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The CKAD certification is highly valued in the industry and is recognized as a standard for Kubernetes application development skills. Linux Foundation Certified Kubernetes Application Developer Exam certification demonstrates that a developer has the skills and knowledge required to develop and deploy applications on Kubernetes clusters, and it can help developers stand out in a competitive job market. Linux Foundation Certified Kubernetes Application Developer Exam certification is also a valuable asset for organizations that are looking to hire Kubernetes developers, as it provides a measure of assurance that a candidate has the required skills and knowledge.
The CKAD exam is designed to test the practical skills of developers in creating and deploying cloud-native applications on Kubernetes platforms. CKAD Exam assesses the ability of developers to design, build, and troubleshoot Kubernetes applications, including skills in container orchestration, Kubernetes API primitives, and core concepts in Kubernetes architecture. Linux Foundation Certified Kubernetes Application Developer Exam certification is aimed at developers who are looking to enhance their skills in Kubernetes application development and demonstrate their proficiency to potential employers. The CKAD certification is also an essential prerequisite for developers looking to pursue advanced certifications in Kubernetes, such as the Certified Kubernetes Administrator (CKA) certification.
Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q45-Q50):
NEW QUESTION # 45
Context
A project that you are working on has a requirement for persistent data to be available.
Task
To facilitate this, perform the following tasks:
* Create a file on node sk8s-node-0 at /opt/KDSP00101/data/index.html with the content Acct=Finance
* Create a PersistentVolume named task-pv-volume using hostPath and allocate 1Gi to it, specifying that the volume is at /opt/KDSP00101/data on the cluster's node. The configuration should specify the access mode of ReadWriteOnce . It should define the StorageClass name exam for the PersistentVolume , which will be used to bind PersistentVolumeClaim requests to this PersistenetVolume.
* Create a PefsissentVolumeClaim named task-pv-claim that requests a volume of at least 100Mi and specifies an access mode of ReadWriteOnce
* Create a pod that uses the PersistentVolmeClaim as a volume with a label app: my-storage-app mounting the resulting volume to a mountPath /usr/share/nginx/html inside the pod
Answer:
Explanation:
See the solution below.
Explanation
Solution:
NEW QUESTION # 46
You are running a critical application in your Kubernetes cluster, and it requires access to sensitive information stored in a secret To ensure the application only accesses the specific data it needs and avoids potential misuse, you need to configure ServiceAccounts With proper permissions to access the secret. Describe the steps involved in creating a ServiceAccount with the least privilege principle to access the secret Additionally, mention the YAML configuration required for the ServiceAccount and Role.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Secret:
- Create a secret to store your sensitive data using 'kubectl create secret generic my-secret -from
- This command creates a secret named 'my-secret' with two key-value pairs: 'username' and 'password'
- Replace the values with your actual sensitive data.
2. Create a ServiceAccount
- Create a ServiceAccount using 'kubectl create serviceaccount my-service-account
- This command creates a ServiceAccount named 'my-service-account'
3. Create a Role:
- Create a Role to define the permissions for the ServiceAccount. This role will grant access to the secret.
- Create a Role named 'my-role' using the following YAML:
- Save this configuration in a file named 'my-role.yamr and apply it to your cluster using 'kubectl apply -f my-role-yamp - Replace 'default' With the namespace where your secret is created. 4. Bind the Role to the ServiceAccount: - Bind the created Role to the ServiceAccount using 'kubectl create rolebinding my-role-binding -role-my-role account'. - This command creates a RoleBinding named 'my-role-binding' which binds the 'my-role' to the 'my-service-account' in the 'default' namespace. - Replace 'default' With the namespace where your secret is created. 5. Verify Permissions: - You can verify the ServiceAccount's access to the secret using 'kubectl auth can-i get secrets -as-my-service-account --namespace=default' - This command should return 'yes' if the ServiceAccount has the necessary permissions. 6. Use the ServiceAccount in your Pod: - Use the ServiceAccount within your Pod's specification to grant the application access to the secret. - Add a 'serviceAccountNames field Within your Pod specification pointing to tne created ServiceAccount.
Now your application running in the Pod will have access to the secret 'my-secret using the environment variables defined in the 'envFror-n' section. The ServiceAccount 'my-service-account is configured with the least privilege principle, ensuring that it can only access the necessary data. ,
NEW QUESTION # 47
Context
Task:
1) First update the Deployment cka00017-deployment in the ckad00017 namespace:
To run 2 replicas of the pod
Add the following label on the pod:
Role userUI
2) Next, Create a NodePort Service named cherry in the ckad00017 nmespace exposing the ckad00017-deployment Deployment on TCP port 8888
Answer:
Explanation:
Solution:
NEW QUESTION # 48
You have a Kubernetes application that uses a Deployment named sweb-app' to deploy multiple replicas of a web server pod. This web server application needs to be accessible through a public IP address. You are tasked with implementing a service that allows users to access the application from outside the cluster. However, the service should exposed via a specific port number (8080), regardless ot the port that the web server listens on inside the pods.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the Service YAMI-:
- Define the service type as 'LoadBalancer' to expose it via a public IP
- Set the 'targetPort' to the port that the web server listens on inside the pods (let's assume it's 8080)-
- Set the 'port' to 8080, which will be the port used to access the service from outside the cluster.
2. Apply the Service: - Use 'kubectl apply -f web-app-service.yaml' to create the service- 3. Get the External IP: - Once the service iS created, use 'kubectl get services web-app-services to get the external IP address. This will be assigned by the cloud provider and will be available for users to access the application. 4. Test the Service: - Access the application using the external IP address and port 8080. For example, if the external IP is '123.45.67.89' , you would access the application through 'http://123.45.67.89:8080' ,
NEW QUESTION # 49
You are building a microservice that requires a specific configuration file to be mounted into the container This configuration file should be updated witnout restarting tne microservice container. How can you achieve this using Kubernetes?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. use ConfigMaps:
- Create a 'ConfigMap' to store the configuration file.
- Create a YAML file (e.g., 'config.yamIS) with your configuration content:
2. Mount the ConfigMap: - In your 'Deployment definition, mount the 'configMap' into the container using a volume mount
3. Update the Configuration: - IJpdate the 'ConfigMap' directly using ' kubectl patch configmap my-microservice-config -type-merge -p '{"data": {"config-json"' "updated - The changes will be reflected in the mounted volume inside the container. 4. Access the Configuration: - Your microservice code should read the configuration file from the mounted path (e.g., '/etc/config')- Note: This approach avoids restarting the container when you need to update the configuration. The 'ConfigMaps acts as a persistent volume, and changes to its content are automatically reflected in the mounted volume inside the container
NEW QUESTION # 50
......
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