docker 中的 django-redis 连接错误 [英] django-redis connection error inside docker

问题描述

django 视图.py

django views.py

import redis
import jwt
from access import utils
import os
redis_url = os.environ['REDIS_URI']

R = redis.StrictRedis(redis_url)

def set(request):
    R.set('foo', 'bar')
    return JsonResponse({"code":200,"msg":"success"})

docker-compose

docker-compose

version: "3"

services:
  rango:
    container_name: rango
    build: ./
    command: python backend/manage.py runserver 0.0.0.0:8000
    # command: npm start --prefix frontend/rango-frontend/
    working_dir: /usr/src/rango
    environment:
      REDIS_URI: redis://redis_db:6379
    ports:
      - "8000:8000"
    tty: true
    links:
      - elasticsearch
      - node
      - redis

  #elastic search
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:6.5.0
    ports:
      - "9200:9200"

  #node
  node:
    image: node:10.13.0

  #redis
  redis:
    image: redis
    environment:
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - "6379:6379"

在这里，我从 docker 内部的 django 连接 redis.它给了我拒绝连接的例外.请查看我的代码并在下面分享截图

here i am connecting redis from django inside docker. it is giving me exceptions connexctions refused. Please have a look into my code and shared screenshot below

推荐答案

默认情况下，docker compose 使用与容器名称相同的主机名使容器可被发现.因此，您的 redis 容器可以通过主机名 redis 发现.但是，您的 Django 容器使用的是主机名 redis_db.

By default, docker compose makes containers discoverable with a hostname identical to the container name. Your redis container is thus discoverable via the hostname redis. However, your Django container is using the hostname redis_db.

更新您的 docker-compose.yml 并更改 REDIS_URI 以引用正确的主机名:

Update your docker-compose.yml and change the REDIS_URI to reference the correct hostname:

REDIS_URI: redis://redis:6379

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