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This article introduces the relevant knowledge of "how to install docker compose". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Pre-knowledge

Compose is a tool for Docker container orchestration and a sharp tool for integrating and publishing docker applications. You can define and run multi-container applications. In Compose, you can use YAML files to configure your application services. Then, with a simple command, you can create and start all the services you configure.

Docker-compose is based on docker, so we need to install docker before we can use docker-compose.

There are basically three steps to using Compose:

Define your application environment in Dockfile, which can be multiple docker applications.

Define the services that make up the application in docker-compose.yml.

Use the dcoker-compose up command to run the entire application solution.

Docker installation

Uninstall the old version

Sudo yum remove docker\ docker-client\ docker-client-latest\ docker-common\ docker-latest\ docker-latest-logrotate\ docker-logrotate\ docker-engine

Install Docker Engine-Community

Sudo yum install-y yum-utils device-mapper-persistent-data lvm2sudo yum-config-manager\-- add-repo\ http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.reposudo yum install docker-ce docker-ce-cli containerd.io

Start docker

Sudo systemctl start docker

Install the plug-in

Yum install https://download.docker.com/linux/fedora/30/x86_64/stable/Packages/containerd.io-1.2.6-3.3.fc30.x86_64.rpm

Test whether docker is installed successfully

Docker-version

This is where the docker installation is complete!

Docker-compose installation

The download address on the official website may be slow. It is recommended to use the following

Download and install

Curl-L https://get.daocloud.io/docker/compose/releases/download/1.26.2/docker-compose-`uname-s`-`uname-m` > / usr/local/bin/docker-compose

Authorization (must be authorized, responsible without permission)

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

Verify that docker-compose is installed successfully (check the version)

Docker-compose version

Docker-compose has been installed successfully!

Getting started with Docker Compose

Generate mysql and redis containers through docker-compose

1. Create a project directory and enter the

$mkdir composetest$ cd composetest

two。 Create a docker-compose.yml file and put it in the project directory

The specific contents of the document are as follows:

Version: "3.0" services: mysqldb: image: mysql:5.7.19 container_name: mysql ports: -" 3306 image 3306 "volumes:-/ root/mysql/conf:/etc/mysql/conf.d-/ root/mysql/logs:/logs-/ root/mysql/data:/var/lib/mysql environment: MYSQL_ROOT_PASSWORD: root networks:-ems Depends_on:-redis redis: image: redis:4.0.14 container_name: redis ports:-"6379redis:4.0.14 container_name 6379" networks:-ems volumes:-/ root/redis/data:/data command: redis-server networks: ems:

3. Start

Start in the current folder

Foreground start

Docker-compose up

Background start

Docker-compose up-d

The output log is as follows

Check to see if containers are available in docker

Check to see if the container generates

Test whether the redis container is available

Test whether the mysql container is available

At this point, the entry case has been completed!

This is the end of "how to install docker compose". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

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