Book Image

Building Enterprise JavaScript Applications

By : Daniel Li
Book Image

Building Enterprise JavaScript Applications

By: Daniel Li

Overview of this book

With the over-abundance of tools in the JavaScript ecosystem, it's easy to feel lost. Build tools, package managers, loaders, bundlers, linters, compilers, transpilers, typecheckers - how do you make sense of it all? In this book, we will build a simple API and React application from scratch. We begin by setting up our development environment using Git, yarn, Babel, and ESLint. Then, we will use Express, Elasticsearch and JSON Web Tokens (JWTs) to build a stateless API service. For the front-end, we will use React, Redux, and Webpack. A central theme in the book is maintaining code quality. As such, we will enforce a Test-Driven Development (TDD) process using Selenium, Cucumber, Mocha, Sinon, and Istanbul. As we progress through the book, the focus will shift towards automation and infrastructure. You will learn to work with Continuous Integration (CI) servers like Jenkins, deploying services inside Docker containers, and run them on Kubernetes. By following this book, you would gain the skills needed to build robust, production-ready applications.
Table of Contents (26 chapters)
Title Page
Copyright and Credits
Packt Upsell
Free Chapter
The Importance of Good Code

Control Planes and components

The components we described previously—scheduler, Discovery Service, Global Configuration Store, and so on—are common to all Cluster Management Tools that exist today. The difference between them is how they package these components and abstract away the details. In Kubernetes, these components are aptly named Kubernetes Components.

We will distinguish between generic "components" with Kubernetes Components by using the capital case for the latter.

In Kubernetes terminology, a "component" is a process that implements some part of the Kubernetes cluster system; examples include the kube-apiserver and kube-scheduler. The sum of all components forms what you think of as the "Kubernetes system", which is formally known as the Control Plane.

Similar to how we categorized the cluster tools into cluster-level tools and node-level tools, Kubernetes categorizes Kubernetes Components into Master Components and Node Components, respectively. Node Components operates within...