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

Primary-remote on the same network

In primary-remote on the same network cluster, the services can access other inter-cluster services because they are on the same network. That means we don’t need an east-west gateway for inter-cluster communication between services. We will make cluster1 the primary cluster and cluster2 the remote cluster. We still need an east-west gateway to proxy istiod services. All control plane-related traffic from cluster 2 to cluster 1 will traverse via the east-west gateway.

Figure 8.4 – Primary remote cluster sharing the same network

Figure 8.4 – Primary remote cluster sharing the same network

Here, we will make use of the infrastructure we set up in the previous section, Primary-remote on multi-network, but if you want, you can also create a separate infrastructure.

Let’s get started!

  1. If you are using the Kubernetes cluster from the previous section, you will need to first uninstall Istio on the remote cluster using the following code block:
    $ istioctl...