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The CKA certification exam is a performance-based exam that tests the candidate's ability to perform real-world tasks on a live Kubernetes cluster. CKA exam is conducted online and consists of a set of performance-based tasks that the candidate needs to complete within a specified time frame. CKA exam is designed to evaluate the candidate's ability to deploy, configure, and manage Kubernetes clusters, troubleshoot common issues, and automate tasks using Kubernetes APIs and tools.
Linux Foundation CKA (Certified Kubernetes Administrator) Program Exam is a certification exam designed to test the skills and knowledge of professionals working with Kubernetes. CKA Exam is designed to assess a candidate's ability to deploy, configure, and manage Kubernetes clusters. Certified Kubernetes Administrator (CKA) Program Exam certification is globally recognized and is considered a valuable credential for IT professionals.
Linux Foundation CKA (Certified Kubernetes Administrator) program is an advanced certification program that focuses on the container orchestration technology, Kubernetes. The CKA exam is designed to test the skills and knowledge of administrators in Kubernetes and certify them as experts in the field. The program is highly respected in the industry and is recognized as a standard for Kubernetes certification.
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NEW QUESTION # 18
Create a pod that echo "hello world" and then exists. Have the pod deleted automatically when it's completed
Answer:
Explanation:
kubectl run busybox --image=busybox -it --rm --restart=Never --
/bin/sh -c 'echo hello world'
kubectl get po # You shouldn't see pod with the name "busybox"
NEW QUESTION # 19
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
Answer:
Explanation:
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
NEW QUESTION # 20
Create PersistentVolume named task-pv-volume with storage 10Gi, access modes ReadWriteMany, storageClassName manual, and volume at /mnt/data and Create a PersistentVolumeClaim of at least 3Gi storage and access mode ReadWriteOnce and verify
Answer: A
NEW QUESTION # 21
Delete the above pod and create again from the same yaml file
and verifies there is no "test-file.txt" in the path /data/redis
(Since non-persistent storage "emptyDir" is used).
Answer:
Explanation:
kubectl delete pod test-redis kubectl create -f test-redis.yaml kubectl exec -it test-redis /bin/sh cat /data/redis/file.txt // file doesn't exist
NEW QUESTION # 22
You need to deploy a microservice application that uses a custom DNS service for internal communication between microservices. This DNS service is not a standard Kubernetes DNS service. How would you configure Kubernetes to use your custom DNS service for the internal communication of your application?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a ConfigMap for DNS Configuration:
- Create a ConfigMap to store the DNS configuration details for your custom DNS service.
- Example:
- Replace '10.0.0.1 ,10.0.0.2 with the IP addresses of your custom DNS servers and 'my-app.svc.cluster.local' with the search domain for your application. 2. Create a DaemonSet for DNS Configuration: - Create a DaemonSet that will inject the custom DNS configuration into all pods in your cluster. - Example:
- This DaemonSet will use a 'busybox' container to write the DNS configuration from the 'custom-dns-config' ConfigMap to the '/etc/resolv.conf file in every pod. 3. Deploy your Application: - Deploy your microservice application with the appropriate labels to ensure that the DaemonSet injects the custom DNS configuration into your application's pods. 4. Verify DNS Resolution: - Verify that your application's pods can resolve internal DNS names using your custom DNS service. - Example: - You can use the 'nslookup command within a pod to test DNS resolution. 5. Configure Security: - Implement appropriate security measures to protect your custom DNS service and prevent unauthorized access to your application's internal services. - Example: - Consider using a firewall to restrict access to the custom DNS servers. - Configure access control lists to limit access to the DNS service.
NEW QUESTION # 23
......
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