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


In this chapter, we read about how Istio makes systems observable by generating various telemetry data. Istio provides various metrics that can then be used by Istio operators to fine-tune and optimize a system. This is all achieved by Envoy, which generates various metrics that are then scraped by Prometheus.

Istio allows you to configure new metrics as well as add new dimensions to existing metrics. You learned how to use Prometheus to query various metrics using PromQL and build queries that can provide insight into your system, as well as business operations. We later installed Grafana to visualize the metrics collected by Prometheus, even though there are a number of out-of-the-box dashboards provided for Istio, and you can easily add new dashboards, configure alerts, and create policies on how these alerts should be distributed.

Finally, we installed Jaeger to perform distributed tracing to understand how a request is processed in a distributed system, and we did...