链接的 docker-compose 容器发出 http 请求 [英] Linked docker-compose containers making http requests

问题描述

我已经在网上找了一段时间，但没有找到解决我的问题的方法，这类似于 StackOverflow 问题 容器之间的 Docker HTTP 请求.但是这个答案已经是我在我的电脑上所做的.我正在提供我的 docker-compose 文件

I've been looking on the web for a while and haven't found a solution to my problem which is similar to this StackOverflow question Docker HTTP-requests between containers. But this answer is already what I'm doing in my computer. I'm providing my docker-compose file

version: "3"
services:
  web:
    image: ecdavis15/tsn-web-server
    ports:
      - "3000:3000"
    links:
      - app
  app:
    image: ecdavis15/tsn-app-server
    ports:
      - "3030:3030"
    links:
      - mongo
  mongo:
    image: mongo
    ports:
      - "27017:27017"
    volumes:
      - ./data/db:/data/db

在我的 Web 容器中，我向 http://app:3030/history 或者 http://app:3030/rules 发出了一个 http get 请求，但我没有看到请求找到了通往应用程序容器的路.我在浏览器控制台中看到的是此错误消息 net::ERR_NAME_NOT_RESOLVED.我不确定为什么 http 请求没有进入应用程序容器，因为它已链接到 Web 容器.有什么想法吗?

In my web container I make an http get request to http://app:3030/history or maybe http://app:3030/rules but I'm not seeing the request find its way to the app container. What I'm seeing in the browser console is this error message net::ERR_NAME_NOT_RESOLVED. I'm not sure why the http request isn't getting into the app container since it's linked to the web container. Any ideas?

推荐答案

由于您进行了 Ajax 调用，因此它将由客户端而非服务器端的浏览器发送.因此，当您从 <IP>:3000 调用 API 到 app:3030 时，您的浏览器不知道什么是应用程序.所以你能做的事情很少

Since you make an Ajax call it will be sent by the browser which is client side and not server side. So when you make a call from <IP>:3000 to app:3030 for API, your browser has no idea what app is. So you have few things you can do

/etc/hosts

<IP> app 

然后当你使用app:3000浏览应用时，app:3030会自动指向正确的地址.

Then when you browse app using app:3000, app:3030 will automatically point to the correct address.

您可以使用 javascript 来获取您应该用于 api 的 url

You can use javascript to get the url that you should be using for api

document.location.scheme + "://" + document.location.hostname + ":3030"

使用nginx

可以创建nginx反向代理

Using nginx

You can create nginx reverse proxy

location / {
   proxy_pass http://localhost:3000;

   location /api {
      proxy_pass http://localhost:3030;
   }
}

这将需要对您的代码文件进行一些更改，以便您使用 /api

This will require some change in your code file so that you use /api

这篇关于链接的 docker-compose 容器发出 http 请求的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！