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

Multi-primary on different networks

The control plane has high availability in a multi-primary setup. In the architecture options discussed in the previous sections, we had one primary cluster and the rest of the clusters didn’t use istiod, risking a loss of control if the primary control plane suffers an outage due to unforeseen circumstances. In a multi-primary cluster, we have multiple primary control planes providing uninterrupted access to the mesh even if one of the control planes suffers a temporary outage.

Figure 8.5 – Primary-primary on separate networks

Figure 8.5 – Primary-primary on separate networks

We will start by first setting up the clusters, followed by establishing trust between the two clusters. Perform the following steps to establish a multi-primary cluster:

  1. Set up the two clusters as per the initial set of steps in the Setting up Kubernetes clusters section. This will complete the creation of the cluster as well as setting up the context variables. Because...