ちなみに、Japancert 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=1liZ1eXTRfJlMWQgNbQbvlfZYKLp1RpR1
この急速に変化する世界では、Linux Foundation仕事と才能に対する要件は高く、人々が高給の仕事を見つけたい場合は、健康だけでなく作業能力も含むさまざまなスキルを高める必要があります。しかし、CKA認定を取得すると、あなたの作業能力が証明され、理想的な仕事を見つけることができます。 CKA試験に簡単に合格できる高品質のCKA試験資料を提供します。また、CKA試験の学習と準備にほとんど時間を必要としない多くの時間とエネルギーを節約できます。
| Section | Weight | Objectives |
|---|---|---|
| Troubleshooting | 30% | - Understand how to monitor applications - Evaluate cluster and node logging - Troubleshoot cluster component failure - Troubleshoot application failure - Troubleshoot networking - Manage container stdout & stderr logs |
| Cluster Architecture, Installation & Configuration | 25% | - Manage role based access control (RBAC) - Create and manage Kubernetes clusters using kubeadm - Understand CRDs, install and configure operators - Manage the lifecycle of Kubernetes clusters - Understand extension interfaces (CNI, CSI, CRI, etc.) - Use Helm and Kustomize to install cluster components - Implement and configure a highly-available control plane - Prepare underlying infrastructure for installing a Kubernetes cluster |
| Services & Networking | 20% | - Know how to use Ingress controllers and Ingress resources - Define and enforce Network Policies - Understand connectivity between Pods - Use the Gateway API to manage Ingress traffic - Understand and use CoreDNS - Use ClusterIP, NodePort, LoadBalancer service types and endpoints |
| Workloads & Scheduling | 15% | - Use ConfigMaps and Secrets to configure applications - Understand how to run multiple schedulers and configure scheduler policies - Understand DaemonSets - Understand Deployments and rolling update/rollback - Understand how scheduler works - Understand Static Pods - Understand resource limits and requests - Use label selectors to schedule Pods |
| Storage | 10% | - Understand how to configure applications with persistent storage - Understand Storage Classes and Persistent Volumes - Understand persistent volume claims primitive - Understand volume mode, access modes and reclaim policies |
>> Linux Foundation CKA試験勉強攻略 <<
国際的に認められているLinux FoundationのCKA認定は、特定の分野の知識を十分に活用し、能力を大幅に発揮できることを意味するのは当然です。ワークロードに圧倒され、息を吸うことができない場合、CKA準備トレントを選択してみませんか？私たちは、最も信頼性が高く正確な試験資料をお客様に提供することに特化しており、お客様が満足のいくスコアを達成することで試験に合格できるよう支援しています。 CKA練習教材を使用すると、CKA試験は簡単になります。
質問 # 65
Create a deployment spec file that will:
* Launch 7 replicas of the nginx Image with the labelapp_runtime_stage=dev
* deployment name: kual00201
Save a copy of this spec file to /opt/KUAL00201/spec_deployment.yaml
(or /opt/KUAL00201/spec_deployment.json).
When you are done, clean up (delete) any new Kubernetes API object that you produced during this task.
正解：
解説：
See the solution below.
Explanation
solution
質問 # 66
Get list of all pods in all namespaces and write it to file "/opt/pods-list.yaml"
正解：
解説：
See the solution below.
Explanation
kubectl get po -all-namespaces > /opt/pods-list.yaml
質問 # 67
You need to configure CoreDNS to resolve DNS queries for services in different namespaces within your Kubernetes cluster. You want to ensure that pods in one namespace cannot resolve the names of services in other namespaces unless explicitly allowed.
正解：
解説：
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Configure CoreDNS with Namespace-Specific DNS:
- In the CoreDNS ConfigMap, configure the 'kubernetes' plugin to restrict DNS resolution based on namespaces.
2. Use Network Policies for Cross-Namespace Communication: - If you need pods in one namespace to communicate with services in another namespace, use network policies to explicitly allow the communication.
3. Test Namespace-Specific DNS: - Deploy pods in different namespaces and try to resolve service names from those pods. You should only be able to resolve names of services in the same namespace or namespaces that have been explicitly allowed using network policies.
質問 # 68
A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a state, ensuring that any changes are made permanent.
You can ssh to the failed node using:
[student@node-1] $ | ssh Wk8s-node-0
You can assume elevated privileges on the node with the following command:
[student@w8ks-node-0] $ | sudo -i
正解：
解説：
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\20 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\20 D.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\20 E.JPG
質問 # 69
Score: 7%
Task
First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to
/srv/data/etcd-snapshot.db.
Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db
正解：
解説：
Solution:
#backup
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt --cert=/opt
/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot save /etc/data/etcd-snapshot.db
#restore
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt --cert=/opt
/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot restore /var/lib/backup/etcd- snapshot-previoys.db
質問 # 70
......
JapancertクライアントがCKAクイズ準備を購入する前後に、思いやりのあるオンラインカスタマーサービスを提供します。クライアントは、購入前にCKA試験実践ガイドの価格、バージョン、内容を尋ねることができます。ソフトウェアの使用方法、CKAクイズ準備の機能、CKA学習資料の使用中に発生する問題、および払い戻しの問題について相談できます。オンラインカスタマーサービスの担当者がCKA試験実践ガイドに関する質問に回答し、辛抱強く情熱的に問題を解決します。
CKA受験準備: https://www.japancert.com/CKA.html
ちなみに、Japancert 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=1liZ1eXTRfJlMWQgNbQbvlfZYKLp1RpR1