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This article mainly introduces "what is docker container technology". In daily operation, I believe many people have doubts about what docker container technology is. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "what is docker container technology?" Next, please follow the editor to study!

What is docker container technology? Docker means "Docker" in English, which means to carry things. In fact, this and the characteristics of docker is the same, docker provides is a containerization of things (software, programs) process.

Docker itself is originally a program software running on the operating system, it will provide a container environment, so that our programs run independently in the container.

For example, when we make the web website distributed, we have to add servers, and then configure the configuration needed by web in each server, such as: database, web server, runtime, what, so that our website can run, but every time we add a server, we have to reconfigure it, which is very tedious.

With the docker container, we can configure the website and the environment we need into a package (docker image), then install docker on the server, pull and beat the packaged image with docker, and directly run (container). It is very convenient and more convenient to manage. Modify the configuration in the image and update it again, all the containers can be modified, and our website will be modified and updated.

Docker and virtual machine

In fact, docker is similar to a virtual machine, we should know that a virtual machine is a "computer" on the operating system, and then a variety of software can be installed and run inside. We can take this virtual good computer (actually a file) and run it directly on other computers where the virtual machine is installed, and it is also very convenient for us to install and configure the contents back and forth.

Docker actually provides such a technology, but it is more efficient, faster to start, and takes up less resources than the virtual machine, and the virtual machine is relatively bulky, this is because the virtual machine and docker have essential differences in implementation ideas.

The operation principle of the virtual machine: it is the hardware resources of the virtual computer, allocate the hardware resources, and then virtualize multiple operating systems, and the virtual computer is a complete computer.

The operation principle of docker: virtual software resources, divide the network and storage in the computer into several virtual containers, our software runs in the container, each easy to occupy only part of the computer resources, is not a complete computer.

At this point, the study of "what is docker container technology" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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