docker nginx konnte keine Verbindung mit Web-Container herstellen

Question

Mein Docker-Nginx-Container konnte nicht mit dem Gunicorn-Container verbunden werden. Docker Protokolle komponieren aussieht,

dj  | [2017-09-16 12:37:14 +0000] [22] [INFO] Starting gunicorn 19.7.1 
dj  | [2017-09-16 12:37:14 +0000] [22] [DEBUG] Arbiter booted 
dj  | [2017-09-16 12:37:14 +0000] [22] [INFO] Listening at: http://127.0.0.1:8000 (22) 
dj  | [2017-09-16 12:37:14 +0000] [22] [INFO] Using worker: sync 
dj  | [2017-09-16 12:37:14 +0000] [25] [INFO] Booting worker with pid: 25 
dj  | [2017-09-16 12:37:14 +0000] [22] [DEBUG] 1 workers 
ng  | 2017/09/16 12:37:22 [error] 8#8: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.20.0.1, server: localhost, request: "GET /api HTTP/1.1", upstream: "http://127.0.0.1:8000/api/v1", host: "localhost" 
ng  | 172.20.0.1 - - [16/Sep/2017:12:37:22 +0000] "GET /api HTTP/1.1" 502 537 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/52.0.2743.116 Chrome/52.0.2743.116 Safari/537.36" "-" 
ng  | 2017/09/16 12:37:31 [error] 8#8: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.20.0.1, server: localhost, request: "GET /admin HTTP/1.1", upstream: "http://127.0.0.1:8000/api/admin", host: "localhost" 
ng  | 172.20.0.1 - - [16/Sep/2017:12:37:31 +0000] "GET /admin HTTP/1.1" 502 537 "-" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/52.0.2743.116 Chrome/52.0.2743.116 Safari/537.36" "-" 

Wenn ich eine Locke Anfrage innerhalb django Behälter machen, ist es die entsprechende HTML-Text zeigt.

$ docker-compose exec api bash 
root@e29e3756916c:/code# curl http://127.0.0.1:8000 
root@e29e3756916c:/code# curl http://127.0.0.1:8000/api/v1 
root@e29e3756916c:/code# curl -L http://127.0.0.1:8000/api/v1 
{"_type":"document","_meta":{"url":"http://127.0.0.1:8000/api/v1/","title":"Backend APIs"},"auth":{"convert-token":{"create":{"_type":"link","url":"/api/v1/auth/convert-token/","action":"post","description":"Implements an endpoint to convert a provider token to an access token\n\nThe endpoint is used in the following flows:\n\n* Authorization code\n* Client credentials"}},"revoke-token":{"create":{"_type":"link","url":"/api/v1/auth/revoke-token/","action":"post","description":"Implements an endpoint to revoke access or refresh tokens"}},"sign_in":{"create":{"_type":"link","url":"/api/v1/auth/sign_in/","action":"post","encoding":"application/json","fields":[{"name":"username","required":true,"location":"form","schema":{"_type":"string","title":"Username","description":""}},{"name":"password","required":true,"location":"form","schema":{"_type":"string","title":"Password","description":""}}]}},"sign_up":{"create":{"_type":"link","url":"/api/v1/auth/sign_up/","action":"post","encoding":"application/json","fields":[{"name":"first_name","location":"form","schema":{"_type":"string","title":"First name","description":""}},{"name":"last_name","location":"form","schema":{"_type":"string","title":"Last name","description":""}},{"name":"email","location":"form","schema":{"_type":"string","title":"Email address","description":""}},{"name":"username","required":true,"location":"form","schema":{"_type":"string","title":"Username","description":"Required. 150 characters or fewer. Letters, digits and @/./+/-/_ only."}},{"name":"password","required":true,"location":"form","schema":{"_type":"string","title":"Password","description":""}},{"name":"is_active","location":"form","schema":{"_type":"boolean","title":"Active","description":"Designates whether this user should be treated as active. Unselect this instead of deleting accounts."}}]}},"token":{"create":{"_type":"link","url":"/api/v1/auth/token/","action":"post","description":"Implements an endpoint to provide access tokens\n\nThe endpoint is used in the following flows:\n\n* Authorization code\n* Password\n* Client credentials"}}}}root@e29e3756916c:/code# 
root@e29e3756916c:/code# 

nginx.conf

server { 
    listen  80; 
    server_name localhost; 

