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

Managing Ingress traffic using the Kubernetes Ingress resource

When building applications that need to be consumed by other applications from outside the network boundary in which the application is deployed, you will need to build an Ingress point using which the consumers can reach the application. In Kubernetes, a Service is an abstraction through which a set of Pods are exposed as a network service. When these services need to be consumed by other applications, they need to be made externally accessible. Kubernetes supports ClusterIP for consuming services internally from within the cluster, NodePort for consuming the service outside the cluster but within the network, LoadBalancer for consuming the services externally via the cloud load balancer, and there are also options for exposing an internal-facing load balancer for internal traffic outside of the Kubernetes cluster. In this section, we will read about how we can configure Istio to expose a service using the Kubernetes Ingress...