Book Image

Hands-on Kubernetes on Azure, Third Edition - Third Edition

By : Nills Franssens, Shivakumar Gopalakrishnan, Gunther Lenz
Book Image

Hands-on Kubernetes on Azure, Third Edition - Third Edition

By: Nills Franssens, Shivakumar Gopalakrishnan, Gunther Lenz

Overview of this book

Containers and Kubernetes containers facilitate cloud deployments and application development by enabling efficient versioning with improved security and portability. With updated chapters on role-based access control, pod identity, storing secrets, and network security in AKS, this third edition begins by introducing you to containers, Kubernetes, and Azure Kubernetes Service (AKS), and guides you through deploying an AKS cluster in different ways. You will then delve into the specifics of Kubernetes by deploying a sample guestbook application on AKS and installing complex Kubernetes apps using Helm. With the help of real-world examples, you'll also get to grips with scaling your applications and clusters. As you advance, you'll learn how to overcome common challenges in AKS and secure your applications with HTTPS. You will also learn how to secure your clusters and applications in a dedicated section on security. In the final section, you’ll learn about advanced integrations, which give you the ability to create Azure databases and run serverless functions on AKS as well as the ability to integrate AKS with a continuous integration and continuous delivery (CI/CD) pipeline using GitHub Actions. By the end of this Kubernetes book, you will be proficient in deploying containerized workloads on Microsoft Azure with minimal management overhead.
Table of Contents (22 chapters)
1
Foreword
Free Chapter
2
Section 1: The Basics
5
Section 2: Deploying on AKS
11
Section 3: Securing your AKS cluster and workloads
16
Section 4: Integrating with Azure managed services
21
Index

Neutralizing threats using Azure Defender

Now that you've explored the configuration best practices using Azure Security Center and Secure Score, you will explore how to investigate and deal with security alerts and active threats. Some of the workloads you created should have triggered security alerts by now, which you can investigate in Azure Defender.

Specifically, in the Deploying offending workloads section, you created three workloads that trigger security alerts in Azure Defender:

  • crypto-miner.yaml: By deploying this file, you created a crypto-miner on your cluster. This crypto-miner will generate two security alerts in Azure Defender as you will see in this section. One alert will be generated by monitoring the Kubernetes cluster itself, while another alert will be generated based on DNS traffic.
  • role.yaml: This file contained a cluster-wide role with very broad permissions. This will generate a security alert in Azure Defender notifying you of the risk...