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

Installing Consul in Kubernetes

Consul can run in each Kubernetes cluster as a server, a client, or both. If a data center has combinations of applications in VMs and in Kubernetes, it is possible to place Consul servers in a VM as well as in the Kubernetes environment. Similarly, the Consul agent should run on every VM and on each Kubernetes node as a daemon set. Consul forms a cluster automatically in a heterogeneous environment consisting of bare-metal machines, VMs, and Kubernetes.

To install Consul in Kubernetes, we'll need persistent volumes so that Consul can store cluster data in its key/value store. Let's create these first.

Creating persistent volumes

The following steps are a prerequisite to creating...