Book Image

Migrating Applications to the Cloud with Azure

By : Sjoukje Zaal, Amit Malik, Sander Rossel, Jason Marston, Mohamed Waly, Stefano Demiliani
Book Image

Migrating Applications to the Cloud with Azure

By: Sjoukje Zaal, Amit Malik, Sander Rossel, Jason Marston, Mohamed Waly, Stefano Demiliani

Overview of this book

Whether you are trying to re-architect a legacy app or build a cloud-ready app from scratch, using the Azure ecosystem with .NET and Java technologies helps you to strategize and plan your app modernization process effectively. With this book, you’ll learn how to modernize your applications by using Azure for containerization, DevOps, microservices, and serverless solutions to reduce development time and costs, while also making your applications robust, secure, and scalable. You will delve into improving application efficiency by using container services such as Azure Container Service, Azure Kubernetes Service (AKS), and more. Next, you will learn to modernize your application by implementing DevOps throughout your application development life cycle. You will then focus on increasing the scalability and performance of your overall application with microservices, before learning how to add extra functionality to your application with Azure serverless solutions. Finally, you’ll get up to speed with monitoring and troubleshooting techniques. By the end of this book, you will have learned how to use the Azure ecosystem to refactor, re-architect, and rebuild your web, mobile, and desktop applications.
Table of Contents (22 chapters)
Free Chapter
1
Planning Application Modernization
4
Implementing Containerization and DevOps in a Development Cycle
8
Building a Web and Microservices Architecture on Azure
12
Going Serverless and Deploying to the Cloud
17
Planning for Security, Availability, and Monitoring

Scaling the AKS cluster

In the previous section, we configured our Azure voting application so that it can autoscale based on utilization. However, we didn't consider the underlying capacity of Kubernetes nodes. To ensure that our application scales well when necessary, we also need to make sure we've got enough capacity available on our Kubernetes nodes to be able to run the required pods. 

Similar to scaling applications, AKS also allows you to scale manually or configure autoscaling.

Scaling an AKS cluster manually

A single Azure CLI command or a couple of clicks in the Azure portal can increase or decrease the number of Kubernetes nodes in your AKS cluster. While scaling the cluster, you should keep...