Book Image

Bootstrapping Service Mesh Implementations with Istio

By : Anand Rai
4 (1)
Book Image

Bootstrapping Service Mesh Implementations with Istio

4 (1)
By: Anand Rai

Overview of this book

Istio is a game-changer in managing connectivity and operational efficiency of microservices, but implementing and using it in applications can be challenging. This book will help you overcome these challenges and gain insights into Istio's features and functionality layer by layer with the help of easy-to-follow examples. It will let you focus on implementing and deploying Istio on the cloud and in production environments instead of dealing with the complexity of demo apps.  You'll learn the installation, architecture, and components of Istio Service Mesh, perform multi-cluster installation, and integrate legacy workloads deployed on virtual machines. As you advance, you'll understand how to secure microservices from threats, perform multi-cluster deployments on Kubernetes, use load balancing, monitor application traffic, implement service discovery and management, and much more. You’ll also explore other Service Mesh technologies such as Linkerd, Consul, Kuma, and Gloo Mesh. In addition to observing and operating Istio using Kiali, Prometheus, Grafana and Jaeger, you'll perform zero-trust security and reliable communication between distributed applications. After reading this book, you'll be equipped with the practical knowledge and skills needed to use and operate Istio effectively.
Table of Contents (19 chapters)
1
Part 1: The Fundamentals
5
Part 2: Istio in Practice
10
Part 3: Scaling, Extending,and Optimizing

Summary

In this chapter, we read about how Istio provides authentication and authorization. We also read about how to implement service-to-service authentication using mutual TLS within a Service Mesh using the PeerAuthentication policy, as well as mutual TLS with clients external to a Service Mesh by using the mutual TLS mode at the Ingress gateway. We then read about end user authentication using the RequestAuthentication policy. We configured Auth0 to gain some real-life experience in using authentication and identity providers.

To finish off, we then read about AuthorizationPolicy and how it can be used to enforce various authorization checks to ensure that the authenticated identity is authorized to access the requested resources.

In the next chapter, we will read about how Istio helps in making microservices observable and how various observability tools and software can be integrated with Istio.