Shulou(Shulou.com)06/02 Report--

Today, I will talk to you about what the Docker architecture and underlying technology are. Many people may not know much about it. In order to make you understand better, the editor summed up the following for you. I hope you can get something according to this article.

Docker Platform

Docker provides a platform for developing, packaging, and running app

Isolate the app from the underlying infrastructure and use dokcer to control the app

Docker Engine (Docker engine)

Background process (dokcerd)

The process provides REST API Server

And provide CLI interface (docker)

Docker is a CS architecture.

Command: ps-ef | grep docker to view the processes running in the background by docker

Docker Architecture

Low-level technical support

Namespaces: do quarantine pid,net,ipc,mnt.uts

Cotrol groups: make resource restrictions

Layering of Union file system:Container and iamge

Introduction of experimental environment

Need to download the source code

Overview of Docker Image

What is Image?

Collection of files and meta data (root filesystem)

Hierarchical, and each layer can add, change and delete files to become a new image

Different image can share the same layer (layer)

Image itself belongs to read-only.

Acquisition of Image

Docker image ls views all image lists

Docker pull ubuntu:14.04 went to pull ubuntu14.0.4 's image.

Docker hub is an open and free one provided to us by docker.

Entering docker hub and clicking Explore will give us a list of some iamge on docker hub, which is basically divided into two categories.

One is some official Repositories of Explore Offcial Repositories, which can be pulled directly through the docker pull name and version number. If the version number is left empty, the latest version can be pulled.

Docker pull ubuntu:14.04

After reading the above, do you have any further understanding of the Docker architecture and underlying technology? If you want to know more knowledge or related content, please follow the industry information channel, thank you for your support.

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