さらに、Fast2test CKAダンプの一部が現在無料で提供されています：https://drive.google.com/open?id=1RvDZG4jdQlvfTKLS3XkRqfreTJhliFv1
CKA試験資料は試験に緊密に関連しています。あなたCKA試験資料を勉強したら、その資料のメリットを見つけることができます。CKA試験資料の問題の答えを覚えると、試験に合格する可能性が大きいです。使い安ク、便利で、全面的で、全部CKA試験資料の特徴です。だから、CKA試験資料は有難い商品です。
| Section | Weight | Objectives |
|---|---|---|
| Storage | 10% | - StatefulSet storage configuration - StorageClasses and dynamic provisioning - Volume types and access modes - Persistent Volumes (PV) and Persistent Volume Claims (PVC) |
| Troubleshooting | 30% | - Pod and application failures - Cluster component health checks - Control plane component failures - Log collection and analysis - Worker node issues and recovery - Network connectivity and DNS resolution problems |
| Services & Networking | 20% | - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Ingress resources and controllers - Network policies - CoreDNS and service discovery - CNI configuration and troubleshooting |
| Workloads & Scheduling | 15% | - Configure applications with ConfigMaps and Secrets - Pod lifecycle, init containers, probes - Pod scheduling: node selector, affinity, taints/tolerations - Resource requests, limits and autoscaling - Deployments, rolling updates and rollbacks |
| Cluster Architecture, Installation & Configuration | 25% | - Manage cluster lifecycle and upgrades - Create and manage clusters with kubeadm - Implement high availability control plane - Prepare infrastructure for cluster installation - Install components via Helm / Kustomize - Work with CRDs and Operators - Understand CNI, CSI, CRI interfaces - Manage RBAC |
あらゆる種類の試験を扱う場合、最も重要なことは、効果的にレビューするための科学的な方法を見つけることです。最も専門的な専門家によって編集された当社のCKA練習資料。現在まで、世界中の何万人ものお客様がCKA試験トレントをサポートしています。 CKA学習教材に不慣れな場合は、参考のために無料のデモをダウンロードしてください。一部の未学習の試験の受験者は、CKA練習教材で必需品をすばやく習得できます。したがって、教材は欠かすことのできない要素教材です。
質問 # 57
Configure the kubelet systemd- managed service, on the node labelled with name=wk8s-node-1, to launch a pod containing a single container of Image httpd named webtool automatically. Any spec files required should be placed in the /etc/kubernetes/manifests directory on the node.
You can ssh to the appropriate node using:
[student@node-1] $ ssh wk8s-node-1
You can assume elevated privileges on the node with the following command:
[student@wk8s-node-1] $ | sudo -i
正解：
解説：
solution
質問 # 58 
Task
Create a new Ingress resource as follows:
. Name: echo
. Namespace : sound-repeater
. Exposing Service echoserver-service on
http://example.org/echo
using Service port 8080
The availability of Service
echoserver-service can be checked
i
using the following command, which should return 200 :
[candidate@cka000024] $ curl -o /de v/null -s -w "%{http_code}\n"
http://example.org/echo
正解：
解説：
Task Summary
Create an Ingress named echo in the sound-repeater namespace that:
* Routes requests to /echo on host example.org
* Forwards traffic to service echoserver-service
* Uses service port 8080
* Verification should return HTTP 200 using curl
# Step-by-Step Answer
1## SSH into the correct node
As shown in the image:
bash
CopyEdit
ssh cka000024
## Skipping this will result in a ZERO score!
2## Verify the namespace and service
Ensure the sound-repeater namespace and echoserver-service exist:
kubectl get svc -n sound-repeater
Look for:
echoserver-service ClusterIP ... 8080/TCP
3## Create the Ingress manifest
Create a YAML file: echo-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: echo
namespace: sound-repeater
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: example.org
http:
paths:
- path: /echo
pathType: Prefix
backend:
service:
name: echoserver-service
port:
number: 8080
4## Apply the Ingress resource
kubectl apply -f echo-ingress.yaml
5## Test with curl as instructed
Use the exact verification command:
curl -o /dev/null -s -w "%{http_code}\n"
http://example.org/echo
# You should see:
200
# Final Answer Summary
ssh cka000024
kubectl get svc -n sound-repeater
# Create the Ingress YAML
cat <<EOF > echo-ingress.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: echo
namespace: sound-repeater
annotations:
nginx.ingress.kubernetes.io/rewrite-target: /$1
spec:
rules:
- host: example.org
http:
paths:
- path: /echo
pathType: Prefix
backend:
service:
name: echoserver-service
port:
number: 8080
EOF
kubectl apply -f echo-ingress.yaml
curl -o /dev/null -s -w "%{http_code}\n"
http://example.org/echo
質問 # 59
Score: 4%
Task
Check to see how many nodes are ready (not including nodes tainted NoSchedule ) and write the number to /opt/KUSC00402/kusc00402.txt.
正解：
解説：
Solution:
kubectl describe nodes | grep ready|wc -l
kubectl describe nodes | grep -i taint | grep -i noschedule |wc -l
echo 3 > /opt/KUSC00402/kusc00402.txt
#
kubectl get node | grep -i ready |wc -l
# taints、noSchedule
kubectl describe nodes | grep -i taints | grep -i noschedule |wc -l
#
echo 2 > /opt/KUSC00402/kusc00402.txt
質問 # 60
Create a Kubernetes secret as follows:
Name: super-secret
password: bob
Create a pod named pod-secrets-via-file, using the redis Image, which mounts a secret named super-secret at /secrets.
Create a second pod named pod-secrets-via-env, using the redis Image, which exports password as CONFIDENTIAL
正解：
解説：
solution
質問 # 61
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 # 62
......
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