Book Image

Hands-On Kubernetes on Azure - Second Edition

By : Nills Franssens, Shivakumar Gopalakrishnan, Gunther Lenz
Book Image

Hands-On Kubernetes on Azure - Second Edition

By: Nills Franssens, Shivakumar Gopalakrishnan, Gunther Lenz

Overview of this book

From managing versioning efficiently to improving security and portability, technologies such as Kubernetes and Docker have greatly helped cloud deployments and application development. Starting with an introduction to Docker, Kubernetes, and Azure Kubernetes Service (AKS), this book will guide you through deploying an AKS cluster in different ways. You’ll then explore the Azure portal 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 application and cluster. As you advance, you'll understand how to overcome common challenges in AKS and secure your application with HTTPS and Azure AD (Active Directory). Finally, you’ll explore serverless functions such as HTTP triggered Azure functions and queue triggered functions. By the end of this Kubernetes book, you’ll be well-versed with the fundamentals of Azure Kubernetes Service and be able to deploy containerized workloads on Microsoft Azure with minimal management overhead.
Table of Contents (16 chapters)
1
Section 1: The Basics
4
Section 2: Deploying on AKS
10
Section 3: Leveraging advanced Azure PaaS services
15
Index

Deploying the sample guestbook application

In this chapter, you will deploy the classic guestbook sample Kubernetes application. You will be mostly following the steps from https://Kubernetes.io/docs/tutorials/stateless-application/guestbook/ with some modifications. You will employ these modifications to show additional concepts, such as ConfigMaps, that are not present in the original sample.

The sample guestbook application is a simple, multi-tier web application. The different tiers in this application will have multiple instances. This is beneficial for both high availability and for scale. The guestbook's front end is a stateless application because the front end doesn't store any state. The Redis cluster in the back end is stateful as it stores all the guestbook entries.

You will be using this application as the basis for testing out the scaling of the back end and the front end, independently, in the next chapter.

Before we get started, let's consider...