Book Image

Learn Docker - Fundamentals of Docker 19.x - Second Edition

By : Dr. Gabriel N. Schenker
Book Image

Learn Docker - Fundamentals of Docker 19.x - Second Edition

By: Dr. Gabriel N. Schenker

Overview of this book

Containers enable you to package an application with all the components it needs, such as libraries and other dependencies, and ship it as one package. Docker containers have revolutionized the software supply chain in both small and large enterprises. Starting with an introduction to Docker fundamentals and setting up an environment to work with it, you’ll delve into concepts such as Docker containers, Docker images, and Docker Compose. As you progress, the book will help you explore deployment, orchestration, networking, and security. Finally, you’ll get to grips with Docker functionalities on public clouds such as Amazon Web Services (AWS), Azure, and Google Cloud Platform (GCP), and learn about Docker Enterprise Edition features. Additionally, you’ll also discover the benefits of increased security with the use of containers. By the end of this Docker book, you’ll be able to build, ship, and run a containerized, highly distributed application on Docker Swarm or Kubernetes, running on-premises or in the cloud.
Table of Contents (25 chapters)
1
Section 1: Motivation and Getting Started
4
Section 2: Containerization, from Beginner to Black Belt
11
Section 3: Orchestration Fundamentals and Docker Swarm
18
Section 4: Docker, Kubernetes, and the Cloud

Questions

To assess your learning progress, please answer the following questions:

  1. You have an application consisting of two services, the first one being a web API and the second one being a DB, such as Mongo DB. You want to deploy this application into a Kubernetes cluster. In a few short sentences, explain how you would proceed.
  2. Describe in your own words what components you need in order to establish layer 7 (or application level) routing for your application. 
  3. List the main steps needed to implement a blue-green deployment for a simple application service. Avoid going into too much detail.
  4. Name three or four types of information that you would provide to an application service through Kubernetes secrets.
  5. Name the sources that Kubernetes accepts when creating a secret.