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

Cleaning up

Just follow these simple steps:

  1. We will change the mode from mode: REGISTRY_ONLY to mode: ALLOW_ANY for the purpose of the next chapter's lab exercises:
$ kubectl -n istio-system get cm istio -o yaml | sed 's/mode: REGISTRY_ONLY/mode: ALLOW_ANY/g' | kubectl replace -n istio-system -f -
configmap/istio replaced
  1. Double-check whether mode: ALLOW_ANY has been set:
$ kubectl -n istio-system get cm istio -o yaml | grep -m 1 -o "mode: ALLOW_ANY"
mode: ALLOW_ANY
  1. We will delete the virtual services for httpbin as we will recreate them in the next chapter:
$ kubectl -n istio-lab delete -f 22-create-httpbin-virtual-service.yaml
virtualservice.networking.istio.io "httpbin" deleted

With this, we have made changes in our setup so that we can show Istio's security features in the next chapter.

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