Controller Services are shared services that can be used by reporting tasks, processors, and other services to utilize for configuration or task execution.
note
Controller Services defined on the controller level are limited to reporting tasks and
other services defined there. Controller Services for use by processors in your dataflow
must be defined in the configuration of the root process group or sub-process group(s)
where they will be used.
note
If your NiFi instance is secured, your ability to view and add Controller Services is
dependent on the privileges assigned to you. If you do not have access to one or more
Controller Services, you are not able to see or access it in the UI. Access privileges can
be assigned on a global or Controller Service-specific basis (see
Accessing the UI with Multi-Tenant Authorization
for more information).
