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

Managing Application Traffic

Microservices architecture creates a sprawl of loosely coupled applications deployed as containers on platforms such as Kubernetes. With the loose coupling of applications, inter-service traffic management becomes complex. If exposed insecurely to external systems, it can cause exposure of sensitive data, making your system vulnerable to external threats. Istio provides various mechanisms to secure and govern the following kinds of application traffic:

  • Ingress traffic coming to your application from outside
  • Inter-mesh traffic generated between various components of the application
  • Egress traffic going out from your application to other applications outside the mesh

In this chapter, we will read about and practice managing application traffic by going through the following topics in detail.

  • Managing Ingress traffic using the Kubernetes Ingress resource and an Istio Gateway
  • Traffic routing and canary release
  • Traffic...