You can download the NiFi application log from the CDF Deployment Manager to use it
This feature allows you to download the NiFi application
log that is currently being written. As the log file is rotated and the old file is
archived once the file size reaches 10 MB, this is the theoretical maximum you can
download using this method. For information on downloading archived log files, see
Diagnostic bundle collection.
You need DFFlowAdmin permission to perform this
The current NiFi application log is downloaded to your
computer in tar.gz format.
On the Dashboard select the deployment for which you
want to download the NiFi application log.
You are redirected to the Deployment Manager