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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Services & Networking | 20% | - Network policies - Ingress resources and controllers - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName - CNI configuration and troubleshooting - CoreDNS and service discovery |
| Topic 2: Workloads & Scheduling | 15% | - Pod lifecycle, init containers, probes - Configure applications with ConfigMaps and Secrets - Pod scheduling: node selector, affinity, taints/tolerations - Resource requests, limits and autoscaling - Deployments, rolling updates and rollbacks |
| Topic 3: Cluster Architecture, Installation & Configuration | 25% | - Implement high availability control plane - Manage RBAC - Create and manage clusters with kubeadm - Understand CNI, CSI, CRI interfaces - Prepare infrastructure for cluster installation - Install components via Helm / Kustomize - Work with CRDs and Operators - Manage cluster lifecycle and upgrades |
| Topic 4: Troubleshooting | 30% | - Pod and application failures - Control plane component failures - Network connectivity and DNS resolution problems - Log collection and analysis - Cluster component health checks - Worker node issues and recovery |
| Topic 5: Storage | 10% | - StatefulSet storage configuration - Volume types and access modes - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - StorageClasses and dynamic provisioning |
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NEW QUESTION # 54
Set the node namedek8s-node-1asunavailable and reschedule all thepods running on it.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 55
Scale the deployment from 5 replicas to 20 replicas and verify
Answer:
Explanation:
kubectl scale deploy webapp --replicas=20 kubectl get deploy webapp kubectl get po -l app=webapp
NEW QUESTION # 56
Get list of all pods in all namespaces and write it to file "/opt/pods-list.yaml"
Answer:
Explanation:
See the solution below.
Explanation
kubectl get po -all-namespaces > /opt/pods-list.yaml
NEW QUESTION # 57
List all the pods sorted by name
Answer:
Explanation:
kubectl get pods --sort-by=.metadata.name
NEW QUESTION # 58
You have a Deployment named 'worker-deployment' that runs a set of worker Pods. You need to configure a PodDisruptionBudget (PDB) for this deployment, ensuring that at least 60% of the worker Pods are always available, even during planned or unplanned disruptions. How can you achieve this?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. PDB YAML Definition:
2. Explanation: - 'apiVersion: policy/vl ' : Specifies the API version for PodDisruptionBudget resources. - 'kind: PodDisruptionBudget': Specifies that this is a PodDisruptionBudget resource. - 'metadata.name: worker-pdb": Sets the name of the PDB. - 'spec.selector.matchLabels: app: worker': This selector targets the Pods labeled with 'app: worker' , ensuring the PDB applies to the 'worker-deployment' Pods. - 'spec.minAvailable: 60%': Specifies that at least 60% of the total worker Pods must remain available during disruptions. This means that if your deployment has 5 replicas, at least 3 Pods must remain running. 3. How it works: - The 'minAvailable' field in the PDB can be specified as a percentage of the total number of Pods in the deployment or as an absolute number of Pods. In this case, we are using a percentage ('600/0') to ensure a flexible approach to maintaining availability, even if the number of replicas changes. 4. Implementation: - Apply the YAML using 'kubectl apply -f worker-pdb.yaml' 5. Verification: You can verify the PDB's effectiveness by trying to delete Pods or simulating a node failure. The scheduler will prevent actions that would violate the 'minAvailable' constraint, ensuring that at least 60% of the worker Pods remain available.
NEW QUESTION # 59
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