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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshooting | 30% | - Control plane component failures - Pod and application failures - Network connectivity and DNS resolution problems - Worker node issues and recovery - Cluster component health checks - Log collection and analysis |
| Topic 2: Services & Networking | 20% | - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Network policies - Ingress resources and controllers - CNI configuration and troubleshooting - CoreDNS and service discovery |
| Topic 3: Storage | 10% | - StorageClasses and dynamic provisioning - StatefulSet storage configuration - Volume types and access modes - Persistent Volumes (PV) and Persistent Volume Claims (PVC) |
| Topic 4: Cluster Architecture, Installation & Configuration | 25% | - Work with CRDs and Operators - Manage cluster lifecycle and upgrades - Manage RBAC - Understand CNI, CSI, CRI interfaces - Install components via Helm / Kustomize - Prepare infrastructure for cluster installation - Create and manage clusters with kubeadm - Implement high availability control plane |
| Topic 5: Workloads & Scheduling | 15% | - Pod lifecycle, init containers, probes - Configure applications with ConfigMaps and Secrets - Deployments, rolling updates and rollbacks - Resource requests, limits and autoscaling - Pod scheduling: node selector, affinity, taints/tolerations |
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NEW QUESTION # 18
Create an nginx pod and list the pod with different levels of verbosity
Answer:
Explanation:
// create a pod
kubectl run nginx --image=nginx --restart=Never --port=80
// List the pod with different verbosity
kubectl get po nginx --v=7
kubectl get po nginx --v=8
kubectl get po nginx --v=9
NEW QUESTION # 19
Create and configure the service front-end-service so it's accessible through NodePort and routes to the existing pod named front-end.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 20
Create a busybox pod that runs the command "env" and save the output to "envpod" file See the solution below.
Answer:
Explanation:
kubectl run busybox --image=busybox --restart=Never --rm -it -- env > envpod.yaml
NEW QUESTION # 21
You are running an application in Kubernetes using a Deployment that defines 3 replicas. You need to perform a rolling update to the Deployment to upgrade the application to a new version. During the update process, you want to ensure that at least 2 replicas are always available, and the maximum number of new pods that can be created at the same time is also limited to 1. How can you configure the Deployment to achieve this rolling update strategy?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Update Deployment YAML:
- Update the 'spec.replicas' field to the desired number of replicas for the new version.
- In the 'spec.strategy.rollingUpdate' section, set the 'maxUnavailable' to 1, meaning that only one pod can be unavailable during the update process.
- Set the maxSurge' to 1, limiting the number of new pods that can be created simultaneously to 1.
2. Apply the Updated Deployment: - Use 'kubectl apply -f deployment.yaml' to apply the changes to your cluster. 3. Monitor the Update Process: - Use 'kubectl get pods -l app=my-app' to monitor the pods. You will see a rolling update in progress: - One old pod will be terminated at a time. - One new pod will be created at a time. - The update will continue until all replicas are updated to the new version. 4. Verify the Update: - Once the update is complete, use 'kubectl describe deployment my-deployment' to check the deployment status. The 'updatedReplicas' field should match the 'replicas' field, indicating that the update was successful. By using 'maxUnavailable' and 'maxSurge' you control the number of unavailable and surge pods during the update process. This ensures a safe and controlled rolling update strategy.,
NEW QUESTION # 22
Monitor the logs of pod foo and:
Extract log lines corresponding to error
unable-to-access-website
Write them to /opt/KULM00201/foo
Answer:
Explanation:
solution
NEW QUESTION # 23
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