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This article mainly explains "what is the basic concept of Docker". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Now let the editor take you to learn "what is the basic concept of Docker"?

Virtualization: divided into hardware virtualization and software virtualization, software virtualization is divided into application virtualization and platform virtualization.

Container technology: belongs to operating system virtualization in platform virtualization.

Container: also known as "container", its core technology is Cgroups and namespace. Container technology realizes resource isolation through namespace and resource control through Cgroups.

Basic concepts of Docker

Docker image: Docker image is the most basic part of the whole Docker system. Docker image is the initial state of the container. The main operations include pull, build, push, delete, export and import operations.

Dockerfile file: the "edict" of building a Docker image, and anyone who executes the docker build command with this file will produce an image with the same function.

Docker Warehouse: Registry is a tool for centralized storage of Docker images, which can facilitate the storage, distribution, update and other management operations of images.

Docker container: the Docker container is a running instance of an image. It adds a readable and writable file layer to the existing file layer of the image, making the container look like a dynamic image.

Data volumes: including data volumes and data volume containers.

1. A data volume is a directory that is mounted into the container by Docker daemon, so the data volume does not belong to the federated file system. In other words, the contents of the data volume will not disappear because of the deletion of the container, just like a U disk.

2. A data volume container is just a container for storing data, and only other containers are allowed to mount it.

Docker three Musketeers: Docker Machine (tools), Docker Compose (orchestration), Docker Swarm (Cluster Management tools)

At this point, I believe you have a deeper understanding of "what is the basic concept of Docker". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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