Question

我正在尝试将Pika客户端与RabbitMQ服务器连接起来。它们都在不同的docker镜像上，并且它们位于同一个docker网络上。我将我的网络设置为

docker network create my_first_net

我正在运行RabbitMQ图像rabbitmq为

docker run -d --network my_first_net --hostname rabbitmqhost  -p 35672:15672 -p 45672:5672 rabbitmq

我正在运行Pika图像ms2-1作为

docker run --network my_first_net --hostname rabbitmq ms2-1

以下是pika-client ms2.py的代码：

import pika

exchange = 'gateway_exchange'

myName = 'microservice2'

myKey = '#.ms2.#'
gwKey = 'gw'

credentials = pika.PlainCredentials('guest', 'guest')
parameters = pika.ConnectionParameters('rabbitmq', 5672, '/', credentials)

def send(key, message):
    send_conn = pika.BlockingConnection(parameters)
    send_ch = send_conn.channel()

    send_ch.exchange_declare(exchange=exchange,
                             exchange_type='topic')

    send_ch.basic_publish(exchange=exchange,
                          routing_key=key,
                          body=message)
    print(" [x] Sent %r:%r" % (key, message))
    send_conn.close()

def receive():
    connection = pika.BlockingConnection(parameters)
    channel = connection.channel()
    channel.exchange_declare(exchange=exchange,
                             exchange_type='topic')

    result = channel.queue_declare(exclusive=True)
    queue_name = result.method.queue

    binding_key = myKey
    channel.queue_bind(exchange=exchange,
                       queue=queue_name,
                       routing_key=binding_key)

    print(' [*] Waiting for messages. To exit press CTRL+C')

    def callback(ch, method, properties, body):
        print(" [x] Received %r:%r" % (method.routing_key, body))
        send('Response-from-' + myName + '-to-.' + gwKey, body)

    channel.basic_consume(callback,
                          queue=queue_name,
                          no_ack=True)
    channel.start_consuming()

if __name__ == "__main__":
    receive()

当我尝试运行pika图像时出现以下错误

  Traceback (most recent call last):
  File "ms2.py", line 61, in <module>
    receive()
  File "ms2.py", line 36, in receive
    connection = pika.BlockingConnection(parameters)
  File "/usr/local/lib/python2.7/dist-packages/pika/adapters/blocking_connection.py", line 374, in __init__
    self._process_io_for_connection_setup()
  File "/usr/local/lib/python2.7/dist-packages/pika/adapters/blocking_connection.py", line 414, in _process_io_for_connection_setup
    self._open_error_result.is_ready)
  File "/usr/local/lib/python2.7/dist-packages/pika/adapters/blocking_connection.py", line 468, in _flush_output
    raise exceptions.ConnectionClosed(maybe_exception)
pika.exceptions.ConnectionClosed: Connection to 172.18.0.3:5672 failed: [Errno 111] Connection refused

当我执行172.18.0.2时，RabbitMQ容器的IP地址为docker inspect，当我在容器内执行68.50.13.82时，它是curl ifconfig.me。我确认容器正在使用`netstat -ap tcp |监听端口5672 grep -i＆＃34;听＆＃34;

我认为Errno 111与身份验证错误有关，但我无法连接到我的计算机的任何一个IP地址。

解决此问题的下一步应该是什么？

编辑：我意识到我在运行RabbitMQ服务器时没有添加--name标志，所以我删除了那个容器并开始了一个新的容器：

docker run -d --network my_first_net --hostname rabbitmqhost --name rabbitmq -p 15672:15672 -p 5672:5672 rabbitmq

但现在我收到了错误：

Traceback (most recent call last):
  File "ms2.py", line 61, in <module>
    receive()
  File "ms2.py", line 36, in receive
    connection = pika.BlockingConnection(parameters)
  File "/usr/local/lib/python2.7/site-packages/pika/adapters/blocking_connection.py", line 374, in __init__
    self._process_io_for_connection_setup()
  File "/usr/local/lib/python2.7/site-packages/pika/adapters/blocking_connection.py", line 414, in _process_io_for_connection_setup
    self._open_error_result.is_ready)
  File "/usr/local/lib/python2.7/site-packages/pika/adapters/blocking_connection.py", line 466, in _flush_output
    raise maybe_exception
socket.gaierror: [Errno 8] nodename nor servname provided, or not known

Answer 1

问题正在发生，因为您在运行pika容器时重新使用相同的主机名

docker run --network my_first_net --hostname rabbitmq ms2-1

您不应该设置与rabbitmq容器名称相同的主机名。我跑了相同的步骤，我能够连接

Answer 2

我遇到了同样的问题。通过调整参数＆＃34; socket_timeout ＆＃34;我能摆脱这个问题。参数说明为here

以下是代码片段，它将socket_timeout设置为15秒：

连接= pika.BlockingConnection（pika.ConnectionParameters（主机=＆＃39; XX.XX.XX.XX＆＃39;，socket_timeout = 15，凭证=凭证））

xx.xx.xx.xx：放置您的主机IP。

pika.exceptions.ConnectionClosed：连接到172.18.0.3:5672失败：[Errno 111]连接被拒绝

2 个答案: