Referencing Custom Properties via nifi.properties
Identify one or more sets of key/value pairs, and give them to your system administrator.
Once the new custom properties have been added, ensure that the
nifi.variable.registry.properties field in the nifi.properties file is updated with the custom properties location.
NiFi must be restarted for these updates to be picked up.
For more information, see the System Administration documentation in the Reference section.