主机在Nginx Docker Compose中未找到上游。

huangapple
go评论83阅读模式
英文:

host not found in upstream with nginx docker compose

问题

我知道这个问题已经被问过很多次，但是其中没有一个解决方案适用于我。

我正在尝试使用nginx将我的Angular应用程序和Node.js后端docker化。

我所做的是创建了一个docker-compose文件。
它包括三个服务和nginx。

1：space-frontend

2：space-api

3：mongodb

我在nginx配置文件中通过它们的服务名称调用前端和后端，如http://space-frontend:80和http://space-api:3000，但是日志中出现了错误

[emerg] 1#1: host not found in upstream "space-api" in /etc/nginx/nginx.conf:23

前端正常工作。
我无法理解我错在哪里。

供参考，
我的前端Docker文件

  1. FROM node:16-alpine AS builder
  2. WORKDIR /app
  3. COPY . .
  4. RUN npm i && npm run build --prod
  5. FROM nginx:alpine
  6. RUN mkdir /app
  7. COPY --from=builder /app/dist/Space-Locator/browser /app
  8. COPY nginx.conf /etc/nginx/nginx.conf

我的前端nginx配置

  1. events {
  2.     worker_connections 1024;
  3. }
  4. http {
  5.     include /etc/nginx/mime.types;
  7.     server {
  8.         listen       80;
  9.         server_name  localhost;
  10.         root /app;
  12.         location / {
  13.             index  index.html;
  14.             try_files $uri $uri/ /index.html;
  15.         }
  17.         error_page   500 502 503 504  /50x.html;
  18.         location = /50x.html {
  19.             root   /usr/share/nginx/html;
  20.         }
  21.     }
  22. }

后端API Docker文件

  1. FROM node:14-alpine as build-step
  2. RUN mkdir -p /usr/app
  3. WORKDIR /usr/app
  4. COPY package.*json /usr/app/
  5. RUN npm install
  6. COPY . /usr/app/
  7. EXPOSE 3000
  8. CMD [ "npm", "start" ]

我的docker-compose文件

  1. version: "3.8"
  2. services:
  3.   reverse_proxy:
  4.     image: nginx:1.17.10
  5.     container_name: reverse_proxy
  6.     depends_on:
  7.       - space-frontend
  8.       - space-api
  9.       - database
  10.     volumes:
  11.       - ./reverse_proxy/nginx.conf:/etc/nginx/nginx.conf  
  12.     ports:
  13.       - 80:80
  14.   space-frontend:
  15.     container_name: space-frontend
  16.     image: space-frontend
  17.     build: 
  18.       context: ./space-frontend
  19.     ports:
  20.       - 4000:80
  21.   space-api:
  22.     container_name: space-api
  23.     hostname: space-api
  24.     image: space-api
  25.     build: 
  26.       context: ./space-api
  27.     ports:
  28.       - 3000:3000
  29.     links:
  30.       - database  
  31.     environment:
  32.       MONGO_INITDB_DATABASE: spaceLocator 
  33.       MONGODB_URI: mongodb://db:27017
  34.     depends_on:
  35.       - database
  36.     volumes:
  37.       - ./db-data/mongo/:/data/database
  38.     networks:
  39.       - node-network
  40.   database:
  41.     container_name: db
  42.     image: mongo
  43.     restart: on-failure
  44.     ports:
  45.       - 27017:27017
  46.     volumes:
  47.       - ./mongodb:/data/database
  48.     networks:
  49.       - node-network  
  50. volumes:
  51.   dbdata6:
  52. networks:
  53.   node-network:
  54.     external: true
  55.     driver: bridge

以及我的反向代理nginx.conf文件

  1. events {
  2.     worker_connections 1024;
  3. }
  4. http {
  5.     server {
  6.         listen 80;
  7.         server_name  127.0.0.1;
  9.         root   /usr/share/nginx/html;
  10.         index  index.html index.htm;
  11.         
  12.         location ~* \.(eot|ttf|woff|woff2)$ {
  13.             add_header Access-Control-Allow-Origin *;
  14.         }
  16.         location / {
  17.             proxy_pass http://space-frontend:80;
  18.             proxy_set_header X-Forwarded-For $remote_addr;
  19.         }
  21.         location /api {
  22.             proxy_pass http://space-api:3000;
  23.             proxy_set_header X-Forwarded-For $remote_addr;
  24.         }
  25.     }
  26. }

有人能指出我做错了什么吗？
我尝试过添加主机名，但它们与容器名称相同。

英文:

I know this question has been asked many times however, none of the solutions have worked for me.

I am trying to dockerize my angular app and node js backend using nginx.

What I have done is that I have created a docker-compose file.
It has three services and nginx.

1: space-frontend

2: space-api

3: mongodb

I am calling frontend and backend by their service name in nginx conf file like http://space-frontend:80 and http://space-api:3000 but I am getting a error in logs

> [emerg] 1#1: host not found in upstream "space-api" in /etc/nginx/nginx.conf:23

and frontend is working fine.
I am unable to understand where I am missing something.

