Container orchestration compose deployment

1. Introduction to docker-compose

yaml

The design goal of yaml language is to facilitate human reading and writing. It is essentially a universal data serialization format. The
basic syntax is as follows

• Tab key indentation is not supported, use spaces for indentation
• Usually indented 2 spaces at the beginning
• Indent 1 space after the character, such as colon, comma, horizontal bar
• Use single quotes if it contains special characters
• # Indicates a comment
• Boolean values ​​must be enclosed in quotation marks

There are three supported data structures

• Object: A collection of key-value pairs, also known as a map/hash/dictionary
• Array: A set of values ​​arranged in order, also known as sequence/list
• Scalar: a single, indivisible value

Second, the deployment of compose

You need to deploy the docker environment before deploying compose

yum install docker-ce -y

Download compose

mkdir compose_nginx
cd compose_nginx

curl -L https://github.com/docker/compose/releases/download/1.21.1/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose

It’s not easy to download and drag me the package extraction code: zqzq; docker-compose

cp -p docker-compose /usr/local/bin/
chmod +x /usr/local/bin/docker-compose

mkdir /root/compose_nginx

Three, create a container (take nginx as an example)

1. Write a 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:

2. Put in relevant documents

mkdir nginx
mkdir wwwroot
echo "this is nginx" > wwwroot/index.html

yum -y install tree
tree ./

3. Execute the yml file to create a container

docker-compose -f docker-compose.yml up -d

4. Check to see if the container is created successfully