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| Section | Weight | Objectives |
|---|---|---|
| Cluster Architecture, Installation & Configuration | 25% | - Create and manage clusters with kubeadm - Manage RBAC - Understand CNI, CSI, CRI interfaces - Work with CRDs and Operators - Implement high availability control plane - Manage cluster lifecycle and upgrades - Prepare infrastructure for cluster installation - Install components via Helm / Kustomize |
| Workloads & Scheduling | 15% | - Pod scheduling: node selector, affinity, taints/tolerations - Configure applications with ConfigMaps and Secrets - Deployments, rolling updates and rollbacks - Resource requests, limits and autoscaling - Pod lifecycle, init containers, probes |
| Services & Networking | 20% | - Network policies - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Ingress resources and controllers - CoreDNS and service discovery - CNI configuration and troubleshooting |
| Troubleshooting | 30% | - Log collection and analysis - Worker node issues and recovery - Control plane component failures - Pod and application failures - Cluster component health checks - Network connectivity and DNS resolution problems |
| Storage | 10% | - StatefulSet storage configuration - StorageClasses and dynamic provisioning - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - Volume types and access modes |
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NEW QUESTION # 14
You are running a Kubernetes cluster with a critical application that requires high availability and resilience. You have a Deployment named 'web-app' with multiple replicas. Your current DNS setup relies on external DNS providers, but you want to implement CoreDNS within your cluster to enhance DNS resolution performance and reliability. You need to configure CoreDNS to resolve DNS queries for services within the cluster and for external domains.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 Create a CoreDNS ConfigMap:
- Create a ConfigMap named coredns' containing the CoreDNS configuration. You can use a basic configuration file or a more complex one tailored to your specific needs.
2. Deploy CoreDNS: - Deploy CoreDNS as a Deployment using the 'coredns' ConfigMap.
3. Configure Services for DNS Resolution: - Create a Service named 'coredns' of type 'ClusterlP' that exposes the CoreDNS Deployment on the cluster network.
4. Update Cluster DNS Configuration: - Modify the 'kube-system namespace 'ConfigMap' named 'cluster-dns' to point to the 'coredns' Service for DNS resolution.
5. Verify CoreDNS Functionality: - Use 'kubectl exec -it -- sh -c "nslookup ..svc.cluster.local"' to test DNS resolution for services within the cluster. - Use "kubectl exec -it sh -c "nslookup example.com"' to test DNS resolution for external domains. - If everything is configured correctly, CoreDNS should successfully resolve DNS queries.
NEW QUESTION # 15
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 # 16
Create 5 nginx pods in which two of them is labeled env=prod and
three of them is labeled env=dev
Answer: A
NEW QUESTION # 17
Schedule a pod as follows:
* Name: nginx-kusc00101
* Image: nginx
* Node selector: disk=ssd
Answer:
Explanation:
NEW QUESTION # 18
Create a pod namedkucc8with asingle app container for each of the
following images running inside(there may be between 1 and 4images specified):
nginx + redis + memcached.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 19
......
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