Report an error:
Starting rabbitmq-server: FAILED – check /var/log/rabbitmq/startup_{log, _err}
This way
Check the startup_log:
ERROR: epmd error for host 192: badarg (unknown POSIX error)
like this

Solution:
1. Turn off SELINUX:
Enter the command: vi /etc/selinux/config
Modify: SELINUX=disabled
2. Enter the command: vi /etc/rabbitmq/rabbitmq-env.conf
Add a line: NODENAME=rabbit@localhost
Start again successfully.
Enter the command: service rabbitmq-server start

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