Docker Compose问题（ECONNREFUSED）

huangapple
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英文:

Docker compose problems (ECONNREFUSED)

问题

我有两个用于后端（.NET Core）和前端 Angular 的 Docker Compose 文件。它们应该相互通信。为此，我尝试了一个网络。但我总是收到以下消息：

[HPM] 尝试代理请求从 localhost:4200 到 http://localhost:5000 时发生错误 (ECONNREFUSED)

两个容器都在运行中。后端的 Compose 通过 Visual Studio 启动。前端的 Compose 通过 PowerShell 启动。

我尝试过前端使用端口 80 和 5000。结果都一样。

对于网络，我尝试过不使用外部网络。对于外部网络，我手动创建了名为 "test_network" 的网络。

后端 Docker Compose：

  1. version: '3.7'
  3. services:
  4.   backend_sql:
  5.     image: mcr.microsoft.com/mssql/server:2017-GA-ubuntu
  6.     container_name: testsql
  7.     networks:
  8.       - test_network
  9.     ports:
  10.       - "1440:1433"
  11.     volumes:
  12.       - testsqldata:/var/opt/mssql
  14.   backend_api:
  15.     image: ${DOCKER_REGISTRY-}backendapi
  16.     container_name: testapi
  17.     build:
  18.       context: .
  19.       dockerfile: backendAPI/Dockerfile
  20.     networks:
  21.       - test_network
  22.     depends_on:
  23.       - backend_sql
  24.     ports:
  25.       - "5000:80"
  27. networks:
  28.   test_network:
  29.     external:
  30.       name: test_network
  32. volumes:
  33.   testsqldata:
  34.     driver: local
  35.     name: testsqldata

前端 Docker Compose：

  1. version: "3.7"
  2. services:
  3.   testapp:
  4.     container_name: testapp
  5.     build: .
  6.     networks:
  7.       - test_network
  8.     ports:
  9.       - "4200:4200"
  10.       - "49153:49153"
  11.     volumes:
  12.       - "/app/node_modules"
  13.       - ".:/app"
  15. networks:
  16.   test_network:
  17.     external:
  18.       name: test_network

前端 Dockerfile：

  1. FROM node:10.16.3-alpine
  2. WORKDIR /app
  3. COPY package.json .
  4. RUN npm install
  5. COPY .
  6. EXPOSE 4200 49153
  7. CMD npm run start

package.json：

  1. "scripts": {
  2.   "ng": "ng",
  3.   "start": "ng serve --host 0.0.0.0 --port 4200 --poll 500 --disableHostCheck",
  4.   "serve": "ng serve --proxy-config src/proxy.server.config.js"
  5. }

proxy.server.config.js：

  1. const PROXY_CONFIG = [
  2.   {
  3.     context: [
  4.       '/api',
  5.     ],
  6.     target: 'http://localhost:5000',
  7.     secure: false,
  8.     logLevel: 'debug',
  9.     ws: true,
  10.     pathRewrite: {
  11.       "^/api": ""
  12.     }
  13.   }
  14. ];
  16. module.exports = PROXY_CONFIG;

希望这些信息对你有帮助。如果需要进一步的帮助，请随时告诉我。

英文:

I have two docker-compose for the backend (.net Core) and for the Angular frontend. These should communicate with each other. For this I tried a network. But I always get the following message:

[HPM] Error occurred while trying to proxy request /appinfo from localhost:4200 to http://localhost:5000 (ECONNREFUSED)

Both containers are running. The backend-compose is started via Visual Studio. The frontend-compose is started using the powershell.

I have tried both port 80 and 5000 in the frontend. The result is the same.

For the network I tried it without external. For the external I created the network manually with "docker network create test_network".

backend docker-compose:

  1. version: '3.7'
  3. services:
  4.   backend_sql:
  5. 	image: mcr.microsoft.com/mssql/server:2017-GA-ubuntu
  6. 	container_name: testsql
  7. 	networks:
  8. 	  - test_network
  9. 	ports:
  10. 	  - "1440:1433"
  11. 	volumes:
  12. 	 - testsqldata:/var/opt/mssql
  14.   backend_api:
  15. 	image: ${DOCKER_REGISTRY-}backendapi
  16. 	container_name: testapi
  17. 	build:
  18. 	  context: .
  19. 	  dockerfile: backendAPI/Dockerfile
  20. 	networks:
  21. 	  - test_network
  22. 	depends_on:
  23. 	 - backend_sql
  24. 	ports:
  25. 	 - "5000:80"
  27. networks:
  28.   test_network:
  29. 	external:
  30. 		name: test_network
  32. volumes:
  33.   testsqldata:
  34. 	driver: local
  35. 	name: testsqldata

frontend docker-compose:

  1. version: "3.7"
  2. services:
  3.   testapp:
  4. 	container_name: testapp
  5. 	build: .
  6. 	networks:
  7. 	  - test_network
  8. 	ports:
  9. 	  - "4200:4200"
  10. 	  - "49153:49153"
  11. 	volumes:
  12. 	  - "/app/node_modules"
  13. 	  - ".:/app"
  15. networks:
  16.   test_network:
  17. 	external:
  18. 	  name: test_network

frontend dockerfile:

  1. FROM node:10.16.3-alpine
  2. WORKDIR /app
  3. COPY package.json .
  4. RUN npm install
  5. COPY . .
  6. EXPOSE 4200 49153
  7. CMD npm run start

package.json:

  1. "scripts": {
  2. 	"ng": "ng",
  3. 	"start": "ng serve --host 0.0.0.0 --port 4200 --poll 500 --disableHostCheck",
  4. 	"serve": "ng serve --proxy-config src/proxy.server.config.js",

proxy.server.config.js:

  1. const PROXY_CONFIG = [
  2. 	{
  3. 		context: [
  4. 			'/api',
  5. 		],
  6. 		target: 'http://localhost:5000',
  7. 		secure: false,
  8. 		logLevel: 'debug',
  9. 		ws: true,
  10. 		pathRewrite: {
  11. 			"^/api": ""
  12. 		}
  13. 	}
  14. ];
  16. module.exports = PROXY_CONFIG;

答案1

得分: 1

从Docker Compose网络文档中，

> 现在，每个容器都可以查找主机名web或db，并返回相应容器的IP地址。例如，web的应用程序代码可以连接到URL postgres://db:5432 并开始使用Postgres数据库。

您应该使用容器名称作为主机名。

英文:

From the Docker Compose networking documentation,
> Each container can now look up the hostname web or db and get back the appropriate container’s IP address. For example, web’s application code could connect to the URL postgres://db:5432 and start using the Postgres database.

You should use the container names as hostname.

huangapple
  • 本文由 发表于 2020年1月3日 16:37:08
  • 转载请务必保留本文链接：https://go.coder-hub.com/59575392.html
  • .net-core
  • angular
  • docker
  • docker-compose
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