Basically, after setting up a configuration, Message Broker in Linux system can be run directly using command line. However there is also a way to run it as a daemon. Below is a short guide how to do it based on the CentOS 8.3.2011.
As root go to directory /etc/systemd/system.
Create a file which name would match following pattern: servicename.service where servicename is a unique name the service, for instance messagebroker.service
The content of this file might be following:
...
Then running of such defined service is controlled with systemctl