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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Workloads & Scheduling | 15% | - Pod lifecycle, init containers, probes - Pod scheduling: node selector, affinity, taints/tolerations - Deployments, rolling updates and rollbacks - Resource requests, limits and autoscaling - Configure applications with ConfigMaps and Secrets |
| Topic 2: Troubleshooting | 30% | - Log collection and analysis - Network connectivity and DNS resolution problems - Worker node issues and recovery - Cluster component health checks - Control plane component failures - Pod and application failures |
| Topic 3: Services & Networking | 20% | - Network policies - CNI configuration and troubleshooting - Ingress resources and controllers - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - CoreDNS and service discovery |
| Topic 4: Cluster Architecture, Installation & Configuration | 25% | - Implement high availability control plane - Understand CNI, CSI, CRI interfaces - Create and manage clusters with kubeadm - Manage RBAC - Prepare infrastructure for cluster installation - Manage cluster lifecycle and upgrades - Work with CRDs and Operators - Install components via Helm / Kustomize |
| Topic 5: Storage | 10% | - StorageClasses and dynamic provisioning - Volume types and access modes - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - StatefulSet storage configuration |
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NEW QUESTION # 10
Score: 7%
Task
First, create a snapshot of the existing etcd instance running at https://127.0.0.1:2379, saving the snapshot to
/srv/data/etcd-snapshot.db.
Next, restore an existing, previous snapshot located at /var/lib/backup/etcd-snapshot-previo us.db
Answer:
Explanation:
Solution:
#backup
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt --cert=/opt
/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot save /etc/data/etcd-snapshot.db
#restore
ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379" --cacert=/opt/KUIN000601/ca.crt --cert=/opt
/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot restore /var/lib/backup/etcd- snapshot-previoys.db
NEW QUESTION # 11
Print all pod name and all image name and write it to a file
name "/opt/pod-details.txt"
Answer:
Explanation:
kubectl get pods -o=custom-columns='Pod Name:metadata.name','Image:spec.containers[*].image' > /opt/pod-details.txt
NEW QUESTION # 12
You need to expose a service with multiple endpoints, each serving a specific path, using a single Ingress resource. Each endpoint is running on a different port, and you want to configure SSL termination for the entire Ingress. How would you achieve this?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the Ingress Resource:
- Create an Ingress resource with the desired host and paths for each endpoint.
- Example:
- This configuration defines the host "example.com" and two paths: "/api" routed to "api-service" on port 8080 and "[blog" routed to "blog-service" on port 8081. 2. Create the TLS Secret: - Create a Secret containing your SSL certificate and private key for the domain "example.com". - Example:
- Replace " and with the actual content of your SSL certificate and private key. 3. Deploy the Services: - Ensure that the services "api-service" and "blog-service" are deployed and accessible on their respective ports (8080 and 8081 4. Apply the Ingress Configuration: - Apply the Ingress configuration using 'kubectl apply -f multiple-endpoints-ingress.yamP. 5. Verify the Ingress: - Access the Ingress using the defined host "example.com". - Check that requests to "/api" are routed to the "api-service" and requests to "[blog" are routed to the "blog- service", with SSL termination working as expected.
NEW QUESTION # 13
Your organization uses a private DNS server for internal services and requires all Kubernetes pods to resolve names against this DNS server. You need to configure CoreDNS to forward all DNS requests to this private server.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Configure CoreDNS with Forwarding:
- In the CoreDNS ConfigMap, configure the 'forward' plugin to forward all DNS requests to your private DNS server.
2. Test DNS Resolution: - Use the 'nslookup' command from a pod in your cluster to test DNS resolution for internal services. - The requests should be forwarded to the private DNS server, and the corresponding records should be returned.
NEW QUESTION # 14
Create a Pod nginx and specify a CPU request and a CPU limit of 0.5 and 1 respectively.
Answer: B
NEW QUESTION # 15
......
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