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| Section | Weight | Objectives |
|---|---|---|
| Services and Networking | 20% | - Use Ingress rules to expose applications - Demonstrate basic understanding of NetworkPolicies - Provide and troubleshoot access to applications via services |
| Application Observability and Maintenance | 15% | - Debugging in Kubernetes - Use built-in CLI tools to monitor Kubernetes applications - Utilize container logs - Implement probes and health checks - Understand API deprecation policies |
| Application Environment, Configuration and Security | 25% | - ServiceAccounts - Discover and use resources that extend Kubernetes (CRD, Operators) - Understand authentication, authorization and admission control - Understanding and defining resource requirements, limits and quotas - ConfigMaps and Secrets - SecurityContexts |
| Application Deployment | 20% | - Use Kubernetes primitives to implement common deployment strategies (e.g., blue/green or canary) - Use the Helm package manager to deploy existing packages - Kustomize - Understand Deployments and how to perform rolling updates |
| Application Design and Build | 20% | - Utilize persistent and ephemeral volumes - Choose and use the right workload resource (Deployment, DaemonSet, CronJob, etc.) - Understand multi-container Pod design patterns (e.g., sidecar, init and others) - Define, build and modify container images |
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NEW QUESTION # 95 
Task:
1) Fix any API depreciation issues in the manifest file -/credible-mite/www.yaml so that this application can be deployed on cluster K8s.
2) Deploy the application specified in the updated manifest file -/credible-mite/www.yaml in namespace cobra See the solution below.
Answer:
Explanation:
Explanation
Solution:
Text Description automatically generated
Text Description automatically generated
NEW QUESTION # 96
Refer to Exhibit.
Context
It is always useful to look at the resources your applications are consuming in a cluster.
Task
* From the pods running in namespace cpu-stress , write the name only of the pod that is consuming the most CPU to file /opt/KDOBG030l/pod.txt, which has already been created.
Answer:
Explanation:
Solution:
NEW QUESTION # 97
You are building a web application with two microservices: a frontend service ('frontend') and a backend service ( ' backend'). The frontend service requires access to the backend service, which iS exposed on port 8080 within the Kubernetes cluster. How would you configure an Ingress resource to direct traffic to the correct service based on the hostname, ensuring that the frontend service can access the backend service internally without exposing the backend service to the public internet?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Service tor the Backend Service:
- Define a Service for the 'backend' service, exposing it internally within the Kubernetes cluster on port 8080.
2. Configure the Ingress Resource: - Create an Ingress resource that directs traffic to the frontend service based on the hostname, allowing the frontend service to access the backend service internally without exposing it to the public internet - Define the Ingress rule to map the hostname 'frontend-example.com' to the 'frontend' service on port 80. - Configure an Ingress rule to enable access to the 'backend' service on port 8080 using the hostname 'internal-backend-example-com' within the Kubernetes cluster.
3. Create a Secret for the Frontend TLS Certificate: - Create a Secret in Kubernetes to store the TLS certificate and key for the frontend service.
4. Apply the Resources: - Apply the Service, Ingress, and Secret YAML files to your Kubernetes cluster using 'kubectl apply -f 5. Access the Frontend Service: - Access the frontend service using the hostname 'frontend-example.com'. The frontend service can now access the backend service internally using the hostname 'internal-backend-example-com' without exposing the backend service to the public internet.]
NEW QUESTION # 98
You have a Deployment running a web application built With a Node.js container. The application currently uses an older version of the Node.js runtime, and you need to upgrade to a newer versiom Describe the steps involved in modifying the container image to include the new Node.js runtime without rebuilding the entire application.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Dockerfile:
- Create a new 'Dockerfile' With the following content
- Replace With the name of the existing Docker image used by your Deployment. - This Dockefflle uses a multi-stage build approach. It starts with a new Node.js base image and copies the application code from the existing image. This allows you to update the runtime without rebuilding the entire application. 2. Build the New Image: - Build tne image using the Dockerflle: docker build -t updated-image:latest 3. Update the Deployment - Modify your Deployment YAML file to use the newly built image:
4. Apply the Changes: - Apply the updated Deployment using 'kubectl apply -f deployment.yamr. This will trigger a rolling update to the pods using the new image. 5. Verify the Update: - Check the logs of the pods using 'kubectl logs -f ' . You should see the application running with the updated Node.js version. 6. Test the Application: - Access your application and ensure it functions correctly with the new Node.js runtime.
NEW QUESTION # 99
Refer to Exhibit.
Set Configuration Context:
[student@node-1] $ | kubectl
Config use-context k8s
Context
A web application requires a specific version of redis to be used as a cache.
Task
Create a pod with the following characteristics, and leave it running when complete:
* The pod must run in the web namespace.
The namespace has already been created
* The name of the pod should be cache
* Use the Ifccncf/redis image with the 3.2 tag
* Expose port 6379
Answer:
Explanation:
Solution:
NEW QUESTION # 100
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