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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Workloads & Scheduling | 15% | - Understand Static Pods - Understand DaemonSets - Understand how to run multiple schedulers and configure scheduler policies - Understand resource limits and requests - Use label selectors to schedule Pods - Understand Deployments and rolling update/rollback - Use ConfigMaps and Secrets to configure applications - Understand how scheduler works |
| Topic 2: Troubleshooting | 30% | - Understand how to monitor applications - Troubleshoot cluster component failure - Manage container stdout & stderr logs - Troubleshoot networking - Troubleshoot application failure - Evaluate cluster and node logging |
| Topic 3: Cluster Architecture, Installation & Configuration | 25% | - Implement and configure a highly-available control plane - Use Helm and Kustomize to install cluster components - Understand CRDs, install and configure operators - Create and manage Kubernetes clusters using kubeadm - Understand extension interfaces (CNI, CSI, CRI, etc.) - Manage role based access control (RBAC) - Manage the lifecycle of Kubernetes clusters - Prepare underlying infrastructure for installing a Kubernetes cluster |
| Topic 4: Storage | 10% | - Understand persistent volume claims primitive - Understand Storage Classes and Persistent Volumes - Understand how to configure applications with persistent storage - Understand volume mode, access modes and reclaim policies |
| Topic 5: Services & Networking | 20% | - Know how to use Ingress controllers and Ingress resources - Understand and use CoreDNS - Use the Gateway API to manage Ingress traffic - Use ClusterIP, NodePort, LoadBalancer service types and endpoints - Define and enforce Network Policies - Understand connectivity between Pods |
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NEW QUESTION # 58
Create a Kubernetes secret as follows:
* Name: super-secret
* password: bob
Create a pod named pod-secrets-via-file, using the redis Image, which mounts a secret named super-secret at
/secrets.
Answer:
Explanation:
Create a second pod named pod-secrets-via-env, using the redis Image, which exports password as CONFIDENTIAL See the solution below.
Explanation
solution
NEW QUESTION # 59
You have a Deployment running a web application with three replicas. The application is exposed using a 'NodePort' service. You need to configure the service so that it allows traffic only from specific IP addresses (e.g., 192.168.1.10, 192.168.1.20).
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a NetworkPolicy:
- Define a NetworkPolicy resource that allows traffic from the specified IP addresses to the Deployment pods.
2. Apply the NetworkPolicy: - Apply the YAML file using 'kubectl apply -f networkpolicy.yaml'. 3. Verify the NetworkPolicy: - Check the status of the NetworkPolicy using 'kubectl get networkpolicies allow-specific-ips -n 4. Test the Access: - Attempt to access the web application from the allowed IP addresses. You should be able to access it. - Try to access the application from other IP addresses. You should not be able to access it. Note: Replace " with the actual namespace where your Deployment and NetworkPolicy are located.
NEW QUESTION # 60
You have a Deployment named 'database-deployment' with 2 replicas of a database container. You want to implement a rolling update strategy that allows for a maximum of one pod to be unavailable at any given time. However, you also want to ensure that the database container is restarted automatically when it encounters a failure or crashes. This restart policy should be applied only to the database containers within the deployment and not affect any other containers in the same pod.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Update the Deployment YAML:
- Update the 'replicas' to 2.
- Define 'maxUnavailable: 1' and 'maxSurge: 0' in the strategy.rollingUpdate' section to control the rolling update process.
- Configure a 'strategy.type' to 'RollingUpdate' to trigger a rolling update when the deployment is updated.
- Set 'spec.template.spec.containers[0].restartPolicy: Always' to ensure the database container restarts automatically when it encounters a failure.
2. Create the Deployment: - Apply the updated YAML file using 'kubectl apply -f database-deployment.yaml' 3. Verify the Deployment: - Check the status of the deployment using 'kubectl get deployments database-deployment' to confirm the rollout and updated replica count. 4. Test the Restart Policy: - Trigger a failure in the 'database' container within one of the pods. This can be done by sending a SIGKILL signal to the container or by simulating a crash within the container itself. - Observe that the 'database' container will be restarted automatically while other containers in the same pod will remain unaffected. 5. Trigger the Automatic Update: - Push a new image to the 'my-database-image:latest registry. 6. Monitor the Deployment: - Use "kubectl get pods -l app=database' to monitor the pod updates during the rolling update process. 7. Check for Successful Update: - Once the deployment is complete, use 'kubectl describe deployment database-deployment' to see that the 'updatedReplicas' field matches the 'replicas' field, indicating a successful update.
NEW QUESTION # 61
List "nginx-dev" and "nginx-prod" pod and delete those pods
Answer: B
NEW QUESTION # 62
Create a deployment as follows:
* Name:nginx-app
* Using containernginxwithversion 1.11.10-alpine
* The deployment should contain3replicas
Next, deploy the application with newversion1.11.13-alpine, byperforming a rolling update.
Finally, rollback that update to theprevious version1.11.10-alpine.
Answer:
Explanation:
See the solution below.
Explanation
solution
NEW QUESTION # 63
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