python – Celery：socket.error超时

2023年3月28日 389次阅读

我正在使用：

celery==3.1.12
kombu==3.0.19
amqp==1.4.5

芹菜工人开始了：

celery worker --without-gossip --without-heartbeat --without-mingle

芹菜seseings：

CELERY_ALWAYS_EAGER = False
CELERY_EAGER_PROPAGATES_EXCEPTIONS = True
BROKER_URL = 'amqp://guest:guest@127.0.0.1:5672//'
BROKER_CONNECTION_TIMEOUT = 30
CELERY_RESULT_BACKEND = "amqp"
CELERY_TASK_RESULT_EXPIRES = 18000  # 5 hours.
CELERY_RESULT_PERSISTENT = True

有时我会收到此错误：

Traceback (most recent call last):

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 112, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/newrelic-2.18.1.15/newrelic/hooks/framework_django.py", line 492, in wrapper
    return wrapped(*args, **kwargs)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/django_restapi/resource.py", line 143, in __call__
    return self.dispatch(request, self, *args, **kwargs)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/django_restapi/resource.py", line 76, in dispatch
    return target.create(request, *args, **kwargs)

  File "./kavyarnya/api/post_deploy.py", line 110, in create
    process_commit.delay(project.id, commit, post_deploy_call.id)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/celery/app/task.py", line 358, in delay
    return self.apply_async(args, kwargs)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/celery/app/task.py", line 474, in apply_async
    **options)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/celery/app/amqp.py", line 249, in publish_task
    **kwargs

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/messaging.py", line 164, in publish
    routing_key, mandatory, immediate, exchange, declare)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/connection.py", line 470, in _ensured
    interval_max)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/connection.py", line 396, in ensure_connection
    interval_start, interval_step, interval_max, callback)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/utils/__init__.py", line 217, in retry_over_time
    return fun(*args, **kwargs)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/connection.py", line 246, in connect
    return self.connection

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/connection.py", line 761, in connection
    self._connection = self._establish_connection()

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/connection.py", line 720, in _establish_connection
    conn = self.transport.establish_connection()

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/kombu/transport/pyamqp.py", line 115, in establish_connection
    conn = self.Connection(**opts)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/amqp/connection.py", line 136, in __init__
    self.transport = create_transport(host, connect_timeout, ssl)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/amqp/transport.py", line 264, in create_transport
    return TCPTransport(host, connect_timeout)

  File "/usr/local/lib/staging/kava/.envf322d0e225b48a1bb90126f74d73812df3b92994/local/lib/python2.7/site-packages/amqp/transport.py", line 99, in __init__
    raise socket.error(last_err)

error: timed out

RabbitMq有defult设置. https://www.rabbitmq.com/configure.html

/etc/default/rabbitmq-server : `ulimit -n 16384`

兔子日志：

=WARNING REPORT==== 19-Mar-2016::00:02:17 ===
closing AMQP connection <0.30881.4> (127.0.0.1:26762 -> 127.0.0.1:5672):
connection_closed_abruptly

最大套接字数：

# sysctl -a | grep somax 
net.core.somaxconn = 32768

我尝试通过以下方式解决此问题：

>设置BROKER_HEARTBEAT = 10 – 我的情况更糟
>设置BROKER_POOL_LIMIT =无 – 与当前状态无关
>将BOKER_CONNECTION_TIMEOUT设置为10,20,30 – 更大的超时值会带来更少的错误

我假设增加超时值只是隐藏真正的问题.
这个问题的原因是什么,我该如何解决？
谢谢

最佳答案 您尝试处理的请求率是多少？

你能看到超时的运行RabbitMQ的机器上CPU利用率,内存消耗,磁盘IO统计数据会发生什么变化吗？

看起来Rabbit无法足够快地处理连接.

作为一个盲目的猜测我建议增加Erlang VM I / O线程池大小(参见“Erlang VM I / O线程池”部分,这里https://www.rabbitmq.com/networking.html)

也许可以和兔子的“连接Backlog”玩一下(见同一个链接).

总是有可能您没有足够的资源来处理您获得的请求数量,因此您可能希望扩展Rabbit安装.

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