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

3. Application deployment on AKS

In this chapter, you will deploy two applications on Azure Kubernetes Service (AKS). An application consists of multiple parts, and you will build the applications one step at a time while the conceptual model behind them is explained. You will be able to easily adapt the steps in this chapter to deploy any other application on AKS.

To deploy the applications and make changes to them, you will be using YAML files. YAML is a recursive acronym for YAML Ain't Markup Language. YAML is a language that is used to create configuration files to deploy to Kubernetes. Although you can use either JSON or YAML files to deploy applications to Kubernetes, YAML is the most commonly used language to do so. YAML became popular because it is easier for a human to read when compared to JSON or XML. You will see multiple examples of YAML files throughout this chapter and throughout the book.

During the deployment of the sample guestbook application...