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Linux Foundation CKA (Certified Kubernetes Administrator) Program Exam is a certification program designed for professionals who want to demonstrate their expertise in managing, deploying, and troubleshooting Kubernetes clusters. Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications. As containerization becomes increasingly popular, Kubernetes has emerged as the go-to solution for managing containers at scale.
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NEW QUESTION # 35
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 # 36
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 # 37
You have a Deployment named 'wordpress-deployment' running a WordPress application with two pods. The WordPress application needs to access a shared secret key stored in a Secret named 'wordpress- secret'. How do you ensure the secret key is securely mounted and available to both pods?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the Secret:
- Create a Secret named 'wordpress-secret' containing the shared secret key. Use 'kubectl create secret generic' with the '-from-literal' flag to create a generic Secret:
kubectl create secret generic wordpress-secret --from-literal=wordpress-secret="your secret_key"
2. Configure the Deployment:
- Modify the 'wordpress-deployment' Deployment to mount the 'wordpress-secref Secret as a volume in the Pod template. Use 'volumeMounts' to specify the mount path and 'volumes' to define the Secret as a volume source:
3. Apply the Changes: - Apply the modified Deployment YAML using 'kubectl apply -f wordpress-deployment.yaml'. 4. Verify the Secret Mount: - Use 'kubectl exec' to access a pod in the 'wordpress-deployment' and verify that the Secret is mounted at the specified path (e.g., 'Ivar/run/secrets/wordpress'). 5. Access the Secret Key: - Within the WordPress application's code, access the secret key from the mounted path.
NEW QUESTION # 38
Create a pod as follows:
* Name: non-persistent-redis
* container Image: redis
* Volume with name: cache-control
* Mount path: /data/redis
The pod should launch in the staging namespace and the volume must not be persistent.
Answer:
Explanation:
NEW QUESTION # 39
You have a Kubernetes cluster with three nodes. You need to create a Role that allows users in the "developers" group to access the "nginx-deployment" deployment in the "default" namespace. This role should only permit users to view and update the deployment, not delete it.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the Role:
2. Create the RoleBinding:
3. Apply the Role and RoleBinding: bash kubectl apply -f role.yaml kubectl apply -f rolebinding.yaml
NEW QUESTION # 40
......
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