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Docker for Windows Docker for Windows has the following system requirements; if your machine does not meet them then Docker for Windows will inform you before exiting: You must be running a 64bit Windows 10 Pro, Enterprise and Education (1511 November update, build 10586 or later) installation or later (there are plans to support other versions in the future) Hyper-V must be enabled, though the installer will enable it for you if needed You must have at least 4GB of RAM Downloading Docker for Windows Docker for Windows is available from the following URL: Like Docker for Mac, I would recommend sticking with the Stable channel.

Once this is done, we will deploy containers on a single Docker host which is publicly accessible.

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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.

Before we start our installation, I would like to take a moment to quickly talk about the version of Docker which we will be installing.

At the time of writing, Docker 17.03 has just been released and like most updates, introduces new features as well as changes to existing features.

This book has been written with this version of Docker so some of the commands listed may not work or have the same effect when using older versions.

If you already have Docker installed, I would recommend that you check that you are running Docker 17.03 by running the following command: docker version.

Note The Windows Subsystem for Linux exposes an Ubuntu shell which allows you to run native Linux command-line tools on your Windows installation; for more information, please see.

So how does Docker for Mac and Windows work The latest versions of macOS and Windows 10 Professional ship with hypervisors which are built into the operating systems kernel, macOS has Hypervisor framework.

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Note Hypervisor framework allows developers to build applications without the need to install third-party kernel extensions, meaning they can leverage full hardware virtualization but remain purely in user space meaning that virtual machines remain sandboxed as if they were running as a native application.

The following URL gives a technical overview: For Docker for Mac Docker have built their own open source framework which works with the Hypervisor framework called HyperKit: you can find out more about HyperKit at.

Hyper-V has been the native hypervisor for Windows-based operating systems since Windows Server 2008; it has also been part of the desktop version of Windows since Windows 8 (Professional and Enterprise editions), it allows users and developers to launch Windows and Linux virtual machines with hardware virtualization in a sandboxed environment.

Docker for Mac and Windows uses these native virtualisation technologies to launch a virtual machine running their MobyLinux distribution, MobyLinux is a light-weight distribution based on Alpine Linux whos only function is to run Docker.

Note The ISO for Alpine Linux currently weighs in at 26 MB, and a fully functioning minimal installation requires a footprint of 130MB, while the distribution is extremely small it is as useable and secure as more common Linux distributions.

Docker for Mac and Windows takes care of launching, configuring, and maintaining the virtual machine as well as functions such as networking and mounting filesystems from your local machine to a MobyLinux virtual machine.

Docker for Mac Docker for Mac has the following system requirements; if your machine does not meet them then Docker for Mac will fail to install: Your Mac must be a 2010 or later model, with support for Intels hardware support for memory man.

Versions of VirtualBox 4.3.30 or lower must NOT be installed as this causes problems with Docker for Mac.

To check that your machine can support Docker for Mac you can run the following command: sysctl kern.hvsupport.

Downloading Docker for Mac Docker for Mac is available from the following URL: I would recommend sticking with the Stable channel for now as this is the version we will be installing on remote machines in later chapters.

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Clicking on Get Docker for Mac (stable) will kick off a download of a disk image (DMG) file, once downloaded double-click on the file to mount it.

Installing Docker for Mac Like most macOS apps, all you have to do is the following: Drag the Docker application from the mounted disc image to your applications folder; opening the mounted image in the macOS finder by double clicking on it makes this task easy, as you can see from the following screenshot: Once the application has been copied, you can close the finder window and open your Applications, find Docker, and open it: When you open Docker for the first time you will be walked through the initial installation: Clicking Next will tell you that Docker will ask for your password, it needs this to complete the installation.

You can tell that Docker has started as the small boxes on the whales back in the icon will stop animating; also left-clicking over the icon will bring up a menu which shows the status of your Docker installation: Selecting About Docker from the menu will open the following window: Running the following command in a terminal shows additional information about your Docker installation: docker version You should see something like the following output: As you can see, it gives details on the Docker client which is installed on your macOS host and the MobyLinux virtual machine the client is connecting to.

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