For reference,
My frontend docker file

  1. FROM node:16-alpine AS builder
  2. WORKDIR /app
  3. COPY . .
  4. RUN npm i && npm run build --prod
  5. FROM nginx:alpine
  6. RUN mkdir /app
  7. COPY --from=builder /app/dist/Space-Locator/browser /app
  8. COPY nginx.conf /etc/nginx/nginx.conf

My frontend nginx conf

  1. events {
  2. worker_connections 1024;
  3. }
  4. http {
  5. include /etc/nginx/mime.types;
  7. server {
  8. listen       80;
  9. server_name  localhost;
  10. root /app;
  12. location / {
  13.     index  index.html;
  14.     try_files $uri $uri/ /index.html;
  15. }
  17. error_page   500 502 503 504  /50x.html;
  18. location = /50x.html {
  19.     root   /usr/share/nginx/html;
  20. }
  21. }
  22. }

Backend api docker file

  1. FROM node:14-alpine as build-step
  2. RUN mkdir -p /usr/app
  3. WORKDIR /usr/app
  4. COPY package.*json /usr/app/
  5. RUN npm install
  6. COPY . /usr/app/
  7. EXPOSE 3000
  8. CMD [ "npm", "start" ]

my docker-compose file

  1.     version: "3.8"
  2. services:
  3.   reverse_proxy:
  4.     image: nginx:1.17.10
  5.     container_name: reverse_proxy
  6.     depends_on:
  7.       - space-frontend
  8.       - space-api
  9.       - database
  10.     volumes:
  11.       - ./reverse_proxy/nginx.conf:/etc/nginx/nginx.conf  
  12.     ports:
  13.       - 80:80
  14.   space-frontend:
  15.     container_name: space-frontend
  16.     image: space-frontend
  17.     build: 
  18.       context: ./space-frontend
  19.     ports:
  20.       - 4000:80
  21.   space-api:
  22.     container_name: space-api
  23.     hostname: space-api
  24.     image: space-api
  25.     build: 
  26.       context: ./space-api
  27.     ports:
  28.       - 3000:3000
  29.     links:
  30.       - database  
  31.     environment:
  32.       MONGO_INITDB_DATABASE: spaceLocator 
  33.       MONGODB_URI: mongodb://db:27017
  34.     depends_on:
  35.       - database
  36.     volumes:
  37.       - ./db-data/mongo/:/data/database
  38.     networks:
  39.       - node-network
  40.   database:
  41.     container_name: db
  42.     image: mongo
  43.     restart: on-failure
  44.     ports:
  45.       - 27017:27017
  46.     volumes:
  47.       - ./mongodb:/data/database
  48.     networks:
  49.       - node-network  
  50. volumes:
  51.   dbdata6:
  52. networks:
  53.   node-network:
  54.     external: true
  55.     driver: bridge

and my nginx.conf file for reverse proxy

  1.    events {
  2.     worker_connections 1024;
  3. }
  4. http {
  6.   server {
  7.         listen 80;
  8.         server_name  127.0.0.1;
  10.         root   /usr/share/nginx/html;
  11.         index  index.html index.htm;
  12.         
  13.         location ~* \.(eot|ttf|woff|woff2)$ {
  14.         add_header Access-Control-Allow-Origin *;
  15.         }
  17.         location / {
  18.           proxy_pass http://space-frontend:80;
  19.           proxy_set_header X-Forwarded-For $remote_addr;
  20.         }
  22.         location /api {
  23.             proxy_pass http://space-api:3000;
  24.             proxy_set_header X-Forwarded-For $remote_addr;
  25.         }
  26.     }
  27. }

Can somebody please point to the direction where I am doing wrong?
I have tried adding hostname but they are as same as container-name.

答案1

得分: 0

你需要告诉nginx使用Docker的DNS解析器，在nginx.conf中使用resolver关键字。类似这样：

  1. load_module modules/ngx_http_js_module.so;
  3. worker_processes 4;
  5. events { worker_connections 1024; }
  7. http {
  8.     js_import index.js;
  10.     resolver 127.0.0.11 ipv6=off;

不要以为你的工作完成了 - 在Kubernetes上，你要将127.0.0.11替换为kube-dns.kube-system.svc.cluster.local。

英文:

You need to tell nginx to use dockers DNS resolver, using the resolver keyword in nginx.conf. Something like this:

  1. load_module modules/ngx_http_js_module.so;
  3. worker_processes 4;
  5. events { worker_connections 1024; }
  7. http {
  8.     js_import index.js;
  10.     resolver 127.0.0.11 ipv6=off;

Don't think that your work is done - on Kubernetes you replace 127.0.0.11 with kube-dns.kube-system.svc.cluster.local

答案2

得分: 0

问题是我们必须在相同的网络上运行每个容器。

networks:

  • node-network

我不得不在每个服务中定义这个。然后它就可以正常运行了。
谢谢所有帮助的人 主机在Nginx Docker Compose中未找到上游。

英文:

So guys problem was that we have to run every container on same network.

  1.   networks:
  3.   - node-network

I had to define this in my every service. Then it ran without any problem.
Thank you for everyone who helped 主机在Nginx Docker Compose中未找到上游。

huangapple
  • 本文由 发表于 2023年6月2日 00:42:00
  • 转载请务必保留本文链接：https://go.coder-hub.com/76384047.html
  • docker
  • docker-compose
  • nginx
  • reverse-proxy
匿名

发表评论

匿名网友

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen:

确定