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

Implementing distributed tracing

Distributed tracing helps you understand the journey of a request through various IT systems. In the context of microservices, distributed tracing helps you understand the flow of requests through various microservices, helps you to diagnose any issues a request might be encountering, and helps you quickly diagnose any failure or performance issues.

In Istio, you can enable distributed tracing without needing to make any changes in application code, provided your application forwards all tracing headers to upstream services. Istio supports integrations with various distributed tracing systems; Jaeger is one such supported system, which is also provided as an add-on with Istio. Istio distributed tracing is built upon Envoy, where tracing information is sent directly to the tracing backend from Envoy. The tracing information comprises x-request-id, x-b3-trace-id, x-b3-span-id, x-b3-parent-spanid, x-b3-sampled, x-b3-flags, and b3. These custom headers...