NiFi data

Data and metadata in NiFi is intended to be transient, and depends on the state of the flows in NiFi. However, NiFi can be configured to keep metadata and data in certain directories, and those directories can be backed up as seen fit. For example, in the nifi.properties file, changing

nifi.flow.configuration.file=/opt/nifi/data/conf/flow.xml.gz

will have NiFi store its flows in /opt/nifi/data/conf/flow.xml.gz.

With a default Kylo installation, NiFi is configured to put all of its flows, templates, data in the content repository, data in the flowfile repository, and data in the provenance repository in /opt/nifi/data. For more information about these configurations, the NiFi system administrator’s guide is the authority.

https://nifi.apache.org/docs/nifi-docs/html/administration-guide.html