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

Creating an application using the MySQL database

You now have a MySQL database. To showcase that you can use this database to configure an application, you will use the WordPress application. You can install this using Helm and provide the connection information to your database in the Helm configuration:

  1. To start, you will need the connection information to your database server. When you installed ASO on your cluster, you configured it to use Key Vault as a secret store rather than Kubernetes secrets. You will need this connection information to connect WordPress to your Azure MySQL database.Search for Key Vaults in the Azure search bar, as shown in Figure 12.27, click on Key vaults, and then select the key vault you created earlier in the chapter:
    Searching for Key Vault using the Azure search bar

    Figure 12.27: Searching for key vaults in the Azure portal

  2. In the resulting pane, click on Secrets in the left-hand navigation and then click on the secret, as shown in Figure 12.28. The name of this secret follows the naming...