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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Storage | 10% | - Volume types and access modes - StorageClasses and dynamic provisioning - StatefulSet storage configuration - Persistent Volumes (PV) and Persistent Volume Claims (PVC) |
| Topic 2: Workloads & Scheduling | 15% | - Pod scheduling: node selector, affinity, taints/tolerations - Resource requests, limits and autoscaling - Configure applications with ConfigMaps and Secrets - Deployments, rolling updates and rollbacks - Pod lifecycle, init containers, probes |
| Topic 3: Troubleshooting | 30% | - Worker node issues and recovery - Control plane component failures - Network connectivity and DNS resolution problems - Cluster component health checks - Log collection and analysis - Pod and application failures |
| Topic 4: Services & Networking | 20% | - CNI configuration and troubleshooting - Ingress resources and controllers - CoreDNS and service discovery - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Network policies |
| Topic 5: Cluster Architecture, Installation & Configuration | 25% | - Manage RBAC - Understand CNI, CSI, CRI interfaces - Implement high availability control plane - Create and manage clusters with kubeadm - Install components via Helm / Kustomize - Work with CRDs and Operators - Prepare infrastructure for cluster installation - Manage cluster lifecycle and upgrades |
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NEW QUESTION # 34
Create 2 nginx image pods in which one of them is labelled with env=prod and another one labelled with env=dev and verify the same.
Answer:
Explanation:
kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx- prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like "creationTimestamp: null"
"dnsPolicy: ClusterFirst"
vim nginx-prod-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: prod
name: nginx-prod
spec:
containers:
- image: nginx
name: nginx-prod
restartPolicy: Always
# kubectl create -f nginx-prod-pod.yaml
kubectl run --generator=run-pod/v1 --image=nginx --
labels=env=dev nginx-dev --dry-run -o yaml > nginx-dev-pod.yaml
apiVersion: v1
kind: Pod
metadata:
labels:
env: dev
name: nginx-dev
spec:
containers:
- image: nginx
name: nginx-dev
restartPolicy: Always
# kubectl create -f nginx-prod-dev.yaml
Verify :
kubectl get po --show-labels
kubectl get po -l env=prod
kubectl get po -l env=dev
NEW QUESTION # 35
Get list of all the nodes with labels
Answer:
Explanation:
kubectl get nodes --show-labels
NEW QUESTION # 36
Create a Job with an image node which prints node version and
verifies there is a pod created for this job
Answer: A
NEW QUESTION # 37
You have a multi-cluster Kubernetes environment, and you need to implement cross-cluster communication between two clusters named 'cluster 1 and 'cluster?. You need to use CoreDNS to resolve service names across clusters. For example, a pod in cluster 1' should be able to access a service named 'my- service' running in 'cluster2'.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Install CoreDNS in Both Clusters:
- Follow the steps in the previous solution to install and configure CoreDNS in both 'cluster 1 ' and 'cluster?.
2. Configure Cross-Cluster DNS in CoreDNS:
- In 'cluster 1 ' , modify the CoreDNS configuration file to forward requests for services in 'cluster? to the CoreDNS service in 'cluster?.
- Repeat the same configuration for 'cluster2' , forwarding requests for services in 'cluster 1 ' to the CoreDNS service in 'clusterl'. 3. Configure Services with External Names: - In 'cluster? , configure the 'my-service' service to have an 'externalName' field set to 'my- service.clusterl .locar. This will tell CoreDNS to forward requests for 'my-service' to the CoreDNS service in 'cluster 1'.
4. Test Cross-Cluster Communication: - Deploy a pod in 'cluster 1 ' that tries to access 'my-service' in 'cluster?. - Verify that the pod can successfully communicate with the service in 'cluster? using its service name.
NEW QUESTION # 38
Score: 4%
Task
Check to see how many nodes are ready (not including nodes tainted NoSchedule ) and write the number to
/opt/KUSC00402/kusc00402.txt
Answer:
Explanation:
See the solution below.
Explanation
Solution:
kubectl describe nodes | grep ready|wc -l
kubectl describe nodes | grep -i taint | grep -i noschedule |wc -l
echo 3 > /opt/KUSC00402/kusc00402.txt
#
kubectl get node | grep -i ready |wc -l
# taintsnoSchedule
kubectl describe nodes | grep -i taints | grep -i noschedule |wc -l
#
echo 2 > /opt/KUSC00402/kusc00402.txt
NEW QUESTION # 39
......
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