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)
Part 1: The Fundamentals
Part 2: Istio in Practice
Part 3: Scaling, Extending,and Optimizing


This chapter was very hands-on, but we hope you learned how to set up Istio in various cluster configurations. Every section used two clusters as an example to demonstrate the setup, but we would recommend that you extend each of the examples by adding more clusters. Practice various scenarios by deploying an Envoy dummy application and curl Pod from the utilities namespace and then applying virtual and destination rules and testing the behavior of the services in a multi-cluster environment. Practice east-west traffic scenarios by configuring the east-west gateway to only be accessible cross-cluster and see how that plays out using the instructions in this chapter.

Although we discussed four deployment options, choosing the right deployment model depends on specific use cases, and you should consider your underlying infrastructure provider, application isolation, network boundaries, and service-level agreement requirements to consider which architecture is the best fit...