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

Exploring the components of a control plane

The following diagram summarizes the Istio architecture along with the interaction between various components. We used the Ingress gateway and istio-proxy in the previous chapter so we will not go into further details on those here. We will, however, unravel some of the other components of the Istio control plane not directly depicted in the following illustration.

Figure 3.1 – Istio control plane

Figure 3.1 – Istio control plane

Before we delve into the components of the control plane, let’s first get the definition of the term out of the way – the control plane is a set of Istio services that are responsible for the operations of the Istio data plane. There is no single component that constitutes the control plane – rather, there are several.

Let’s look at the first component of the Istio control plane called istiod.

istiod

istiod is one of the Istio control plane components, providing service discovery...