pika.exceptions.AMQPConnectionError

when I want to connect to rabbitmq by Pika in django project, I get this error:

File "/code/auth-service/utils/consumers.py", line 15, in <module>
     connection = pika.BlockingConnection(parameters)
   File "/usr/local/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 360, in __init__
    self._impl = self._create_connection(parameters, _impl_class)
  File "/usr/local/lib/python3.8/site-packages/pika/adapters/blocking_connection.py", line 451, in _create_connection
     raise self._reap_last_connection_workflow_error(error)
 pika.exceptions.AMQPConnectionError

my code is:

connection = pika.BlockingConnection(pika.ConnectionParameters(host='rabbitmq'))

all my projects run by docker-compose.yml file I appreciate for any help to solving this problem

[pra-dan]

On MAC, providing localhost leads to this error; instead explicitly providing 127.0.0.1 works as

connection = pika.BlockingConnection(pika.ConnectionParameters('127.0.0.1'))

[jesmaelnezhad]

I had this problem, and in my case, the problem was that there is a time gap between RabbitMQ start and when it’s ready to accept connections. So my problem was simply solved by waiting 30 seconds before trying to connect (I was connecting from a container that would start right after RabbitMQ’s container).