Celery Flask --- 错误：[Errno 111] 连接被拒绝

Question

在完成烧瓶芹菜的基本示例之后（据我所知运行良好），我正在尝试将其集成到我自己的项目中。基本上，我在下面使用这个：

from flask import Blueprint, jsonify, request, session
from flask.views import MethodView
from celery.decorators import task

blueprint = Blueprint('myapi', __name__)

class MyAPI(MethodView):

    def get(self, tag):
        return get_resource.apply_async(tag)

@task(name="get_task")
def get_resource(tag):
    pass

使用与示例中相同的设置，我收到此错误：

Traceback (most recent call last):
  File "/x/venv/lib/python2.7/site-packages/flask/app.py", line 1518, in __call__
    return self.wsgi_app(environ, start_response)
  File "/x/venv/lib/python2.7/site-packages/flask/app.py", line 1506, in wsgi_app
    response = self.make_response(self.handle_exception(e))
  File "/x/venv/lib/python2.7/site-packages/flask/app.py", line 1504, in wsgi_app
    response = self.full_dispatch_request()
  File "/x/venv/lib/python2.7/site-packages/flask/app.py", line 1264, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/x/venv/lib/python2.7/site-packages/flask/app.py", line 1262, in full_dispatch_request
    rv = self.dispatch_request()
  File "/x/venv/lib/python2.7/site-packages/flask/app.py", line 1248, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/x/venv/lib/python2.7/site-packages/flask/views.py", line 84, in view
    return self.dispatch_request(*args, **kwargs)
  File "/x/venv/lib/python2.7/site-packages/flask/views.py", line 151, in dispatch_request
    return meth(*args, **kwargs)
  File "/x/api/modules/document/document.py", line 14, in get
    return get_resource.apply_async(tag)
  File "/x/venv/lib/python2.7/site-packages/celery/app/task/__init__.py", line 449, in apply_async
    publish = publisher or self.app.amqp.publisher_pool.acquire(block=True)
  File "/x/venv/lib/python2.7/site-packages/kombu/connection.py", line 657, in acquire
    R = self.prepare(R)
  File "/x/venv/lib/python2.7/site-packages/kombu/pools.py", line 54, in prepare
    p = p()
  File "/x/venv/lib/python2.7/site-packages/kombu/pools.py", line 45, in <lambda>
    return lambda: self.create_producer()
  File "/x/venv/lib/python2.7/site-packages/celery/app/amqp.py", line 265, in create_producer
    pub = self.app.amqp.TaskPublisher(conn, auto_declare=False)
  File "/x/venv/lib/python2.7/site-packages/celery/app/amqp.py", line 328, in TaskPublisher
    return TaskPublisher(*args, **self.app.merge(defaults, kwargs))
  File "/x/venv/lib/python2.7/site-packages/celery/app/amqp.py", line 158, in __init__
    super(TaskPublisher, self).__init__(*args, **kwargs)
  File "/x/venv/lib/python2.7/site-packages/kombu/compat.py", line 61, in __init__
    super(Publisher, self).__init__(connection, self.exchange, **kwargs)
  File "/x/venv/lib/python2.7/site-packages/kombu/messaging.py", line 79, in __init__
    self.revive(self.channel)
  File "/x/venv/lib/python2.7/site-packages/kombu/messaging.py", line 168, in revive
    channel = channel.default_channel
  File "/x/venv/lib/python2.7/site-packages/kombu/connection.py", line 581, in default_channel
    self.connection
  File "/x/venv/lib/python2.7/site-packages/kombu/connection.py", line 574, in connection
    self._connection = self._establish_connection()
  File "/x/venv/lib/python2.7/site-packages/kombu/connection.py", line 533, in _establish_connection
    conn = self.transport.establish_connection()
  File "/x/venv/lib/python2.7/site-packages/kombu/transport/amqplib.py", line 279, in establish_connection
    connect_timeout=conninfo.connect_timeout)
  File "/x/venv/lib/python2.7/site-packages/kombu/transport/amqplib.py", line 89, in __init__
    super(Connection, self).__init__(*args, **kwargs)
  File "/x/venv/lib/python2.7/site-packages/amqplib/client_0_8/connection.py", line 129, in __init__
    self.transport = create_transport(host, connect_timeout, ssl)
  File "/x/venv/lib/python2.7/site-packages/amqplib/client_0_8/transport.py", line 281, in create_transport
    return TCPTransport(host, connect_timeout)
  File "/x/venv/lib/python2.7/site-packages/amqplib/client_0_8/transport.py", line 85, in __init__
    raise socket.error, msg
error: [Errno 111] Connection refused

-->

我正在使用redis，如果我安装rabbitmq，我会收到另一个错误，但我现在不明白这一点——代理应该是redis，但它没有找到它还是什么？谁能给我更多的线索这里发生了什么？我是否需要导入其他内容等。关键是，除了简单的示例之外几乎没有什么，这对我来说毫无意义。

我能确定的最多的是在 Api 模块中无法访问“芹菜”，当它在应用程序级别尝试将数据放在那里时，那里的 celery 属于一些默认值，因为我指的是redis，所以没有安装。只是一个猜测。我无法将信息导入模块，只是确定从应用程序调用任何“celery”（例如，输出 celery.conf）会导致错误——尽管我可以导入 celery.task。

这是应用程序正在使用的代理配置，直接来自示例：

BROKER_URL = 'redis://localhost:6379/0'
CELERY_RESULT_BACKEND = "redis"
CELERY_REDIS_HOST = "localhost"
CELERY_REDIS_PORT = 6379
CELERY_REDIS_DB = 0

编辑：

如果您想观看演示：https://github.com/thrisp/flask-celery-example

事实证明，在您的设置中设置 BROKER_TRANSPORT = 'redis' 对于我传入的任何内容都很重要（对于我在此处和 git 示例中提出的设置），我不完全确定为什么它不在示例位中，但在我添加的位中，但它是 - 没有这个它想将所有内容转储到默认的 ampq 队列中。

EDIT2：

此外，这是一个相当大的问题，使用即将发布的 Celery 版本在与 Flask 一起使用时简化了 10,000 个问题，使所有这些都变得不必要。

Answer 1

你必须配置 redis 来绑定本地主机。在/etc/redis/redis.conf 中，取消注释

bind 127.0.0.1