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

Istio architecture

Now that we have installed Istio, enabled it for the BookInfo application, and also analyzed it’s operations, it is time to simplify what we have seen so far with a diagram. The following figure is a representation of Istio architecture.

Figure 2.12 – Istio architecture

Figure 2.12 – Istio architecture

The Istio Service Mesh comprises a data plane and a control plane. The example we followed in this chapter installs both of them on one node. In a production or non-production environment, the Istio control plane will be installed on its own separate set of nodes. The control plane comprises istiod components as well as a few other Kubernetes configs, which, altogether, are responsible for managing and providing service discovery to the data plane, propagation of configuration related to security and traffic management, as well as providing and managing identity and certificates to data plane components.

The data plane is another part of the Service Mesh...