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Cracking the Kubernetes Interview

Cracking the Kubernetes Interview

By : Viktor Vedmich, Alexander Dovnar
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Cracking the Kubernetes Interview

Cracking the Kubernetes Interview

By: Viktor Vedmich, Alexander Dovnar

Overview of this book

In the high-stakes world of cloud-native technologies, Kubernetes technical interviews are notoriously challenging, and theory-heavy resources leave candidates unprepared for real-world scenarios. This guide by Viktor Vedmich and Alexander Dovnar, two seasoned professionals with decades of combined experience in DevOps, AWS, and Kubernetes architecture, bridges that gap to help you unlock actionable strategies and insights to excel in even the toughest interviews. Beginning with core concepts such as Pods and Services, the book guides you through scaling, networking, GitOps, and deployment strategies. You’ll explore advanced topics, including security, observability, monitoring, and troubleshooting, all framed in the context of real-world interviews. Each chapter includes practical scenarios and authentic questions that test both your understanding and problem-solving skills. Rather than relying on rote memorization, this guide helps you develop the depth and confidence expected of top-tier Kubernetes professionals. By the end of this hands-on journey, you'll be ready to take on roles from junior DevOps engineer to senior architect, equipped with the practical expertise needed to stand out in today’s competitive hiring process.
Table of Contents (27 chapters)
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1
Part 1: Introduction to Kubernetes
4
Part 2: Schedulers, Workloads, and Scaling
8
Part 3: Networking, Services, and Security
13
Part 4: Deployment, Application Management, and GitOps
16
Part 5: Reliability, Monitoring, and Maintenance
21
Part 6: Troubleshooting and Best Practices
25
Other Books You May Enjoy
26
Index

How to manage network security within the Kubernetes cluster

In general, computer networks in the IT world, particularly Kubernetes networks, are the foundation for Kubernetes workloads (we have already discussed Kubernetes networking basics in Chapter 6). Cluster administrators should control everything that happens within their clusters, and network security is also one of their highest priorities. When the interviewer asks you a question about this topic, your answer can go in multiple directions, so it’s (again) essential to clarify the exact aspect of the Kubernetes network security you’re expected to expand upon. First, you can start by listing the main reasons for taking care of network security in the Kubernetes clusters and workloads:

  • Effective isolation: Proper isolation will prevent unauthorized access between applications, teams, or departments. This isolation is essential for maintaining data privacy, confidentiality, and regulatory compliance...
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Cracking the Kubernetes Interview
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