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

Service Mesh Observability

Distributed systems built using microservice architecture are complex and unpredictable. Irrespective of how diligent you have been in writing code, failures, meltdowns, memory leaks, and so on are highly likely to happen. The best strategy to handle such an incident is to proactively observe systems to identify any failures or situations that might lead to failures or any other adverse behavior.

Observing systems help you understand system behavior and the underlying causes behind faults so that you can confidently troubleshoot issues and analyze the effects of potential fixes. In this chapter, you will read about why observability is important, how to collect telemetry information from Istio, the different types of metrics available and how to fetch them via APIs, and how to enable distributed tracing. We will do so by discussing the following topics:

  • Understanding observability
  • Metric scraping using Prometheus
  • Customizing Istio metrics...