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

Deployment models for the Istio control plane

In the previous chapters, we installed Istio on minikube, which is one local cluster meant for development purposes on your local workstation. When deploying Istio in enterprise environments, the deployment will be not on minikube but rather on an enterprise-grade Kubernetes cluster. The Service Mesh might run on one Kubernetes cluster or be spread across multiple Kubernetes clusters. It might also be the case that all services will be on one network or may be on different networks with no direct connectivity between them. Every organization will have a different network and infrastructure disposition, and the deployment model for Istio will change accordingly.

What is a cluster?

There are many definitions of a cluster depending on what context they are being referred to. In this section, when we say cluster, we are basically referring to a set of compute nodes hosting containerized applications interconnected with each other. You...