How to solve the issue of being unable to access RabbitMQ when starting Docker?

If you are unable to access RabbitMQ after starting it in Docker, it may be due to the following reasons:

1. Network configuration issue: Make sure the network settings of Docker container and host are correct, you can try starting the container in host network mode so that it shares the network stack with the host.
2. Port mapping issue: Make sure to correctly map RabbitMQ’s port to the host, such as mapping port 5672 of RabbitMQ to port 5672 of the host.
3. Firewall issue: Review the firewall configuration of both the host and Docker containers to ensure communication is possible through the specified ports.
4. RabbitMQ configuration issue: Verify that the RabbitMQ configuration file is set up correctly to listen on the specified IP address and port.
5. Security group configuration: When deploying Docker containers on a cloud server, make sure to check the security group settings to ensure that specified ports can be accessed from the outside.

If none of the above methods work, you can try checking the logs of the Docker container to understand the specific error message and better pinpoint the issue.