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| Section | Weight | Objectives |
|---|---|---|
| Storage | 10% | - PersistentVolumes and PersistentVolumeClaims - Storage classes |
| Workloads & Scheduling | 15% | - Scheduling constraints - ConfigMaps and Secrets - Deployments and rolling updates |
| Services & Networking | 20% | - Network policies - Services (ClusterIP, NodePort, LoadBalancer) - Ingress configuration |
| Cluster Architecture, Installation & Configuration | 25% | - High availability setup - Kubernetes architecture components - Cluster installation and configuration |
| Troubleshooting | 30% | - Cluster component troubleshooting - Application and networking debugging |
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Our Certified Kubernetes Administrator (CKA) Program Exam CKA questions PDF is a complete bundle of problems presenting the versatility and correlativity of questions observed in past exam papers. These questions are bundled into Certified Kubernetes Administrator (CKA) Program Exam PDF questions following the official study guide. Linux Foundation CKA PDF Questions are a portable, printable document that simultaneously plays on multiple devices. Our Linux Foundation CKA PDF questions consists of problems in all aspects, whether theoretical, practical, or analytical.
NEW QUESTION # 77
You have a Deployment running an application that requires a specific network policy. How can you define a network policy that allows only traffic from Pods belonging to the same namespace as the application and denies all other traffic?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Network Policy Definition:
2. Explanation: - 'apiVersion: networking.k8s.io/v1 ' : Specifies the API version for NetworkPolicy resources. - 'kind: NetworkPolicy': Specifies that this is a NetworkPolicy resource. - 'metadata.name: allow-same-namespace': Sets the name of the NetworkPolicy. - 'metadata.namespace: Specifies the namespace where the NetworkPolicy is applied. Replace " with the actual namespace where your deployment is running. - 'spec.podSelector: {F: This empty podSelector means the NetworkPolicy applies to all Pods in the namespace. - 'spec.ingress': This section defines the rules for incoming traffic. - 'spec.ingress.from.podSelector: {F: This allows traffic from any Pods within the same namespace. 3. How it works: - This NetworkPolicy allows incoming traffic only from Pods within the same namespace where the Deployment is running. It explicitly denies all other traffic, effectively isolating the application to communication only within its namespace. 4. Implementation: - Apply the YAML using 'kubectl apply -f allow-same-namespace.yaml' 5. Verification: After applying the NetworkPolicy, test the communication between Pods within the same namespace and Pods in other namespaces. You should observe that the NetworkPolicy successfully enforces the defined restrictions.
NEW QUESTION # 78
List "nginx-dev" and "nginx-prod" pod and delete those pods
Answer:
Explanation:
kubect1 get pods -o wide
kubectl delete po "nginx-dev" kubectl delete po "nginx-prod"
NEW QUESTION # 79
You have a Kubernetes cluster with a Deployment named 'web-app' that runs a web application. You need to set up a mechanism to automatically scale the deployment based on the CPU utilization of the pods. The scaling should be triggered when the average CPU utilization across all pods reaches 70%. You should set the minimum and maximum replicas to 2 and 5 respectively.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Horizontal Pod Autoscaler (HPA):
- Use "kubectl create hpa' command to create an HPA resource.
- Specify the name of the HPA, the Deployment to scale, the target CPU utilization (70%), and the minimum and maximum replicas.
kubectl create hpa web-app-hpa --min=2 --max=5 --cpu-utilization-percentage=70 --target- ref=Deployment/web-app
2. Verify the HPA Creation:
- Use 'kubectl get hpa' command to check if the HPA was created successfully. You should see an HPA named 'web-app-hpa' with the configured settings.
3. Monitor the Scaling Behavior:
- You can use the 'kubectl get pods -l command to monitor the number of pods running as the CPU utilization changes.
- When the average CPU utilization across the pods reaches 70%, the HPA will automatically scale up the Deployment to add more pods.
- Conversely, when the CPU utilization falls below the threshold, the HPA will scale down the Deployment to reduce the number of pods.
Ensure that the 'metrics-server' is installed in your cluster to enable CPU utilization monitoring.,
NEW QUESTION # 80
Score: 13%
Task
A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a Ready state, ensuring that any changes are made permanent.
Answer:
Explanation:
Solution:
sudo -i
systemctl status kubelet
systemctl start kubelet
systemctl enable kubelet
NEW QUESTION # 81
List "nginx-dev" and "nginx-prod" pod and delete those pods
Answer: A
NEW QUESTION # 82
......
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