    #charset koi8-r; 
    #access_log /var/log/nginx/host.access.log main; 

    #error_page 404    /404.html; 

    # redirect server error pages to the static page /50x.html 
    # 
    error_page 500 502 503 504 /50x.html; 
    location = /50x.html { 
     root /usr/share/nginx/html; 
    } 

    proxy_force_ranges  on; 
    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 $http_x_forwarded_proto; 

    location /admin { 
    proxy_pass    http://127.0.0.1:8000/api/admin; 
    } 
    location /api { 
    proxy_pass    http://127.0.0.1:8000/api/v1; 
    } 
    location /oauth { 
    proxy_pass    http://127.0.0.1:8000/api/oauth; 
    } 
    location /static { 
    proxy_pass    http://127.0.0.1:8000/static; 
    } 
    location/{ 
    root /usr/share/nginx/html; 
    index index.html index.htm; 
    try_files $uri $uri/ /index.html; 
    } 
} 

Dockerfile für nginx Behälter ist,

FROM nginx:latest 

#RUN apt-get update 

ADD ./static /usr/share/nginx/html 

ADD nginx.conf /etc/nginx/conf.d/default.conf 

ENV NGINX_PORT 80 

EXPOSE 80 

CMD /bin/bash -c "nginx -g 'daemon off;'" 

docker-compose.yaml

version: '2' 
services: 
    nginx: 
    build: ./nginx 
    container_name: ng 
    ports: 
     - "80:80" 
    #volumes: 
    # - ./src:/src 
    # - ./config/nginx:/etc/nginx/conf.d 
    depends_on: 
     - api 
    links: 
     - api 
    volumes_from: 
     - api 
    api: 
    build: ./s2s_api 
    container_name: dj 
    command: bash ./wait_for_db.sh 
    restart: always 
    depends_on: 
     - db 
    ports: 
     - "8000:8000" 
    tty: true 
    links: 
     - db:mysql 

    db: 
    image: mysql 
    container_name: db 
    command: mysqld --user=root --verbose 
    volumes: 
     - ./dbcreation.sql:/tmp/dbcreation.sql 
     - ./import.sh:/tmp/import.sh 
    ports: 
     - "3306:3306" 
    restart: always 
    environment: 
     MYSQL_DATABASE: "S2S" 
     MYSQL_USER: "root" 
     MYSQL_PASSWORD: "avi" 
     MYSQL_ROOT_PASSWORD: "avi" 
     MYSQL_ALLOW_EMPTY_PASSWORD: "yes" 
     DB_PORT: 3306 
     DB_HOST: db 

wait_for_db.sh

Answer 1

Sie Problem ist offensichtlich aus den Protokollen.

dj  | [2017-09-16 12:37:14 +0000] [22] [INFO] Listening at: http://127.0.0.1:8000 (22) 
ng  | 2017/09/16 12:37:22 [error] 8#8: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.20.0.1, server: localhost, request: "GET /api HTTP/1.1", upstream: "http://127.0.0.1:8000/api/v1", host: "localhost" 

So gibt es zwei Probleme und beide von ihnen bei 127.0.0.1. In Ihrem dj Behälter sollen Sie gunicorn auf 0.0.0.0:8000 ausgeführt werden, da die Anforderung wird von dem nginx Behälter weitergeleitet werden, und es ist Außenbehälter

127.0.0.1 in jedem Behälter Punkte auf den Behälter Schleife django selbst zurück. Jetzt, wenn Sie proxy_pass in Nginx zu 127.0.0.1:8000, erwartet Nginx etwas in demselben Container an Port 8000 ausgeführt werden. So funktioniert es nicht. Sie müssen es in den Namen des Dienstes ändern, den Sie in docker-compose verwendet haben. Unter der Annahme, es war api, sollten Sie

proxy_pass    http://api:8000/api/oauth; 

auch auf einer Seite verwenden notem sollten Sie keine Proxy-Pass statische Dateien zu Gunicorn, sollten sie selbst es zeigt den gleichen Fehler