Docker is not supported on bit architecture. To check the architecture on your system, run the following command:.
For Ubuntu, the default storage backend or driver is overlay2, which has been available since Ubuntu Another popular one is DeviceMapper, which uses the device-mapper thin provisioning module to implement layers. It should be installed by default on a majority of Linux platforms.
To check for device-mapper , you can run the following command:. Docker requires that the host system meets a basic set of requirements in order for it to run correctly. By running the preceding commands, we were able to confirm that our system meets those requirements. There are a few different versions of Ubuntu that are available.
In this recipe, we will be installing Docker on Ubuntu These same steps should also work with Ubuntu Uninstall any older versions of Docker.
Previous versions of the Docker package are called docker , docker. If these are installed, then we need to uninstall them, or else they might cause problems:. Here are some basic operations:. Go through the following easy recipe to install Docker on CentOS 7. The centos-extra repository must be enabled.
This is usually enabled by default, but if you disabled it, please enable it again. Previously, the Docker package had a different name: It was called docker or docker-engine ; it is now called docker-ce. We will need to remove any previous Docker versions in order to prevent any conflicts:. In the previous two recipes, we went through the different steps required to install Docker on Ubuntu and CentOS. Those steps are fine when you are only installing it on a host or two, but what if you need to install it on a hundred?
In that case, you would want something a little more automated to speed up the process. This recipe shows you how to install Docker on different Linux flavors using an install script that is provided by Docker. Like all scripts that you download off the internet, the first thing you should do is examine the script and make sure you know what it is doing before you use it.
To do this, go through the following steps:. In order to upgrade Docker, you will need to use the package manager on your host.
Rerunning the script can cause issues if it attempts to re-add repositories that were already added. See the previous recipes to learn how to upgrade Docker on CentOS and Ubuntu using their respective package managers.
Docker for Windows is a native application that is deeply integrated with Hyper-V virtualization and the Windows networking and filesystems. It is a full-featured development environment that can be used for building, debugging, and testing Docker apps on a Windows PC.
It also works well with VPNs and proxies to make it easier when used in a corporate environment. Docker for Windows supports both Windows and Linux containers out of the box, and it is easy to switch between the two to build your multiplatform applications. Recent releases have also added Kubernetes support so that you can easily create a full Kubernetes environment on your machine with just the click of a button.
Once the installation is complete, it will automatically start up. You will notice a little whale icon in the notification area of your task bar. If you need to change any settings, right-click on the icon and select Settings.
This recipe will show you how to install a Docker development environment on your Windows machine. Now that you have Docker for Windows installed, check out the following tips to get the most out of your installation:.
To switch back, do the same thing, except this time, select Switch to Linux containers Docker for Mac is the fastest and most reliable way to run Docker on a Mac. It installs all of the tools required to set up a complete Docker development environment on your Mac.
The preceding recipe will download and install a Docker development environment on your Mac. Now that you have Docker for Mac installed, here are a few more tips for getting started:. Visit the Get Started with Docker for Mac guide to help you learn about the application and how best to use it.
I am borrowing the following recipe from the next chapter to introduce some concepts. Don't worry if the recipe doesn't explain everything; we'll cover the topics in detail later in this chapter, or in the next few chapters.
For now, let's pull an image and run it. We'll also get familiar with Docker architecture and its components in this recipe. Docker has client—server architecture. Its binary consists of the Docker client and server daemon, and can reside on the same host. The Docker daemon builds, runs, and distributes containers. As shown in the following diagram, the Docker client sends the command to the Docker daemon running on the host machine.
The Docker daemon also connects to either a public or a local registry to get images requested by the client:. So in our case, the Docker client sends a request to the daemon running on the local system, which then connects to the public Docker registry and downloads the image. Once it is downloaded, we can run it.
Layers are transparently laid on top of the base image to create a single coherent filesystem. For ease of use, we can allow a nonroot user to administer Docker by adding it to a Docker group.
This is not required when using Docker on Mac or Windows. The preceding command will add a user to the Docker group. The added user will thus be able to perform all Docker operations.
Docker commands are well documented, and can be referred to whenever needed. Lots of documentation is available online as well, but it might differ from the documentation for the Docker version you are running.
The man command uses the man pages installed by the Docker package to provide help. Ken Cochrane is an IT professional with over 15 years of experience working with organizations to build large-scale applications and platforms.
As an early team member, he worked on everything from the Docker Engine to documentation. Ken currently works for WEX, a global payments company, where he leads a team and helps modernize their technology stack by moving to the cloud and automating their development pipeline using containers.
His Twitter handle is kencochrane. White PDF Download. Young, Bruce R. Munson, Theodore H. Okiishi, Wade W. Huebsch PDF Download. Miller Jr. PDF Download. A Canticle for Leibowitz by Walter M. Parker PDF Download. Weitz PDF Download. Ray PDF Download. Williams PDF Download. Schulz PDF Download. Martin PDF Download. Pratt, Dennis P. Wood, Brian M. Alman PDF Download. Hertlein PDF Download. Kouzes, Barry Z. Volkovyskii, G. Lunts, I. Provide Record Navigation Buttons on a Form 2. Using optional parameters 2.
Creating pop-up forms 2. Initializing pop-up forms 2. Programmatically accessing online help 2. Miscellaneous comments 2. Store the Sizes and Locations of Forms 2. Open Multiple Instances of a Form 2. Discussion 3. Reports 3. Create a Report with Line Numbers 3. Problem 3. Solution 3.
Print the Value of a Parameter on a Report 3. Create a Report with Multiple Columns 3. See Also 3. Create a Simple Bar Graph on a Report 3. Create a Page Total 3. Alternate Gray Bars on My Reports 3. Keep a Report from Breaking at an Inappropriate Place 3. Discussion 4. Applications 4. Problem 4. Solution 4. See Also 4. Build an Object Inventory 4. Documenting all the containers 4. Creating the inventory table 4. Documenting each container 4.
Avoiding errors 4. Comments 4. Creating the temporary tables and query 4. Getting ready to document items 4. Visiting all the objects 4. Recording property information 4. Hide Access Screen Activity 4. Hiding reports in design view 4. Internationalize Text in Your Applications 4. Change and Reset the Access Caption Bar 4. Secure Your Access Database 4. Discussion 5. Printers 5. Problem 5.
Solution 5. Adding items to a list box 5. See Also 5. Programmatically Change Printer Options 5. Programmatically Control the Paper Source 5. Choose an Output Device at Runtime 5. Discussion 6. Data 6. Problem 6.
Solution 6. See Also 6. Find the Median Value for a Field 6. Quickly Find a Record in a Linked Table 6. The MultiSelect property 6. Filling the lboObjects list box 6. The backup process 6. Comments 7. VBA 7. Problem 7. Solution 7. Discussion 7.
Create a Global Procedure Stack 7. Create an Execution Time Profiler 7. Steps 7. Filling a list box by calling the AddItem method 7. Filling a list box by modifying the RowSource property 7. Filling a list box by creating a list-filling callback function 7. Calling the AddItem method 7. Modifying the RowSource property 7. Creating a list-filling callback function 7.
Pass a Variable Number of Parameters to a Procedure 7. Sort an Array in VBA 7. See Also 7. Fill a List Box with a List of Files 7. Handle Object Properties, in General 7.
0コメント