Book Image

Docker Certified Associate (DCA): Exam Guide

By : Francisco Javier Ramírez Urea
Book Image

Docker Certified Associate (DCA): Exam Guide

By: Francisco Javier Ramírez Urea

Overview of this book

Developers have changed their deployment artifacts from application binaries to container images, and they now need to build container-based applications as containers are part of their new development workflow. This Docker book is designed to help you learn about the management and administrative tasks of the Containers as a Service (CaaS) platform. The book starts by getting you up and running with the key concepts of containers and microservices. You'll then cover different orchestration strategies and environments, along with exploring the Docker Enterprise platform. As you advance, the book will show you how to deploy secure, production-ready, container-based applications in Docker Enterprise environments. Later, you'll delve into each Docker Enterprise component and learn all about CaaS management. Throughout the book, you'll encounter important exam-specific topics, along with sample questions and detailed answers that will help you prepare effectively for the exam. By the end of this Docker containers book, you'll have learned how to efficiently deploy and manage container-based environments in production, and you will have the skills and knowledge you need to pass the DCA exam.
Table of Contents (22 chapters)
1
Section 1 - Key Container Concepts
8
Section 2 - Container Orchestration
12
Section 3 - Docker Enterprise
17
Section 4 - Preparing for the Docker Certified Associate Exam
Introduction to Orchestration

In this chapter, we will talk about orchestration concepts that can be applied to container environments. We will learn why we need orchestration to deploy applications based on container components on a pool of nodes. Orchestrators provide new features to an environment but they also introduce new management challenges. We will also look at new definitions so that we can provide Docker Engine features in a distributed orchestrated environment. This chapter will introduce important concepts that will help you understand the Swarm and Kubernetes orchestrators.

We will learn about orchestration as a concept and we will also introduce some interesting topics, such as the importance of orchestration in distributed and dynamic environments, and the fact that it allows us to easily scale up and down and update application components. We will also learn...