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Question: What is Kubernetes and why is it used?
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Answer: The Kubernetes is an open-source container orchestration platform that automates the deployment, scaling,
and management of containerized applications. It is used to simplify the management of containerized applications,
improve scalability, and ensure high availability.
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Question: What are Pods in Kubernetes?
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Answer: In Kubernetes Pods are the smallest deployable units, consisting of one or more containers that share network
and storage resources. They represent a single instance of a running process in your cluster.
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Question: Can you explain Kubernetes ConfigMaps and Secrets?
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Answer: The ConfigMaps are Kubernetes objects used to store non-sensitive configuration data in key-value pairs,
which can be consumed by Pods as environment variables or mounted as files.
The Secrets, on the other hand, are used to store sensitive
information such as passwords, tokens, or keys, and are encoded or encrypted at rest.
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Question: What is a Kubernetes Deployment?
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Answer: A Deployment in Kubernetes is an object that manages a replicated application, ensuring that a specified number
of pod replicas are running at any given time. It enables you to declaratively manage updates to your application,
such as rolling updates and rollbacks.
A Kubernetes Deployment is used to tell Kubernetes how to create or modify instances of the pods that hold a containerized application.
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Question: Can you explain Kubernetes Services?
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Answer: The Kubernetes Services provide a way to expose an application running in a set of Pods to network traffic.
They abstract away the underlying network implementation, allowing Pods to be addressed by an IP address or DNS name
regardless of their actual location in the cluster.
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Question: What are Labels and Selectors in Kubernetes?
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Answer: The Labels are key-value pairs attached to Kubernetes objects such as Pods, Services, and Deployments,
used to organize and select subsets of objects. Selectors are expressions that match labels, enabling operations
to target specific sets of objects based on their labels.
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Question: What is a Kubernetes Namespace?
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Answer: A Namespace in Kubernetes provides a way to logically divide cluster resources into virtual clusters.
It enables multiple users, teams, or projects to share a physical cluster while maintaining isolation and resource quota enforcement.
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Question: Can you describe the difference between a StatefulSet and a Deployment?
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Answer: A StatefulSet is used to manage stateful applications that require stable, unique identifiers and stable storage.
It maintains a sticky identity for each Pod, allowing for ordered deployment and scaling.
A Deployment, on the other hand, is suitable for stateless applications and manages sets of identical Pods with no requirement
for stable identity or storage. A deployment can have multiple images set for multi-container pod.
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Question: What is the role of Kubernetes Service Discovery, and how does it work?
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Answer: The Kubernetes Service Discovery enables Pods and services within the cluster to discover and communicate
with each other dynamically. This is achieved through Kubernetes DNS,
allowing Pods to resolve service names to their corresponding IP addresses.
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