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| Section | Weight | Objectives |
|---|---|---|
| Application Environment, Configuration and Security | 25% | - Use custom resources and extensions - Use ServiceAccounts - Understand authentication, authorization and admission control - Configure resource requirements, limits and quotas - Apply application security settings - Create and consume Secrets - Work with ConfigMaps |
| Services and Networking | 20% | - Understand and apply NetworkPolicies - Expose applications via Services - Use Ingress rules - Troubleshoot network access |
| Application Design and Build | 20% | - Choose and use appropriate workload resources - Define, build and modify container images - Utilize persistent and ephemeral volumes - Understand multi-container Pod design patterns |
| Application Deployment | 20% | - Manage Deployments, rolling updates and rollbacks - Work with Kustomize - Use Helm package manager - Implement deployment strategies |
| Application Observability and Maintenance | 15% | - Implement probes and health checks - Debug applications in Kubernetes - Understand API deprecations - Monitor applications using CLI tools - Work with container logs |
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NEW QUESTION # 59 
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 See the solution below.
Answer:
Explanation:
Solution:
NEW QUESTION # 60
You're building a containerized application that needs access to a database running outside of the Kubernetes cluster You need to implement a service account With specific permissions to access tne external database using an API key.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Service Account:
- Create a service account YAML file named 'database-service-account.yamr with the following contents:
2. Create a Secret for the API Key: - Create a secret YAML file named 'database-api-key.yaml with the following contents:
3. Create a Role and Role8inding: - Create a Role YAML file named 'database-role.yaml with the following contents:
4. Create a ROIeBinding YAML: - Create a RoleBinding YAML file named 'database-rolebinding.yamr with the following contents:
5. Apply the YAML Files: - Apply the created YAML files using 'kubectl apply -f database-service-account.yamr , 'kubectl apply -f database-api-key.yamr, ' kubectl apply -f database-role.yamr , and 'kubectl apply -f database-rolebinding.yamr 6. Update your Deployment: - Update your application deployment to use the 'database-service-account and mount the secret containing the API key.
7. Access the External Database: - Your application container should now be able to access the external database using the API key provided in the secret.
NEW QUESTION # 61 
Task:
The pod for the Deployment named nosql in the craytisn namespace fails to start because its container runs out of resources.
Update the nosol Deployment so that the Pod:
1) Request 160M of memory for its Container
2) Limits the memory to half the maximum memory constraint set for the crayfah name space.
Answer:
Explanation:
See the solution below.
Explanation
Solution:
NEW QUESTION # 62
You are deploying a web application that uses a separate database pod. The database pod is managed by a StatefulSet, and the web application pods need to access the database using tne database pod'S nostname. Explain how you can configure the web application pods to access the database pod using the hostname provided by the StatefulSet.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Configure the StatefulSet:
- Define the database pod within a StatefulSet.
- Ensure that the StatefulSet assigns a unique hostname to each pod, making it accessible by name-
- Example:
2. Configure the Deployment: - Denne the web application pod Within a Deployment. - Use the 'hostAliaseS field in the Deployment's 'spec.template.spec.containers' to map the database pod's hostname to its IP address. - Example:
3. Access Database by Hostname: - Within tne web application's code, you can now access the database using the hostname "database-service" without needing to know the database pod's actual IP address. - Kubernetes will automatically resolve the hostname to the correct IP address based on the hostAliases configuration. 4. Deploy and Test: - Deploy the StatefulSet and Deployment. - Test the web application to ensure that it can connect to the database using the provided hostname. 5. Important - The ' hostAliases' approach is typically used for cases where the database pod's hostname is consistent and predictable. - It might not be suitable for scenarios involving dynamic pod scaling or where the database pod's hostname changes frequently. - In those scenarios, consider using a Service and Service discovery mechanism to connect to the database.
NEW QUESTION # 63
You are designing a container image for a Pytnon application tnat uses a specific version of a Pytnon library C requests'). You want to ensure that this specific library version is always used, regardless of the host system's installed version. Explain how you would achieve this within your Docket-file.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install Library in Dockerfile:
- Utilize the 'COPY' instruction in your Dockerfile to copy a requirements file containing the exact library version you need.
- Use the 'RIJN' instruction to install the library from the requirements file.
- Example:
dockeflle
FROM python:3S
COPY requirements.txt
RUN pip install -r requirements-txt
COPY
CMD ["python", "app.py"l
2. Create Requirements File ('requirements.txt'):
- Create a 'requirements-txt' file within your project directory.
- Add the specific version of tne 'requests' library to this file.
- Example:
Requests==2.28.1
3. Build the Docker Image:
- Construct your Docker image using the Dockeflle.
- Run tne following command: 'docker build -t your-image-name .
4. Run the Container:
- Launch the container in Kubemetes.
- Verify that the 'requests' library with the specified version is successfully used within the container.
NEW QUESTION # 64
......
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