53. What is etcd in the context of a k8s cluster? 54. What is a namespace? 55. How is the kubectl utility useful?

etcd — is a distributed key-value store used in Kubernetes to store all cluster configuration information, state, and metadata. It ensures data consistency and reliability within the cluster.

Namespace in Kubernetes is a virtual cluster within a shared cluster that allows resources to be isolated and managed independently. This is useful for separating environments (e.g., dev, prod) or teams.

kubectl is a command-line utility for interacting with Kubernetes. It allows creating, modifying, deleting, and viewing cluster resources, managing pods, deployments, and other objects.