Django Channels, Docker Compose, Errno 111] 。连接呼叫失败('127.0.0.2', 6379)

Question

我正在按照Django Channels的教程进行学习。https:/channels.readthedocs.ioenlatesttutorialpart_2.html。

我正在使用docker-compose来构建redis服务器。

docker-compose.yml

  redis:
    image: "redis:alpine"

    command: redis-server --requirepass letmein

    ports:
     - "6379:6379"

    volumes:
      - ./redis.conf:/usr/local/etc/redis/redis.conf


    environment:
     - REDIS_REPLICATION_MODE=master

    networks:
      node_net:
        ipv4_address: 127.0.0.2

networks:
  node_net:
    ipam:
    driver: default
  config:
    - subnet: 127.0.0.0/16

当我试图用docker来测试连接时

async_to_sync(channel_layer.send)('test_channel', {'type': 'hello'})

我得到的错误是

`File "<console>", line 1, in <module>
  File "/usr/local/lib/python3.6/site-packages/asgiref/sync.py", line 120, in __call__
    return call_result.result()
  File "/usr/local/lib/python3.6/concurrent/futures/_base.py", line 425, in result
    return self.__get_result()
  File "/usr/local/lib/python3.6/concurrent/futures/_base.py", line 384, in __get_result
    raise self._exception
  File "/usr/local/lib/python3.6/site-packages/asgiref/sync.py", line 180, in main_wrap
    result = await self.awaitable(*args, **kwargs)
  File "/usr/local/lib/python3.6/site-packages/channels_redis/core.py", line 299, in send
    async with self.connection(index) as connection:
  File "/usr/local/lib/python3.6/site-packages/channels_redis/core.py", line 835, in __aenter__
    self.conn = await self.pool.pop()
  File "/usr/local/lib/python3.6/site-packages/channels_redis/core.py", line 73, in pop
    conns.append(await aioredis.create_redis(**self.host, loop=loop))
  File "/usr/local/lib/python3.6/site-packages/aioredis/commands/__init__.py", line 175, in create_redis
    loop=loop)
  File "/usr/local/lib/python3.6/site-packages/aioredis/connection.py", line 113, in create_connection
    timeout)
  File "/usr/local/lib/python3.6/asyncio/tasks.py", line 339, in wait_for
    return (yield from fut)
  File "/usr/local/lib/python3.6/site-packages/aioredis/stream.py", line 24, in open_connection
    lambda: protocol, host, port, **kwds)
  File "/usr/local/lib/python3.6/asyncio/base_events.py", line 794, in create_connection
    raise exceptions[0]
  File "/usr/local/lib/python3.6/asyncio/base_events.py", line 781, in create_connection
    yield from self.sock_connect(sock, address)
  File "/usr/local/lib/python3.6/asyncio/selector_events.py", line 439, in sock_connect
    return (yield from fut)
  File "/usr/local/lib/python3.6/asyncio/selector_events.py", line 469, in _sock_connect_cb
    raise OSError(err, 'Connect call failed %s' % (address,))
ConnectionRefusedError: [Errno 111] Connect call failed ('127.0.0.2', 6379)`

忠告请见 Docker [Errno 111] 连接调用失败('127.0.0.1', 6379) 描述改变 127.0.0.1:6379 到 redis:6379. 然而不清楚这种变化应该发生在哪里。

在我的 settings.py ?

`CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            "hosts": [('127.0.0.2', 6379)],
        },
    },
}`

或在我 docker-compose.yml还是其他地方？先谢谢你:)

Answer 1

你有 '127.0.0.2' 而不是 '127.0.0.1' 为本地主机