Question 1

What is a Pod in Kubernetes?

Accepted Answer

A **Pod** is the smallest deployable unit in Kubernetes. It represents a single instance of a running process in your cluster and can contain one or more containers that share the same network and storage.

Question 2

Explain the difference between a Deployment and a StatefulSet.

Accepted Answer

`Deployments` are for stateless applications where pods are interchangeable and have random names. `StatefulSets` are for stateful applications (like databases) where pods require stable network identifiers, ordered deployment, and persistent storage.

Question 3

What is an Ingress Controller?

Accepted Answer

An **Ingress Controller** is a specialized load balancer that manages external access to services in a cluster, typically via HTTP/HTTPS. It implements the rules defined in `Ingress` resources to route traffic to the correct services.

Question 4

How does Kubernetes Master-Node communication work?

Accepted Answer

The master (control plane) communicates with nodes via the **API Server**. The **Kubelet** on each node communicates with the API Server to receive pod specs and report node status. The **NodePort** or **LoadBalancer** services facilitate external traffic.

Kubernetes Top Q&A

What is a Pod in Kubernetes?

Explain the difference between a Deployment and a StatefulSet.

What is an Ingress Controller?

How does Kubernetes Master-Node communication work?

Master Kubernetes Documentation

Complete Kubernetes Tutorial

Kubernetes Command Sheet