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

Scaling Istio to Multi-Cluster Deployments Across Kubernetes

Containers have changed not only how applications are developed but also how applications connect. Application networking, that is, networking between applications, is critical for production deployments and must be automated, elastically scalable, and secure. Real-world applications are deployed across on-premises, multiple clouds, Kubernetes clusters, and namespaces within clusters. Hence, there is a need to provide a Service Mesh across legacy and modern environments, providing seamless connectivity between applications.

In Chapter 3, we briefly discussed deployment models for Istio control planes. We discussed a single cluster with a local control plane, a primary and remote cluster with a single control plane, and a single cluster with an external control plane. A single-mesh/single-cluster deployment is the simplest but is also a non-practical deployment model because your production workload will include multiple...