Rabbitmq server reports error: unable to perform an operation on node ‘ rabbit@nscczzms ‘. Please see diagnostics information and suggestions below

Step 1: check the rabbitmq service status:

systemctl status rabbitmq-server.service

Viewing rabbitmq error message: rabbitmqctl status

The above problem occurs: modify the hosts file CD/etc VI hosts

127.0.0.1 the name nscczzms// nscczzms must be consistent with the name circled in the picture above.

Then save and exit

Finally, restart rabbitmq: systemctl restart rabbitmq server