Book Image

Azure for Architects - Third Edition

By : Ritesh Modi, Jack Lee, Rithin Skaria
Book Image

Azure for Architects - Third Edition

By: Ritesh Modi, Jack Lee, Rithin Skaria

Overview of this book

Thanks to its support for high availability, scalability, security, performance, and disaster recovery, Azure has been widely adopted to create and deploy different types of application with ease. Updated for the latest developments, this third edition of Azure for Architects helps you get to grips with the core concepts of designing serverless architecture, including containers, Kubernetes deployments, and big data solutions. You'll learn how to architect solutions such as serverless functions, you'll discover deployment patterns for containers and Kubernetes, and you'll explore large-scale big data processing using Spark and Databricks. As you advance, you'll implement DevOps using Azure DevOps, work with intelligent solutions using Azure Cognitive Services, and integrate security, high availability, and scalability into each solution. Finally, you'll delve into Azure security concepts such as OAuth, OpenConnect, and managed identities. By the end of this book, you'll have gained the confidence to design intelligent Azure solutions based on containers and serverless functions.
Table of Contents (21 chapters)
20
Index

Virtual kubelet

Virtual kubelet is currently in preview and is managed by the CNCF organization. It is quite an innovative approach that AKS uses for scalability purposes. Virtual kubelet is deployed on the Kubernetes cluster as a Pod. The container running within the Pod uses the Kubernetes SDK to create a new node resource and represents itself to the entire cluster as a node. The cluster components, including the API server, scheduler, and controllers, think of it and treat it as a node and schedule Pods on it.

However, when a Pod is scheduled on this node that is masquerading as a node, it communicates to its backend components, known as providers, to create, delete, and update the Pods. One of the main providers on Azure is Azure Container Instances. Azure Batch can also be used as a provider. This means the containers are actually created on Container Instances or Azure Batch rather than on the cluster itself; however, they are managed by the cluster. The architecture of virtual...