Detailed explanation of Docker compose orchestration tool

version: specifies the version of compase that this yml file is based on services: specifies the service options for creating containers Service name: for example, nginx, etc. hostname: container host name build: specifies the context path for building the image context: context path dockerfile: specifies the Dockerfile file name for building the image ports: exposes the container port, the same as -p, but the port cannot be lower than 60; for example: - 1234:80
		networks: join the network configured under the top-level networks deploy: specify the configuration related to deploying and running services, which can only be used in Swarm mode volumes: mount the host path or command volume image: specify the image running the container command: execute the command, overwrite the default command container_name: specify the container name. Since the container name is unique, if a custom name is specified, it cannot be scaled
	environment: Add environment variables restart: Restart strategy, define whether to restart the container; no (default, do not restart), always (always restart),
no-failure (restart when exit status is not 0), unless-stoped (when the container exits, ignore the container that was stopped before the daemon process started)
Networks: configure the network, specify network card devices, etc.

The basic usage format is docker-compose [options] [COMMAND] [ARGS...]

Options --verbose: Output more debugging information --version: Print version and exit -f, --file FILE: Use a specific compose template file, default is docker-compose.yml
-p, --project-name NAME: specifies the project name. By default, the directory name is used. Common commands build Rebuild the service ps List containers up Create and start containers exec Execute commands in the container scale Specify the number of service containers to start top Display the running container processes logs View the output of the service container down Delete containers, networks, data volumes, and images stop/start/restart Stop/start/restart the service

#Environment deployment All hosts install the docker environment (the content is docker basics)
yum install docker-ce -y

#Download compose, you can download it directly through curl link, or drag it into linux after downloading it outside
crul......

#Give docker compose execution permission cp -p docker-compose /usr/local/bin/
chmod +x /usr/local/bin/docker-compose

mkdir /root/compose_nginx


#Use compose to create a container#Write the yml file vim /root/compose_nginx/docker-compose.yml
version: '3'
services:
  nginx:
    hostname: nginx
    build:
      context: ./nginx
      dockerfile: Dockerfile
    ports:
     - 1216:80
     - 1217:443
    networks:
     - cluster
    volumes:
     - ./wwwroot:/usr/local/nginx/html
networks:
  cluster:

#Put in relevant files mkdir nginx
mkdir wwwroot
echo "this is nginx" > wwwroot/index.html

#Execute the yml file to create a container docker-compose -f docker-compose.yml up -d