Book Image

Docker Bootcamp

By : Russ McKendrick, Pethuru Raj, Jeeva S. Chelladhurai, Vinod Singh
Book Image

Docker Bootcamp

By: Russ McKendrick, Pethuru Raj, Jeeva S. Chelladhurai, Vinod Singh

Overview of this book

<p>Docker allows you to create a robust and resilient environment to generate portable, composable, scalable, and stable application containers.</p> <p>The book starts by installing the core Docker Engine on MacOS, Windows 10 and Linux desktops. We will then define multi-container applications and understand the advantages of using containers locally. Once this is done, we will deploy containers on a single Docker host which is publicly accessible. Furthermore, we will learn how to deploy and configure a Docker Swarm cluster and explore networking and storage third-party plugins to extend the core Docker functionality. Towards the end, the book will demonstrate how to monitor and troubleshoot day-to-day problems in addition to various real world examples of container deployments.</p>

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Table of Contents (15 chapters)
Docker Bootcamp
Docker Bootcamp
Credits
Credits
About the Authors
About the Authors
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Customer Feedback
Customer Feedback
Preface
Preface
Free Chapter
1
Installing Docker Locally
Installing Docker Locally
Docker for Mac and Windows
Docker on Ubuntu 16.04
Testing your installation
Summary
2
Launching Applications Using Docker
Launching Applications Using Docker
Docker terminology
Controlling Docker containers
Running a WordPress container
Docker Compose
Docker Build
A quick overview of the Dockerfile's syntax
The Dockerfile build instructions
Customizing existing images
Sharing your images
Summary
3
Docker in the Cloud
Docker in the Cloud
Docker Machine
The Digital Ocean driver
The Amazon Web Services driver
The Microsoft Azure driver
References
Summary
4
Docker Swarm
Docker Swarm
Creating a Swarm manually
Launching a service
Launching a stack
Docker for Amazon Web Services
Docker for Azure
Summary
5
Docker Plugins
Docker Plugins
REX-Ray volume plugin
WeaveNetwork Plugin
Summary
6
Troubleshooting and Monitoring
Troubleshooting and Monitoring
Troubleshooting containers
Debugging a Dockerfile
Monitoring containers
Summary
7
Putting It All Together
Putting It All Together
Workflows
Describing containers
Describing Docker
Virtual Machines versus containers
The Docker use cases
Summary
Index
Index

REX-Ray volume plugin

So far, we have been usingthe local storage which is available on our hosts, as mentioned in Chapter 4, Docker Swarm that isn't very useful when you potentially have move the storage between multiple hosts either because you are hosting a cluster or because of problems with the host machine itself.

In this example, we are going to be launching a Docker instance in Amazon Web Services, install a volume plugin called REX-Ray, written by EMC, and then launch our WordPress example but this time we will attach AmazonElastic Block Storage volumes to our containers. Once configured, we will move our containers to a second host machine to demonstrate that the data has persisted.

REX-Ray supports several storage types on both public clouds and EMC's own range, as follows:

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