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

CI/CD process for containers and Kubernetes

Before you start building a pipeline, it's good to understand the typical CI/CD process for containers and Kubernetes. In this section, the high-level process shown in Figure 15.1 will be explored in more depth. For a more detailed exploration on CI/CD and DevOps for Kubernetes, you are encouraged to explore the following free online eBook by Microsoft: https://docs.microsoft.com/dotnet/architecture/containerized-lifecycle/.

A representation of the container and Kubernetes CI/CD process

Figure 15.1: Container and Kubernetes CI/CD process

The process starts with somebody making code changes. Code changes could mean application code changes, changes to the Dockerfile used to build the container, or changes to the Kubernetes YAML files used to deploy the application on a cluster.

Once code changes are complete, those changes are committed to a source control system. Typically, this is a Git repository, but other systems, such as Subversion (SVN), also exist. In a Git...