and requests - Use ConfigMaps and Secrets to configure applications - Use label selectors to schedule Pods - Understand how scheduler works - Understand DaemonSets - Understand how to run multiple schedulers and configure scheduler policies |
| Cluster Architecture, Installation & Configuration | 25% | - Manage the lifecycle of Kubernetes clusters - Prepare underlying infrastructure for installing a Kubernetes cluster - Manage role based access control (RBAC) - Understand extension interfaces (CNI, CSI, CRI, etc.) - Implement and configure a highly-available control plane - Understand CRDs, install and configure operators - Create and manage Kubernetes clusters using kubeadm - Use Helm and Kustomize to install cluster components |
| Storage | 10% | - Understand how to configure applications with persistent storage - Understand persistent volume claims primitive - Understand Storage Classes and Persistent Volumes - Understand volume mode, access modes and reclaim policies |
当社のCKAガイド急流を購入するすべての顧客情報は、外部に対して機密情報です。当社から漏洩したプライバシー情報について心配する必要はありません。あなたの名前、電子メール、電話番号で連絡できる人はすべて社内のメンバーです。お客様から提供されたプライバシー情報は、オンラインサポートサービスでのみ使用でき、専門スタッフによるリモートアシスタンスを提供できます。当社の専門家は、毎日CKA試験問題の更新を確認し、お客様に常に情報を提供しています。 CKAテストガイドについて質問がある場合は、オンラインでメールまたはお問い合わせください。
質問 # 17
Given a partially-functioning Kubernetes cluster, identify symptoms of failure on the cluster.
Determine the node, the failing service, and take actions to bring up the failed service and restore the health of the cluster. Ensure that any changes are made permanently.
You can ssh to the relevant I nodes (bk8s-master-0 or bk8s-node-0) using:
[student@node-1] $ ssh <nodename>
You can assume elevated privileges on any node in the cluster with the following command:
[student@nodename] $ | sudo -i
正解：
解説：
質問 # 18
You have a Deployment named 'wordpress-deployment' running a WordPress application with two pods. The WordPress application needs to access a shared secret key stored in a Secret named 'wordpress- secret'. How do you ensure the secret key is securely mounted and available to both pods?
正解：
解説：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the Secret:
- Create a Secret named 'wordpress-secret' containing the shared secret key. Use 'kubectl create secret generic' with the '-from-literal' flag to create a generic Secret:
kubectl create secret generic wordpress-secret --from-literal=wordpress-secret="your secret_key"
2. Configure the Deployment:
- Modify the 'wordpress-deployment' Deployment to mount the 'wordpress-secref Secret as a volume in the Pod template. Use 'volumeMounts' to specify the mount path and 'volumes' to define the Secret as a volume source:
3. Apply the Changes: - Apply the modified Deployment YAML using 'kubectl apply -f wordpress-deployment.yaml'. 4. Verify the Secret Mount: - Use 'kubectl exec' to access a pod in the 'wordpress-deployment' and verify that the Secret is mounted at the specified path (e.g., 'Ivar/run/secrets/wordpress'). 5. Access the Secret Key: - Within the WordPress application's code, access the secret key from the mounted path.
質問 # 19
You have a Deployment named 'frontend-deployment' with 5 replicas of a frontend container. You need to implement a rolling update strategy that allows for a maximum of 2 pods to be unavailable at any given time. You also want to ensure that the update process is completed within a specified timeout of 8 minutes. If the update fails to complete within the timeout, the deployment should revert to the previous version. Additionally, you want to configure a 'post-start' hook for the frontend container that executes a health check script to verify the application's readiness before it starts accepting traffic.
正解：
解説：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Update the Deployment YAML:
- Update the 'replicas' to 5.
- Define 'maxUnavailable: 2' and 'maxSurge: 0' in the 'strategy.rollingUpdate' section to control the rolling update process.
- Configure a 'strategy.type' to 'RollingUpdate' to trigger a rolling update when the deployment is updated.
- Set Always' to ensure that the new image is pulled even if
it exists in the pod's local cache.
- Add a 'spec.progressDeadlineSeconds: 480' to set a timeout of 8 minutes for the update process.
- Add a 'spec.template.spec.containers[0].lifecycle.postStart' hook to define a script that executes a health check script before the container starts accepting traffic.
2. Create the Deployment: - Apply the updated YAML file using 'kubectl apply -f frontend-deployment.yaml' 3. Verify the Deployment: - Check the status of the deployment using 'kubectl get deployments frontend-deployment' to confirm the rollout and updated replica count. 4. Trigger the Automatic Update: - Push a new image to the 'my.org/frontend:latest' Docker Hub repository. 5. Monitor the Deployment: - Use 'kubectl get pods -l app=frontend' to monitor the pod updates during the rolling update process. 6. Observe Rollback if Timeout Exceeds: - If the update process takes longer than 8 minutes to complete, the deployment will be rolled back to the previous version. This can be observed using 'kubectl describe deployment frontend-deployment' and checking the 'updatedReplicas' and 'availableReplicas' fields.,
質問 # 20
Create an nginx pod and list the pod with different levels of verbosity
正解：B
質問 # 21
Given a partially-functioning Kubernetes cluster, identify symptoms of failure on the cluster.
Determine the node, the failing service, and take actions to bring up the failed service and restore the health of the cluster. Ensure that any changes are made permanently.
You can ssh to the relevant I nodes (
[student@node-1] $ ssh <nodename
You can assume elevated privileges on any node in the cluster with the following command:
[student@nodename] $ | sudo -i
正解：
解説：
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\23 E.JPG
質問 # 22
......
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