How to use Docker on computers without VT support

With the development of technology, Docker container technology has become more and more mature and has become an important part of modern software delivery. However, when installing Docker, some people will encounter a troublesome problem, that is, their computer hardware does not support VT (Virtualization Technology) technology, and thus cannot install Docker. This article will introduce you to some methods to solve this problem, so that computers without VT support can happily use Docker.

1. What is VT technology

VT is Virtualization Technology. It is a hardware virtualization technology launched by Intel in 2005. It can be used in a physical machine Run multiple virtual machines and maintain secure isolation. In the process of using Docker, VT technology allows Docker to better leverage its advantages and improve overall performance and isolation effects.

2. How to check whether the computer supports VT technology

Before installing Docker, we need to check whether our computer supports VT technology. Specifically, we can check it in the following two ways:

1. Check it through BIOS

BIOS is the most basic system firmware on a personal computer and the earliest program that starts automatically when the computer starts. , its main function is to initialize the hardware and start the operating system. Under normal circumstances, we can find out whether VT technology is supported in the BIOS settings page.

The specific steps are:

1) Restart the computer

2) Press the button prompted on the computer startup screen to enter the BIOS setting interface

3) Find the "CPU" setting option in the BIOS setting interface

4) Find "Virtualization Technology" in the "CPU" setting option. If this option is optional and turned on, it means that your computer supports VT technology.

2. Check through software

Another method is to use CPU-Z software to check whether the computer supports VT technology. Specific steps:

1) Download the CPU-Z software

2) Double-click to run CPU-Z

3) Select the "CPU" tab

4 ) Check whether "Intel (R) Virtualization Technology" (Intel processor) or "AMD-V" (AMD processor) is displayed on the page. If so, it means your computer supports VT technology.

3. What should you do if your computer does not support VT technology?

If you find that VT technology is not supported when you check your computer, there are currently several ways to install Docker:

1. Using Docker Toolbox

Docker Toolbox is an official solution. It provides a VM (virtual machine) environment for computers without VT support, thus enabling the second The operation of Docker is implemented on the layer. We can download Docker Toolbox and install it according to its instructions.

2. Using Hyper-V

Hyper-V is a built-in virtualization solution for Windows operating systems that can run virtual machines without VT technology support. If you are using Windows 10 or Windows Server 2016, your system may already come with Hyper-V. Please follow the steps below to enable it.

a. Press Windows R to open the run window, enter "appwiz.cpl" and press Enter to open "Programs and Features".

b. Click "Turn Windows features on or off".

c. Find "Hyper-V", check "Hyper-V Platform" and "Hyper-V Management Tool", click "OK", and then wait for a while to install the Hyper-V function.

d. After restarting the computer, open Hyper-V Manager→select New Virtual Machine and follow the boot steps to install a virtual operating system.

3. Using VirtualBox

VirtualBox is a powerful virtual machine software that can run virtual machines on computers without VT technology support. We can download VirtualBox and install it according to its instructions, and then run Docker in it.

4. Use cloud services such as AWS or Azure

If you only need to use Docker in a development environment, you can consider using cloud services such as AWS or Azure to start it in the cloud A virtual machine to run Docker. This method is suitable for users who need temporary use and can choose different cloud service providers according to their needs.

Summary

Docker is an excellent container technology that can effectively improve the efficiency of software deployment and maintenance. But if our computer does not support VT technology, we cannot install Docker on it. This article introduces some solutions for you, hoping to help those students who have never tried Docker, so that you can also use Docker happily.

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