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

Summary

In this chapter, you've continued your exploration of security in AKS. Whereas Chapter 8, Role-based access control in AKS, focused on identities for users, this chapter focused on identities for pods and applications running in pods. You learned about managed identities in Azure and how you can use Azure AD pod-managed identities in Azure to assign those managed identities to pods.

You created a new cluster with the Azure AD pod-managed identities add-on enabled. You then created a new managed identity and linked that to your cluster. In the final section, you gave this identity permissions over a blob storage account and finally verified that pods with the managed identity were able to log in to Azure and download files, but pods without the managed identity couldn't log in to Azure.

In the next chapter, you'll learn more about Kubernetes secrets. You'll learn about the built-in secrets and then also learn how you can securely connect Kubernetes...