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flow.xml.gz: Everything the DFM puts onto the FlexFiles User Interface canvas is written, in real time, to one file called the flow.xml.gz. This file is located in the FlexFiles/conf directory by default. Any change made on the canvas is automatically saved to this file, without the user needing to click a "save" button. In addition, FlexFiles automatically creates a backup copy of this file in the archive directory when it is updated. You can use these archived files to rollback flow configuration. To do so, stop FlexFiles, replace flow.xml.gz with a desired backup copy, then restart FlexFiles. In a clustered environment, stop the entire FlexFiles cluster, replace the flow.xml.gz of one of nodes, and restart the node. Remove flow.xml.gz from other nodes. Once you confirmed the node starts up as a one-node cluster, start the other nodes. The replaced flow configuration will be synchronized across the cluster. The name and location of flow.xml.gz, and auto archive behavior are configurable. See the System Administrator’s Guide for NiFi's Core Properties section for further details.