Shulou(Shulou.com)06/03 Report--

In this issue, the editor will bring you how to install and use Docker Compose. The article is rich in content and analyzed and described from a professional point of view. I hope you can get something after reading this article.

What is Docker Compose?

Docker Compose is a tool for defining and running multi-container applications

Docker Compose defines multi-container docker applications through yml files

Docker Compose uses a command to create or manage multiple containers according to the definition of the yml file

Docker Compose is used to do Docker multi-container control, is a thing used to automate Docker. With Docker Compose, you can automate all the complicated Docker operations with one command (which can be simply understood as batch processing).

II. Docker Compose installation steps

1. Download the Docker Compose binary file. The version I downloaded here is 1.29.2.

Sudo curl-L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname-s)-$(uname-m)"-o / usr/local/bin/docker-compose

2. Add executable permissions to the binary file you just downloaded

Sudo chmod + x / usr/local/bin/docker-compose

3. Check whether the installation is successful by docker-compose-- version command

III. Differences in Docker Compose versions

Volume_from, extends, group_add and other attributes are not supported in v3 version.

The settings of cpu and memory properties have been moved to deploy

Docker Swarm is supported in v3 version but not in v2 version

Note: a new compatibility logo has been introduced in 1.20.0 to help developers easily transition to v3. There are still some problems that officials do not recommend to use directly in production. It is recommended that you start with v3 version directly.

IV. Basic Docker Compose commands

The Docker Compose command is basically not much different from Docker, mainly for Docker Compose life cycle control, log format and other related commands, you can check the help through docker-compose-- help.

# build startup nignx container docker-compose up-d nginx # enter the nginx container docker-compose exec nginx bash # will stop the container started by the UP command And delete container docker-compose down # show all containers docker-compose ps # restart nginx container docker-compose restart nginx # build nginx image docker-compose build nginx # build nginx image docker-compose build without cache-- no-cache nginx # View nginx's log docker-compose logs nginx # View nginx's real-time log docker-compose logs-f nginx # verify (docker-compose.yml) file configuration # when the configuration is correct, nothing is output, but when the file is misconfigured Output error message docker-compose config-Q # output docker log docker-compose events of nginx in the form of json-- json nginx # pause nignx container docker-compose pause nginx # restore ningx container docker-compose unpause nginx # delete nginx container docker-compose rm nginx # stop nignx container docker-compose stop nginx # launch the nignx container docker-compose start nginx. These are the steps of installing and using Docker Compose shared by the editor. If you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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