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| Section | Weight | Objectives |
|---|---|---|
| Troubleshooting | 30% | - Troubleshoot application failure - Troubleshoot networking - Evaluate cluster and node logging - Manage container stdout & stderr logs - Troubleshoot cluster component failure - Understand how to monitor applications |
| Cluster Architecture, Installation & Configuration | 25% | - Prepare underlying infrastructure for installing a Kubernetes cluster - Manage the lifecycle of Kubernetes clusters - Use Helm and Kustomize to install cluster components - Manage role based access control (RBAC) - Implement and configure a highly-available control plane - Understand extension interfaces (CNI, CSI, CRI, etc.) - Create and manage Kubernetes clusters using kubeadm - Understand CRDs, install and configure operators |
| Workloads & Scheduling | 15% | - Use ConfigMaps and Secrets to configure applications - Understand Static Pods - Understand how scheduler works - Understand how to run multiple schedulers and configure scheduler policies - Understand Deployments and rolling update/rollback - Understand DaemonSets - Use label selectors to schedule Pods - Understand resource limits and requests |
| Storage | 10% | - Understand persistent volume claims primitive - Understand how to configure applications with persistent storage - Understand volume mode, access modes and reclaim policies - Understand Storage Classes and Persistent Volumes |
| Services & Networking | 20% | - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Know how to use Ingress controllers and Ingress resources - Understand and use CoreDNS - Define and enforce Network Policies - Understand connectivity between Pods - Use the Gateway API to manage Ingress traffic |
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NEW QUESTION # 61
You are running a Kubernetes cluster with a critical application that requires high availability and resilience. You have a Deployment named 'web-app' with multiple replicas. Your current DNS setup relies on external DNS providers, but you want to implement CoreDNS within your cluster to enhance DNS resolution performance and reliability. You need to configure CoreDNS to resolve DNS queries for services within the cluster and for external domains.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 Create a CoreDNS ConfigMap:
- Create a ConfigMap named coredns' containing the CoreDNS configuration. You can use a basic configuration file or a more complex one tailored to your specific needs.
2. Deploy CoreDNS: - Deploy CoreDNS as a Deployment using the 'coredns' ConfigMap.
3. Configure Services for DNS Resolution: - Create a Service named 'coredns' of type 'ClusterlP' that exposes the CoreDNS Deployment on the cluster network.
4. Update Cluster DNS Configuration: - Modify the 'kube-system namespace 'ConfigMap' named 'cluster-dns' to point to the 'coredns' Service for DNS resolution.
5. Verify CoreDNS Functionality: - Use 'kubectl exec -it -- sh -c "nslookup ..svc.cluster.local"' to test DNS resolution for services within the cluster. - Use "kubectl exec -it sh -c "nslookup example.com"' to test DNS resolution for external domains. - If everything is configured correctly, CoreDNS should successfully resolve DNS queries.
NEW QUESTION # 62
Create a redis pod and expose it on port 6379
Answer: A
NEW QUESTION # 63
Score: 4%
Task
Scale the deployment presentation
Answer:
Explanation:
See the solution below.
Explanation
Solution:
kubectl get deployment
kubectl scale deployment.apps/presentation --replicas=6
NEW QUESTION # 64
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:
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 # 65
Get the list of pods of webapp deployment
Answer: B
NEW QUESTION # 66
......
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