Systemd is process manager that’s built into many popular Linux distributions.
To run multiple workers under systemd, you’ll first need to create a unit file.
We can name this file
rqworker@.service, put this file in
directory (location may differ by what distributions you run).
If your unit file is properly installed, you should be able to start workers by
systemctl start email@example.com,
systemctl start firstname.lastname@example.org
from the terminal.
You can also reload all the workers by invoking
systemctl reload rqworker@*.
You can read more about systemd and unit files here.