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

Understanding Istio security architecture

In Chapter 3, we discussed how the Istio control plane is responsible for the injection of sidecars and establishing trust so that sidecars can communicate with the control plane securely and security policies are eventually enforced by the sidecar. When deployed in Kubernetes, Istio relies on Kubernetes service accounts to identify the roles of workloads in a Service Mesh. The Istio CA watches the Kubernetes API server for the addition/deletion/modification of any service accounts in the namespace with Istio injection enabled. It creates a key and certificates for each service account and, during Pod creation, the certificate and key are mounted onto the sidecar. The Istio CA is responsible for managing the life cycle of the certificates distributed to the sidecars, including the rotation and management of private keys. Using the Secure Production Identity Framework for Everyone (SPIFFE) format identities, Istio provides a strong identity...