Book Image

Mastering Service Mesh

By : Anjali Khatri, Vikram Khatri
Book Image

Mastering Service Mesh

By: Anjali Khatri, Vikram Khatri

Overview of this book

Although microservices-based applications support DevOps and continuous delivery, they can also add to the complexity of testing and observability. The implementation of a service mesh architecture, however, allows you to secure, manage, and scale your microservices more efficiently. With the help of practical examples, this book demonstrates how to install, configure, and deploy an efficient service mesh for microservices in a Kubernetes environment. You'll get started with a hands-on introduction to the concepts of cloud-native application management and service mesh architecture, before learning how to build your own Kubernetes environment. While exploring later chapters, you'll get to grips with the three major service mesh providers: Istio, Linkerd, and Consul. You'll be able to identify their specific functionalities, from traffic management, security, and certificate authority through to sidecar injections and observability. By the end of this book, you will have developed the skills you need to effectively manage modern microservices-based applications.
Table of Contents (31 chapters)
1
Section 1: Cloud-Native Application Management
4
Section 2: Architecture
8
Section 3: Building a Kubernetes Environment
10
Section 4: Learning about Istio through Examples
18
Section 5: Learning about Linkerd through Examples
24
Section 6: Learning about Consul through Examples

Traffic management in Consul

Consul's native traffic management features are implemented for both cloud-native as well as traditional VM applications. We will go through the features of traffic shifting and traffic routing in this section.

Directing traffic to a default subset

Consul's traffic shifting feature allows us to direct traffic to a default subset. Follow these steps to learn how to do so:

  1. The web node port is 30145. Run curl -s http://localhost:30145 and check the output:
$ curl -s http://localhost:30145
===============================================
Request time : 2019-09-21 01:25:29.844609478 +0000 UTC
Requested path : /
Host IP : 192.168.142.101
Pod IP : 192.168.230.202
Pod Name ...