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

This article mainly explains "the introduction and installation of compose commands in docker". Interested friends may wish to have a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "introduction and installation of compose commands in docker".

Brief introduction

The Compose project is the official open source project of Docker, which is responsible for the rapid orchestration of Docker container clusters. Functionally, it is very similar to Heat in OpenStack.

Its code is currently open source on https://github.com/docker/compose.

Compose positioning is "applications that define and run multiple Docker containers (Defining and running multi-container Docker applications)", formerly known as the open source project Fig.

From the previous introduction, we know that using a Dockerfile template file makes it easy for users to define a separate application container. However, in daily work, we often encounter situations that require multiple containers to cooperate with each other to complete a task. For example, to implement a Web project, in addition to the Web service container itself, you often need to add a back-end database service container, or even a load balancing container.

Compose happens to meet such needs. It allows users to define a set of associated application containers as a project (project) through a separate docker-compose.yml template file (YAML format).

There are two important concepts in Compose:

Service (service): a container for an application that can actually include several container instances running the same image.

Project (project): a complete business unit consisting of a set of associated application containers, defined in the docker-compose.yml file. The default management object of Compose is the project, and the life cycle of a set of containers in the project can be easily managed through subcommands.

The Compose project is written by Python and the implementation invokes the API provided by the Docker service to manage the container. Therefore, as long as the operating platform supports Docker API, Compose can be used for orchestration management on it.

Installation

If it is mac or wins, it comes with docker-compose after installing docker, which can be viewed using docker-compose version, but if it is linux, docker-compose will not be installed and needs to be installed separately.

This method is done through the download link of the specified version, and you first need to get the latest version.

1. Get the latest version (optional)

Browser Open: https://github.com/docker/compose/releases

The latest version seen by the author is 1.25.5

two。 Download the command and output it to the file / usr/local/bin/docker-compose

# # command (replace the version number in the link with the latest version seen by the reader)

Curl-L https://github.com/docker/compose/releases/download/1.25.5/docker-compose-`uname-s`-`uname-m` > / usr/local/bin/docker-compose

# # Command interpretation

# `uname-s`: to obtain the system version, the author's is: Linux

# `uname-m`: to obtain the number of system digits, the author's is: x86room64

3. Add execution permission

Chmod + x / usr/local/bin/docker-compose

This approach may have network problems. If it fails, try it a few more times.

At this point, I believe you have a deeper understanding of "introduction and installation of compose commands in 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!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.