docker-compose.yml

Question

在进行docker-compose时出现以下错误。该应用程序正在运行，但无法发出任何api发布/获取请求。快递服务器正在使用端口5000。

] [HPM]尝试代理请求/ api / users / user时发生错误从localhost：3000到http://localhost:5000/（ECONNREFUSED）（https://nodejs.org/api/errors.html#errors_common_system_errors）

尽管已设置反应代理，但错误仍然存在。

setupProxy.js

const proxy = require('http-proxy-middleware');

module.exports = function(app) {
//   app.use(proxy('/auth/github', { target: 'http://localhost:3000/' }))
  app.use(proxy('/api/users/auth/github', { target: 'http://localhost:5000/' }))
  app.use(proxy('/api/users/', { target: 'http://localhost:5000/' }))
  app.use(proxy('/api/posts/', { target: 'http://localhost:5000/' }))
}

Dockerfile

FROM node:8.10.0-alpine
EXPOSE 3000
COPY . /home/app
WORKDIR /home/app
RUN npm install
CMD ["npm", "start"]

docker-compose.yml

# docker-compose.yml
version: "3"
services:
  app:
    build: .
    depends_on:
      - postgres
    ports:
      - "3000:3000"
      - "9229:9229"
  postgres:
    image: postgres:9.6.8-alpine
    expose:
      - 5432
    environment:
      POSTGRES_PASSWORD: postgres
      POSTGRES_USER: user
      POSTGRES_DB: db

package.json

{
  "name": "sequelize-demo",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "client": "cd ./client && npm start",
    "server": "nodemon app.js  --ignore client",
    "build": "echo 'hello build'",
    "start": "concurrently --kill-others   \"npm run server\" \"npm run client\""
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "async": "^2.6.1",
    "bcrypt": "^3.0.3",
    "body-parser": "^1.18.3",
    "concurrently": "^4.1.0",
    "cookie-parser": "^1.4.3",
    "cookie-session": "^2.0.0-beta.3",
    "cors": "^2.8.5",
    "crypto": "^1.0.1",
    "dotenv": "^6.2.0",
    "express": "^4.16.4",
    "express-flash": "0.0.2",
    "express-session": "^1.15.6",
    "jsonwebtoken": "^8.4.0",
    "morgan": "^1.9.1",
    "nodemailer": "^5.1.1",
    "nodemon": "^1.18.9",
    "passport": "^0.4.0",
    "passport-github": "^1.1.0",
    "passport-github2": "^0.1.11",
    "passport-jwt": "^4.0.0",
    "passport-local": "^1.0.0",
    "pg": "^7.8.0",
    "pg-hstore": "^2.3.2",
    "sequelize": "^4.42.0"
  }
}

Answer 1

我认为您需要在 docker-compose.yml 中将 localhost：5000 更改为服务的名称。在这种情况下，您需要在撰写文件中设置在 localhost：5000 上运行的任何服务器。请记住，您的容器在Docker网络中运行，因此，它们无法在主机上访问您的 localhost 。

在此示例中，您可以看到我需要将 PMA_HOST 环境变量设置为 db 服务而不是“普通主机”。在数据库配置中，在我的源代码上，我还将主机设置为相同的 db 服务，并且一切正常。

版本：“ 3”

services:
  app:
    build: .
    ports:
      - 80:80
    depends_on:
      - db
  db:
    image: mariadb:10.0
    volumes:
      - db:/var/lib/mysql
    ports:
      - 3306:3306
    environment:
      MYSQL_ROOT_PASSWORD: 123
  phpmyadmin:
    image: phpmyadmin/phpmyadmin
    ports:
      - 8080:80
    environment:
      PMA_HOST: db
    depends_on:
      - db
volumes:
  db:

这是必需的，因为每次您运行新容器时，它将为新Docker网络获取一个不同的IP。在这种情况下，我们总是需要检查该新IP并将其设置在我们的代码中。 Docker通过让我们将新主机附加到一个简单且不可变的名称来解决此问题，该名称就是服务的名称。

Answer 2

我改变了几件事。

Dockerfile

FROM node:8.10.0-alpine
EXPOSE 80:8080
COPY . /home/app
WORKDIR /home/app
RUN npm install
CMD ["npm", "start"]

docker-compose.yml

version: "3"
services:
  app:
    build: .
    depends_on:
      - postgres
    ports:
      - "8080:8080"
    environment:
      - PORT=8080
      - NODE_ENV=dev
      - ENV_NAME=local  
  postgres:
    image: postgres:9.6.8-alpine
    expose:
      - 5432
    environment:
      POSTGRES_PASSWORD: postgres
      POSTGRES_USER: user
      POSTGRES_DB: db

setupProxy.js

const proxy = require('http-proxy-middleware');

module.exports = function(app) {
  app.use(proxy('/auth/github', { target: 'http://127.0.0.1:8080/' }))
  app.use(proxy('/api/users/auth/github', { target: 'http://127.0.0.1:8080/' }))
  app.use(proxy('/api/users/', { target: 'http://127.0.0.1:8080/', "secure": false }))
  app.use(proxy('/api/posts/', { target: 'http://127.0.0.1:8080/' }))
}

Docker不接受代理API服务器

2 个答案:

docker-compose.yml