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| Section | Weight | Objectives |
|---|---|---|
| Storage | 10% | - Understand persistent volume claims primitive - Understand how to configure applications with persistent storage - Understand Storage Classes and Persistent Volumes - Understand volume mode, access modes and reclaim policies |
| Cluster Architecture, Installation & Configuration | 25% | - Create and manage Kubernetes clusters using kubeadm - Understand CRDs, install and configure operators - Implement and configure a highly-available control plane - Manage the lifecycle of Kubernetes clusters - Use Helm and Kustomize to install cluster components - Prepare underlying infrastructure for installing a Kubernetes cluster - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage role based access control (RBAC) |
| Workloads & Scheduling | 15% | - Use label selectors to schedule Pods - Understand Static Pods - Use ConfigMaps and Secrets to configure applications - Understand resource limits and requests - Understand how to run multiple schedulers and configure scheduler policies - Understand how scheduler works - Understand Deployments and rolling update/rollback - Understand DaemonSets |
| Troubleshooting | 30% | - Understand how to monitor applications - Troubleshoot cluster component failure - Troubleshoot networking - Manage container stdout & stderr logs - Troubleshoot application failure - Evaluate cluster and node logging |
| Services & Networking | 20% | - Understand connectivity between Pods - Know how to use Ingress controllers and Ingress resources - Use the Gateway API to manage Ingress traffic - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Define and enforce Network Policies - Understand and use CoreDNS |
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NEW QUESTION # 26
You have a Kubernetes cluster with a deployment named 'nginx-deployment' in the 'default' namespace. This deployment uses a container image 'nginx:latest'.
You want to define an admission webhook that enforces a policy to prevent deployments from using 'nginx:latest' and instead forces the use of a specific versioned image like 'nginx:l .20.1'. Create the webhook configuration and admission controller code that implements this policy.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create a Webhook Configuration:
2. Create a Service for the Admission Webhook:
3. Create the Admission Controller Code: Example in Go:
4. Build and Deploy the Admission Controller: Build the Go code. Deploy the admission controller as a container in the Kubernetes cluster. Create the Service for the webhook. Create the WebhookConfiguration with the correct CA bundle for the admission controller. The webhook configuration defines the rules for the admission controller, including the resources, operations, and failure policy. The admission controller code handles the validation of the deployment object. It checks the image name and rejects deployments that use the 'nginx:latest' image. The Service exposes the admission controller to the Kubernetes API. The CA bundle is used to secure communication between the webhook and the Kubernetes API. Note: Replace with the actual CA bundle data. The admission controller code should be deployed and configured according to your specific environment and needs.,
NEW QUESTION # 27
Check to see how many worker nodes are ready (not including nodes tainted NoSchedule) and write the number to /opt/KUCC00104/kucc00104.txt.
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\15 B.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\15 C.JPG
NEW QUESTION # 28
Score: 13%
Task
A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a Ready state, ensuring that any changes are made permanent.
Answer:
Explanation:
Solution:
sudo -i
systemctl status kubelet
systemctl start kubelet
systemctl enable kubelet
NEW QUESTION # 29
Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to /opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.
Answer:
Explanation:
Solution:
NEW QUESTION # 30
Task Weight: 4%
Task
Scale the deployment webserver to 3 pods.
Answer:
Explanation:
Solution:
NEW QUESTION # 31
......
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