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| Section | Weight | Objectives |
|---|---|---|
| Application Environment, Configuration and Security | 25% | - Understanding and defining resource requirements, limits and quotas - Understand authentication, authorization and admission control - Discover and use resources that extend Kubernetes (CRD, Operators) - ServiceAccounts - SecurityContexts - ConfigMaps and Secrets |
| Application Observability and Maintenance | 15% | - Understand API deprecation policies - Utilize container logs - Implement probes and health checks - Use built-in CLI tools to monitor Kubernetes applications - Debugging in Kubernetes |
| Application Deployment | 20% | - Use Kubernetes primitives to implement common deployment strategies (e.g., blue/green or canary) - Kustomize - Use the Helm package manager to deploy existing packages - Understand Deployments and how to perform rolling updates |
| Services and Networking | 20% | - Demonstrate basic understanding of NetworkPolicies - Use Ingress rules to expose applications - Provide and troubleshoot access to applications via services |
| Application Design and Build | 20% | - Define, build and modify container images - Understand multi-container Pod design patterns (e.g., sidecar, init and others) - Utilize persistent and ephemeral volumes - Choose and use the right workload resource (Deployment, DaemonSet, CronJob, etc.) |
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NEW QUESTION # 132
Refer to Exhibit.
Task
Create a new deployment for running.nginx with the following parameters;
* Run the deployment in the kdpd00201 namespace. The namespace has already been created
* Name the deployment frontend and configure with 4 replicas
* Configure the pod with a container image of lfccncf/nginx:1.13.7
* Set an environment variable of NGINX__PORT=8080 and also expose that port for the container above
Answer:
Explanation:
Solution:
NEW QUESTION # 133
You are running a multi-tier application in Kubernetes. Your application consists of a frontend service (nginx) and a backend service (app). The frontend service exposes a port to the outside world, while the backend service listens on a different port. The backend service needs to access a database service running on a different node.
You need to create a network policy that allows the nginx service to access the app service, and the app service to access the database service. Ensure tnat no otner traffic is allowed between pods in the cluster.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define Network Policy for Nginx Service:
- Create a NetworkPoliCY named 'nginx-policy' that allows traffic from pods labeled 'app=nginx' to pods labeled Sapp-apps
- Use 'ingress' rules to define incoming traffic to the nginx service-
- Specify the for the nginx service.
- Allow all ports.
2. Define Network Policy for App Service: - Create a NetworkP01iCY named 'app-policy' that allows traffic from pods labeled 'app=app' to pods labeled 'app=database' - Use 'ingress' rules to define incoming traffic to the app service. - Specify the 'podSeIector' for the app service. - Allow traffic on the port that the database service listens on.
3. Create the NetworkPolicy Objects - Apply the NetworkP01iCies using the 'kubectl apply' command: bash kubectl apply -f nginx-policy.yaml kubectl apply -f app-policy.yaml 4. Apply Default Network Policy: - Create a NetworkPoliCY named 'default-policy' that blocks all traffic by default. - This ensures that only traffic allowed by the specific policies is permitted.
5. Apply Default Network Policy: - Apply the NetworkPoliCY using the 'kubectl apply' command: bash kubectl apply -f default-policy_yaml This configuration ensures that: - Nginx Service: Can access the 'app' service on port 80, and no other traffic is allowed in or out. - App Service: Can access the 'database' service on port 5432, and no other traffic is allowed in or out - All Other Pods: All other pods in the cluster are blocked from communicating with each other by the default network policy.,
NEW QUESTION # 134
Refer to Exhibit.
Context
As a Kubernetes application developer you will often find yourself needing to update a running application.
Task
Please complete the following:
* Update the app deployment in the kdpd00202 namespace with a maxSurge of 5% and a maxUnavailable of 2%
* Perform a rolling update of the web1 deployment, changing the Ifccncf/ngmx image version to 1.13
* Roll back the app deployment to the previous version
Answer:
Explanation:
Solution:
NEW QUESTION # 135
Context
Anytime a team needs to run a container on Kubernetes they will need to define a pod within which to run the container.
Task
Please complete the following:
* Create a YAML formatted pod manifest
/opt/KDPD00101/podl.yml to create a pod named app1 that runs a container named app1cont using image Ifccncf/arg-output with these command line arguments: -lines 56 -F
* Create the pod with the kubect1 command using the YAML file created in the previous step
* When the pod is running display summary data about the pod in JSON format using the kubect1 command and redirect the output to a file named /opt/KDPD00101/out1.json
* All of the files you need to work with have been created, empty, for your convenience
Answer:
Explanation:
See the solution below.
Explanation
Solution:
NEW QUESTION # 136
You're building a Kubernetes application that manages user profiles and requires a custom resource for storing profile information. Design a custom resource definition (CRD) and its corresponding controller, ensuring that every time a profile is created or updated, a unique user ID is assigned to the profile.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the Custom Resource Definition (CRD)I
- Define the CRD Spec:
- Apply the CRD: bash kubectl apply -f profile-crd_yaml 2. Create a Controller for the Custom Resource: - Define the Controller Logic:
- Check the 'userld' field in the output You should see the automatically generated unique user ID. This comprehensive solution demonstrates how to implement a custom resource definition and a controller for managing user profiles in Kubernetes. You can adjust the code and logic according to your specific requirements. ,
NEW QUESTION # 137
......
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