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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshooting | 30% | - Pod and application failures - Log collection and analysis - Control plane component failures - Cluster component health checks - Worker node issues and recovery - Network connectivity and DNS resolution problems |
| Topic 2: Cluster Architecture, Installation & Configuration | 25% | - Create and manage clusters with kubeadm - Prepare infrastructure for cluster installation - Manage RBAC - Implement high availability control plane - Understand CNI, CSI, CRI interfaces - Manage cluster lifecycle and upgrades - Work with CRDs and Operators - Install components via Helm / Kustomize |
| Topic 3: Storage | 10% | - Volume types and access modes - StorageClasses and dynamic provisioning - Persistent Volumes (PV) and Persistent Volume Claims (PVC) - StatefulSet storage configuration |
| Topic 4: Services & Networking | 20% | - Network policies - CNI configuration and troubleshooting - CoreDNS and service discovery - Ingress resources and controllers - Service types: ClusterIP, NodePort, LoadBalancer, ExternalName |
| Topic 5: Workloads & Scheduling | 15% | - Deployments, rolling updates and rollbacks - Pod lifecycle, init containers, probes - Configure applications with ConfigMaps and Secrets - Pod scheduling: node selector, affinity, taints/tolerations - Resource requests, limits and autoscaling |
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NEW QUESTION # 51
Score: 7%
Task
Create a new nginx Ingress resource as follows:
* Name: ping
* Namespace: ing-internal
* Exposing service hi on path /hi using service port 5678
Answer:
Explanation:
See the solution below.
Explanation
Solution:
vi ingress.yaml
#
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ping
namespace: ing-internal
spec:
rules:
- http:
paths:
- path: /hi
pathType: Prefix
backend:
service:
name: hi
port:
number: 5678
#
kubectl create -f ingress.yaml
NEW QUESTION # 52
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 # 53
You have a deployment that uses a PersistentVolumeClaim for its storage. The deployment is scaled to 5 replicas. You notice that each pod is using the same volume, leading to data corruption. Explain why this is happening and how you can fix the problem.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
This problem arises because the access mode of the PersistentVolumeClaim is set to 'ReadWriteMany', and the PVC is shared between all pods. When multiple pods access the same data simultaneously, data corruption can occur due to inconsistent updates. To fix the issue, you need to change the PVC access mode to 'ReadWriteOnce' and create individual PVCs for each pod. Here's how:
1. Update the PVC Access Mode:
- Modify the access mode in the PersistentVolumeClaim YAML file to 'ReadWriteOnce'.
2. Update the Deployment to use Multiple PVCs: - Update the Deployment YAML to use a unique PVC for each pod by specifying the 'persistentVolumeClaim' field in the 'spec.template.spec.containers.volumeMounts' section.
3. Apply the Changes: - Apply the updated PVC and Deployment YAML files using 'kubectl apply -f my-pvc.yaml' and "kubectl apply -f my-deployment.yaml' , respectively. - By setting the PVC access mode to 'ReadWriteOnce', each pod can access the volume exclusively. - The updated Deployment definition ensures that each pod has a unique PersistentVolumeClaim. The 'claimName' field in the volumes' section uses the 'pod.metadata.name' to create a unique name for each PVC. This ensures that each pod has its own dedicated storage, preventing data corruption and ensuring data consistency.]
NEW QUESTION # 54
Schedule a pod as follows:
Name: nginx-kusc00101
Image: nginx
Node selector: disk=ssd
Answer:
Explanation:
See the solution below.
Explanation
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\6 B.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\6 C.JPG
F:\Work\Data Entry Work\Data Entry\20200827\CKA\6 D.JPG
NEW QUESTION # 55
You are managing a Kubernetes cluster with several namespaces. You need to restrict access to the 'production' namespace, ensuring only authorized users can access resources within that namespace. Create a Role and RoleBinding that allows users in the 'developers' group to access pods and deployments within the 'production' namespace.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
Step 1: Create a Role
Create a Role named 'production-access' with the following permissions:
Step 2: Create a RoleBinding Create a RoleBinding named production-developers' that binds the 'production-access' role to the 'developers' group:
Step 3: Verify Verify the role and rolebinding have been created correctly: kubectl get role - -namespace=production kubectl get rolebinding - -namespace=production
NEW QUESTION # 56
......
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