Book Image

Learn Docker - Fundamentals of Docker 18.x

By : Dr. Gabriel N. Schenker
Book Image

Learn Docker - Fundamentals of Docker 18.x

By: Dr. Gabriel N. Schenker

Overview of this book

Docker containers have revolutionized the software supply chain in small and big enterprises. Never before has a new technology so rapidly penetrated the top 500 enterprises worldwide. Companies that embrace containers and containerize their traditional mission-critical applications have reported savings of at least 50% in total maintenance cost and a reduction of 90% (or more) of the time required to deploy new versions of those applications. Furthermore they are benefitting from increased security just by using containers as opposed to running applications outside containers. This book starts from scratch, introducing you to Docker fundamentals and setting up an environment to work with it. Then we delve into concepts such as Docker containers, Docker images, Docker Compose, and so on. We will also cover the concepts of deployment, orchestration, networking, and security. Furthermore, we explain Docker functionalities on public clouds such as AWS. By the end of this book, you will have hands-on experience working with Docker containers and orchestrators such as SwarmKit and Kubernetes.
Table of Contents (21 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

A short peek into Google’s container offerings


Google is the inventor of Kubernetes and, to this date, the driving force behind it. One would thus expect that Google has a compelling offering around hosted Kubernetes. Let's have a peek into it. To continue, you need to either have an existing account with Google Cloud or you can create a test account here at https://console.cloud.google.com/freetrial. Proceed with the following steps:

  1. In the main menu, select Kubernetes Engine. The first time you do that, it will take a few moments until the Kubernetes engine is initialized.
  2. Once this is ready, we can create a cluster by clicking on CREATE CLUSTER.
  3. Name the cluster as pets-cluster and leave all other settings in the Create a Kubernetes Cluster form with their default values and click on Create.

It will again take a few moments to provision the cluster for us. Once the cluster has been created, we can open the Cloud Shell. This should look similar to the following screenshot:

First Kubernetes...