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

Control plane network security

In this section, you will explore two ways in which to protect the control plane of your AKS cluster: Authorized IP ranges and private clusters. You'll start by updating your existing cluster to use authorized IP ranges.

Securing the control plane using authorized IP ranges

Configuring authorized IP ranges on AKS will limit which public IP addresses can access the control plane of your AKS cluster. In this section, you will configure authorized IP ranges on your existing cluster. You will limit traffic to a random public IP address to verify that traffic blocking works. You will then configure the IP address from the Azure Cloud Shell to be authorized and will see how that then allows traffic.

  1. To start, browse to the Azure portal and open the pane for your AKS cluster. Select Networking in the left-hand navigation. Then, select the checkbox next to Set authorized IP ranges, and fill in the IP address, 10.0.0.0, in the box below, as...