使用docker-compose和nginx来部署node项目

1、基本目录结构

.
├── README.md
├── docker-compose.yml
├── nginx
│   └── default.conf
├── nodejs
│   └── index.js
├── nodejs2
│   └── index.js
└── static
    └── index.html

4 directories, 6 files

2、文件介绍说明

• docker-compose.yml文件主要写配置的

• nginx主要是nginx的配置

  nodejs和nodejs2都是后端项目
  static文件是静态文件

1、关于docker-compose.yml文件的代码

version: '3.1'

services:
  nginx:
    image: nginx:alpine
    ports:
      # 本地对外端口8000，镜像的80
      - '8000:80'
    volumes:
      # 将本地的文件目录映射到镜像中
      - ./static:/srv/www/static
      - ./nginx/default.conf:/etc/nginx/conf.d/default.conf
    depends_on:
      - nodejs
      - nodejs2
  nodejs:
    image: node:alpine
    environment:
      NODE_ENV: production
    working_dir: /home/app
    restart: always
    volumes:
      - ./nodejs:/home/app
    # 启动命令
    command: ['node', 'index']

  nodejs2:
    image: node:alpine
    environment:
      NODE_ENV: production
    working_dir: /home/app2
    restart: always
    volumes:
      - ./nodejs2:/home/app2
    command: ['node', 'index

2、关于nodejs的文件

const http = require('http');

http
  .createServer(function (req, res) {
    res.write('nodejs');
    res.end();
  })
  .listen(8080);

3、关于nginx文件内容

server {
  listen 80;
  # root /srv/www;
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forwarded-Proto $scheme;

  location / {
    root   /srv/www/static;
    index  index.html index.htm;
  }

  location /api {
    try_files $uri @nodejs;
  }

  # location @nodejs {
  #   proxy_pass http://nodejs:8080;
  # }

  location @nodejs {
    proxy_pass http://nodejs2:9000;
  }
}

4、运行命令启动项目

docker-compose up
docker-compose up -d

1、修改nginx/default.conf的配置

# 定义两个服务
upstream nginx_canary {
  server nodejs:8080 weight=50;
  server nodejs2:9000 weight=50;
  # 如果不想使用哪个服务就weight=down
}

server {
  listen 80;
  # root /srv/www;
  proxy_set_header Host $host;
  proxy_set_header X-Real-IP $remote_addr;
  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  proxy_set_header X-Forwarded-Proto $scheme;

  location / {
    root   /srv/www/static;
    index  index.html index.htm;
  }

  location /api {
    try_files $uri @nodejs;
  }

  # location @nodejs {
  #   proxy_pass http://nodejs:8080;
  # }

  # location @nodejs {
  #   proxy_pass http://nodejs2:9000;
  # }

  # 负载均衡的使用方式
  location @nodejs {
    proxy_pass http://nginx_canary;
  }
}

2、启动docker-compose