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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshooting | 30% | - Cluster component troubleshooting - Application and networking debugging |
| Topic 2: Cluster Architecture, Installation & Configuration | 25% | - Kubernetes architecture components - High availability setup - Cluster installation and configuration |
| Topic 3: Storage | 10% | - Storage classes - PersistentVolumes and PersistentVolumeClaims |
| Topic 4: Workloads & Scheduling | 15% | - Scheduling constraints - Deployments and rolling updates - ConfigMaps and Secrets |
| Topic 5: Services & Networking | 20% | - Ingress configuration - Network policies - Services (ClusterIP, NodePort, LoadBalancer) |
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NEW QUESTION # 78
Your company has a Kubernetes cluster with a production namespace (prod) where only authorized engineers can access sensitive dat a. You need to implement an RBAC policy that allows only engineers with a specific label ("role: engineer") to read data from a specific secret named "secret-sensitive" in the "prod" namespace. Describe how you would configure RBAC to achieve this.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
Step 1: Define a Role that allows reading the specific secret:
Step 2: Create a RoleBinding to associate the Role with users labeled as "role: engineer":
Step 3: Ensure users have the necessary labels: - Users or service accounts must be assigned the label "role: engineer" to access the secret. - The Role restricts access to the "secret-sensitive" in the "prod" namespace to only "get" requests. - The RoleBinding associates the Role with users who have the label "role: engineer". - This ensures that only authorized engineers can read data from the "secret-sensitive" secret. ,
NEW QUESTION # 79
Get list of PVs and order by size and write to file "/opt/pvstorage.txt"
Answer:
Explanation:
kubectl get pv --sort-by=.spec.capacity.storage > /opt/pv storage.txt
NEW QUESTION # 80
Get the list of pods of webapp deployment
Answer: A
NEW QUESTION # 81
You have a Kubernetes cluster with two worker nodes and a single Nginx service deployed. You want to expose this service externally using a LoadBalancer service type but only want traffic to be directed to pods on a specific worker node. How would you achieve this?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Node Selector:
- Create a Node Selector label on the worker node where you want to host the Nginx pods.
- Example:
- Apply this configuration using 'kubectl apply -f node-config.yaml'. 2. Configure the Deployment: - Update the Nginx deployment to include the Node Selector label in its pod template. - Example:
- Apply the updated deployment configuration using 'kubectl apply -f nginx-deployment.yamr. 3. Create a LoadBalancer Service: - Create a LoadBalancer type service that selects the Nginx pods with the 'app=nginx' label. - Example:
- Apply the service configuration using 'kubectl apply -f nginx-service.yamP. 4. Verify the Deployment: - Confirm the deployment of the Nginx pods on the specified worker node using 'kubectl get pods -l app=nginx -o wide'. - Check the LoadBalancer service's external IP address using 'kubectl get services nginx-service'. - Access the Nginx service using the external IP address. All traffic should be routed to the pods on the worker node with the 'worker-type: nginx' label. ---
NEW QUESTION # 82
You have a Deployment named 'my-app' running a web application with three replicas. The application is exposed using a 'LoadBalancer' service. You want to create a 'ClusterlP' service for internal communication within the Kubernetes cluster and route traffic from the 'LoadBalancer' service to the 'ClusterlP' service.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1 . Create the ClusterlP service:
- Define a 'ClusterlP' service that points to the my-app' Deployment.
2. Create the LoadBalancer service: - Define a 'LoadBalancer service that routes traffic to the my-app-internar service.
3. Apply the Service YAMLs: - Apply the YAML files for both services using 'kubectl apply -f my-app-internal.yamP and 'kubectl apply -f my- app-external.yamr. 4. Verify the Services: - Check the status of both services using 'kubectl get services'. You should see the 'my-app-internal' service with a 'ClusterlP' and the my-app-external' service with an external IP address. 5. Test the Routing: - Access the application through the external IP address of the 'my-app-external' service. The traffic should be routed to the 'my-app-internal' service and then to the my-app' Deployment. Note: Replace with the actual namespace where your Deployment and Services are located.
NEW QUESTION # 83
......
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