amazon-web-services - 启动 ec2 服务器时自动启动 docker

Question

每次我重新启动我的 ec2 服务器时，我都必须这样做:sudo systemctl start docker然后 docker-compose up -d启动我所有的容器。
有没有办法在实例开始时自动运行这两个命令？
我读过这篇 answer我认为理想情况下我想知道如何做到这一点:

Create a systemd service and enable it. All the enabled systemsservices will be started on powering.

你知道如何创建这样的 systemd 服务吗？
[编辑 1] :在克里斯威廉的评论之后，这是我所做的:
谢谢 Chris，所以我创建了一个 docker_boot.service ，内容如下:

[Unit]
Description=docker boot
After=docker.service

[Service]
Type=simple
Restart=always
RestartSec=1
User=ec2-user
ExecStart=/usr/bin/docker-compose -f docker-compose.yml up

[Install]
WantedBy=multi-user.target

我在 /etc/systemd/system 中创建了它文件夹
然后我做了:

sudo systemctl enable docker
sudo systemctl enable docker_boot

当我打开服务器时，唯一运行的 Docker 镜像是 certbot/certbot和 telethonkids/shinyproxy请在我的 docker-compose.yml下面找到我的内容文件。
您是否看到缺少什么以便所有图像都启动并运行？

version: "3.5"
services:
  rstudio:
    environment:
      - USER=username
      - PASSWORD=password
    image: "rocker/tidyverse:latest"
    build:
     context: ./Docker_RStudio
     dockerfile: Dockerfile
    volumes:
      - /home/ec2-user/R_and_Jupyter_scripts:/home/maxence/R_and_Jupyter_scripts
    working_dir: /home/ec2-user/R_and_Jupyter_scripts
    container_name: rstudio
    ports:
      - 8787:8787

  jupyter:
    image: 'jupyter/datascience-notebook:latest'
    ports:
      - 8888:8888
    volumes:
     - /home/ec2-user/R_and_Jupyter_scripts:/home/joyvan/R_and_Jupyter_scripts
    working_dir: /home/joyvan/R_and_Jupyter_scripts
    container_name: jupyter

  shiny:
    image: "rocker/shiny:latest"
    build:
     context: ./Docker_Shiny
     dockerfile: Dockerfile
    container_name: shiny
    ports:
     - 3838:3838

  nginx:
    image: nginx:alpine
    container_name: nginx
    restart: on-failure
    networks:
     - net
    volumes:
     - ./nginx.conf:/etc/nginx/nginx.conf
     - ./data/certbot/conf:/etc/letsencrypt
     - ./data/certbot/www:/var/www/certbot
    ports:
     - 80:80
     - 443:443
    command: "/bin/sh -c 'while :; do sleep 6h & wait $${!}; nginx -s reload; done & nginx -g \"daemon off;\"'"
    depends_on:
     - shinyproxy

  certbot:
    image: certbot/certbot
    container_name: certbot
    restart: on-failure
    volumes:
     - ./data/certbot/conf:/etc/letsencrypt
     - ./data/certbot/www:/var/www/certbot
    entrypoint: "/bin/sh -c 'trap exit TERM; while :; do certbot renew; sleep 12h & wait $${!}; done;'"

  shinyproxy:
      image: telethonkids/shinyproxy
      container_name: shinyproxy
      restart: on-failure
      networks:
       - net
      volumes:
       - ./application.yml:/opt/shinyproxy/application.yml
       - /var/run/docker.sock:/var/run/docker.sock
      expose:
        - 8080

  cron:
   build:
     context: ./cron
     dockerfile: Dockerfile
   container_name: cron
   volumes:
     - ./Docker_Shiny/app:/home
   networks:
     - net

networks:
 net:
   name: net

Answer 1

使用 亚马逊 Linux 2 我试图复制这个问题。显然，我没有运行您确切的所有依赖项 docker-compose.yml ，因此我使用了 docker-compose.yml来自 here为了我的验证。文件设置 wordpress与 mysql .
我采取的步骤如下(在主文件夹中执行为 ec2-user):
1. 安装 docker

sudo yum update -y  
sudo yum install -y docker
sudo systemctl enable docker
sudo systemctl start docker

2.安装docker-compose

sudo curl -L https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m) -o /usr/bin/docker-compose

sudo chmod +x /usr/bin/docker-compose

3.创建 docker-compose.yml

mkdir myapp 

创建文件 ./myapp/docker-compose.yml :

version: '3.3'

services:
   db:
     image: mysql:5.7
     volumes:
       - db_data:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: somewordpress
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress

   wordpress:
     depends_on:
       - db
     image: wordpress:latest
     ports:
       - "8000:80"
     restart: always
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
       WORDPRESS_DB_NAME: wordpress
volumes:
    db_data: {}

4.创建 docker_boot.service该文件与您的不同，因为您的文件中几乎没有潜在问题:

不使用绝对路径

ec2-user可能没有权限运行 docker

创建文件 ./myapp/docker_boot.service :

[Unit]
Description=docker boot
After=docker.service

[Service]
Type=oneshot
RemainAfterExit=yes
WorkingDirectory=/home/ec2-user/myapp
ExecStart=/usr/bin/docker-compose -f /home/ec2-user/myapp/docker-compose.yml up -d --remove-orphans

[Install]
WantedBy=multi-user.target

5.复制 docker_boot.service到 systemd

sudo cp -v ./myapp/docker_boot.service /etc/systemd/system

6.启用并启动 docker_boot.service

sudo systemctl enable docker_boot.service
sudo systemctl start docker_boot.service

注:第一个 start可能需要一些时间，因为它会拉取所有需要的 docker 镜像。或者，首先手动启动 docker-compose 以避免这种情况。
7.检查 docker_boot.service的状态

sudo systemctl status docker_boot.service

8.检查wordpress是否up

curl -L localhost:8000

9. 重启
检查 docker_boot.service通过登录实例并使用 sudo systemctl status docker_boot.service 在实例重启后运行和/或 curl -L localhost:8000 .