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Certified Kubernetes Administrator
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Certified Kubernetes Administrator
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25 Questions

1. the scheduler does its best to ensure that every process runs. Scheduling, in this case, refers to the decision process of placing containers onto nodes in accordance with their declared, compute requirements.

2. The service cluster IP is the internal, AKA private IP, for each service. The external IP is not available for NodePort services. But if it were then this would be the public IP for a service

3. The Kubernetes Control Plane consists of a collection of processes running on your cluster. what are those processes?

4. The command copies the configuration to the users home directory and sets the environment variable for use with the CLI.

5. namespaces provide network isolation depends on which networking solution is deployed with Kubernetes. When the solution doesn't provide inter-namespace network isolation, if a pod in namespace foo knows the IP address of a pod in namespace bar, there is nothing preventing it from sending traffic, such as HTTP requests, to the other pod.

6. kubectl rollout pause deployment [deployment name]

7. the normal one:

8. Command to modify labels on existing pods.

9. A pod is only ready once all init containers complete successfully.

10. DCOS also includes a kind of package manager to easily deploy systems like Kafka or Spark. You can even run Kubernetes on DCOS, given its flexibility for different types of workloads.

11. True

12. command to initialize kubernetes master using flannel network

13. The service ................is the internal, AKA private IP, for each service.

14. First, Metrics-server must be running on the cluster, and pods must request resources.

15. kubectl rollout undo deployment [deployment name]

16. kubectl delete hpa [deployment name]

17. To expose the port of a running pod called first-deployment using NodePort

18. The imagePullPolicy is useful when dealing with floating tags like latest. If the value is set to IfNotPresent. Kubernetes will pull the image the first time it's used and it's not pulled again after that. Kubernetes defaults to always if a latest tag is specified or if not present otherwise.

19. The tag is used to bypass the Discovery Token verification.

20. ReadWriteOnce access mode means this volume may be mounted for reading and writing by a single pod at a time

21. true

22. Network option that provides a dynamic port to a container

23. kubectl delete pod [pod name]

24. kubectl edit.

25. kubectl apply -f filename.yml

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