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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cluster Architecture, Installation & Configuration | 25% | - Prepare infrastructure for cluster installation - Understand CNI, CSI, CRI interfaces - Create and manage clusters with kubeadm - Manage cluster lifecycle and upgrades - Manage RBAC - Install components via Helm / Kustomize - Work with CRDs and Operators - Implement high availability control plane |
| Topic 2: Workloads & Scheduling | 15% | - Deployments, rolling updates and rollbacks - Configure applications with ConfigMaps and Secrets - Pod scheduling: node selector, affinity, taints/tolerations - Pod lifecycle, init containers, probes - Resource requests, limits and autoscaling |
| Topic 3: Storage | 10% | - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - Volume types and access modes - StorageClasses and dynamic provisioning - StatefulSet storage configuration |
| Topic 4: Services & Networking | 20% | - CNI configuration and troubleshooting - Network policies - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - Ingress resources and controllers - CoreDNS and service discovery |
| Topic 5: Troubleshooting | 30% | - Worker node issues and recovery - Log collection and analysis - Network connectivity and DNS resolution problems - Control plane component failures - Cluster component health checks - Pod and application failures |
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NEW QUESTION # 44
Ensure a single instance of podnginxis running on each node of theKubernetes cluster wherenginxalso represents the Image name whichhas to be used. Do not override anytaints currently in place.
UseDaemonSetto complete thistask and useds-kusc00201asDaemonSet name.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 45
You are running a service that handles requests from multiple pods. How can you scale the service to handle increased traffic without impacting the service availability during the scaling process?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Use a Deployment:
- Deploy the service using a Deployment with the desired number of replicas.
2. Define a Service:
- Create a Service that exposes the application to the outside world.
- Use a 'type: LoadBalancer' to distribute traffic across the pods.
3. Implement Horizontal Pod Autoscaler (HPA):
- Create an HPA that monitors the service's CPU usage.
- Configure the HPA to scale the Deployment based on the CPU utilization.
4. Test the Autoscaling: - Simulate increased traffic to the service. - Observe the HPA scaling the Deployment to meet the demand. 5. Monitor the Service: - Monitor the service's performance and ensure that it remains available and stable during scaling. 6. Adjust HPA Configuration: - Fine-tune the HPA configuration to optimize scaling based on specific performance needs.
NEW QUESTION # 46
Label a node as app=test and verify
Answer:
Explanation:
kubectl label node node-name app=test // Verify kubectl get no -show-labels kubectl get no -l app=test
NEW QUESTION # 47
You have a Kubernetes cluster with multiple namespaces. You need to set up RBAC to allow a specific user, "developer", to only deploy and manage pods within the "dev" namespace, but restrict access to other resources.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Create the following YAML files:
1. Role.yaml:
2. RoleBinding.yaml:
Solution (Step by Step) : 1 . Create the Role: Apply the 'Role.yamP file using 'kubectl apply -f Role.yamr. This defines the permissions granted to the role 'pod-manager-dev' within the 'dev' namespace. 2. Create the RoleBinding: Apply the 'RoleBinding.yaml' file using 'kubectl apply -f RoleBinding.yaml'. This binds the 'pod-manager-dev' role to the user 'developer' , allowing them to access resources defined in the role. 3. Verify Access: As the user 'developer' , try deploying a pod or managing deployments within the 'dev' namespace. Verify that the user has the necessary permissions. 4. Test Restrictions: Try accessing resources outside the 'dev' namespace or trying actions not defined in the role (e.g., creating a service in the 'dev' namespace). Verify that the user is denied access.
NEW QUESTION # 48
You are deploying an application on Kubernetes. You need to ensure that a minimum of three pods are always running for this application. How can you achieve this? Describe how to configure the deployment with a replica count and a liveness probe to monitor the health of the pods.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Deployment with a Replica Count:
- Create a YAML file named 'deployment.yamr with the following content:
- Apply the YAML file using 'kubectl apply -f deployment.yaml&. 2. Configure a Liveness Probe: - Update the 'deployment.yaml' file to include a liveness probe. For example, you could use a HTTP probe:
- Apply the updated YAML file using 'kubectl apply -f deployment.yaml'. 3. Verify the Deployment: - Check the status of the deployment using get deployments myapp-deploymen. - Ensure that three pods are running and that the liveness probe is monitoring their health. You can use 'kubectl describe pod myapp-deployment-XXXX' (where XXXX is the pod name) to see the details of the pod and the liveness probe status.
NEW QUESTION # 49
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