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

Verifying our installation

Verifying our installation is important to ensure that we have got everything right. To verify the installation of Istio, follow these steps:

  1. First, check the version of istioctl and the different Istio modules:
$ istioctl version --short
client version: 1.3.5
citadel version: 1.3.5
egressgateway version: 1.3.5
galley version: 1.3.5
ingressgateway version: 1.3.5
pilot version: 1.3.5
policy version: 1.3.5
sidecar-injector version: 1.3.5
telemetry version: 1.3.5
  1. The Istio resources are created in the istio-system namespace. Check the status of the Istio pods:
$ kubectl -n istio-system get pods
NAME READY STATUS RESTARTS AGE
grafana-c49f9df64-8q7gm 1/1 Running 0 2m1s
istio-citadel-7f699dc8c8-flwc7 1/1 Running 0 113s
istio-cleanup-secrets-1.3.5-zvppz 0/1 Completed...