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  • Book Overview & Buying Beginning DevOps with Docker
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Beginning DevOps with Docker

Beginning DevOps with Docker

By : Muli
3.9 (7)
Buy this Book
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Beginning DevOps with Docker

Beginning DevOps with Docker

3.9 (7)
By: Muli
Buy this Book

Overview of this book

Making sure that your application runs across different systems as intended is quickly becoming a standard development requirement. With Docker, you can ensure that what you build will behave the way you expect it to, regardless of where it's deployed. By guiding you through Docker from start to finish (from installation, to the Docker Registry, all the way through to working with Docker Swarms), we’ll equip you with the skills you need to migrate your workflow to Docker with complete confidence.
Table of Contents (5 chapters)
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Preface
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Preface
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Hardware
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Software
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Who This Book is for
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Conventions
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Reader Feedback
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Customer Support
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Downloading the Example Code
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Installation
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Errata
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Piracy
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Questions
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1
1. Images and Containers
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1. Images and Containers
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Lesson Objectives
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Virtualization versus Containerization
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How Docker Improves a DevOps Workflow
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Basic Docker Terminal Commands
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Dockerfile Syntax
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Building Images
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Running Containers From Images
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Versioning Images and Docker Hub
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Deploying a Docker Image to Docker Hub
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Summary
2
2. Application Container Management
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2. Application Container Management
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Lesson Objectives
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The docker-compose Tool
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Overview of a Multi-Container Application Setup
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Managing Multiple Containers and Distributed Application Bundles
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Networking with docker-compose
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Summary
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3. Orchestration and Delivery
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3. Orchestration and Delivery
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Lesson Objectives
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Orchestration
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An Overview of Docker Swarm
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Using Docker Engine to Create a Swarm
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Managing Services and Applications in a Swarm
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Scaling Services Up and Down
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Summary
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Index
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Index

Managing Multiple Containers and Distributed Application Bundles

This is the docker-compose.yml for running a Django application. A similar application can be found in the docker-compose documentation under the Django example.

Download the Django example from: ttps://docs.docker.com/compose/django/:

Note

Refer the complete code placed at Code/Lesson-2/django-docker-compose.yml.

Go to https://goo.gl/H624J1 to access the code.

Improve a Docker Workflow

To give more context on how docker-compose is involved and how it improves a Docker workflow.

  1. Create a new directory and name it django_docker.

  2. In the django-docker directory, create a new docker-compose.yml and add the information in the figure above, or in the django-docker-compose.yml script provided.

  3. Create a new Dockerfile and add the content in the Dockerfile script provided.

  4. Create a requirements file; simply copy the django-requirements.txt file provided.

  5. Run docker-compose up and observe the logs.

Notice that we are able to spin up both containers...

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