@DeepakDonde  I may not be completely clear on what you have tried above. I am not sure what you mean by "completely new process group". The rest-api endpoints used in both commands above are the same except each has a unique process group UUID: 1e373804-0191-1000-e950-856de82e267d <-- worked 01911000-3804-1e37-10a0-827d946513c6 <-- did not work The second throws an exception that implies the process-group with that UUID does not exist.  That uuid needs to be the uuid of the process group in which you are uploading your flow definition.  A flow definition will consist of a Process Group (PG) that normally contains components. I am guessing that the UUID you shared that did not work is some random uuid you created?  When you flow definition is uploaded to the NiFi UI, its PG and components are assigned UUIDs.  You can upload the same flow definition multiple times and each time all components get new UUIDs. NiFi Flow Definitions can only be created by right clicking on a Process Group and selecting "Download flow Definition" from the displayed context menu or via the equivalent rest-api endpoint.  That flow definition is stored as a json file which can later be uploaded to the canvas of the same NiFi or to another NiFi. A flow definition is uploaded only by specifying the process group you want upload the flow definition to and the x and y coordinates at which the flow definition's Process Group will be placed.  It is not possible to upload a flow definition without this valid information. Even a freshly installed NIFi will generate a root process group on first startup.  When you access the UI of a new NiFi install, the blank canvas you are presented with is the root process group and has an assigned UUID (uuid is shown in the "operate" panel in left side of the canvas).   Form that root process group you can add many levels of chid process groups and can upload a flow definition to the root process group or any child process group level. Please help our community thrive. If you found any of the suggestions/solutions provided helped you with solving your issue or answering your question, please take a moment to login and click "Accept as Solution" on one or more of them that helped. Thank you, Matt ... View more

@kleyson  Apache NiFi provides a simple to use UI that facilitates flow based programming through the used of hundreds of available components.   NiFi's primary function is the ability to ingest unstructured data from a large variety of sources, transform, route , and push that data to a variety of destinations. While NiFi certainly has numerous HTTP processor components (ListenHTTP, HandleHTTPRequest, HandleHTTPResponse) that can be added to the canvas to support HTTP based connections into a dataflow, NiFi is so much more then just that.  There are many many ways to ingest data in to NiFi and many many ways to manipulate, modify, generate, split, merge, write, send, etc. the data once it is inside NiFi. The NiFi documentation includes details on all the included components available in the download. Apache NiFi 1.x documentation:  https://nifi.apache.org/docs/nifi-docs/ Apache NiFi 2.x documentation: https://nifi.apache.org/documentation/v2/ There are additional add-on NiFi nars that can add even more components. Please help our community thrive. If you found any of the suggestions/solutions provided helped you with solving your issue or answering your question, please take a moment to login and click "Accept as Solution" on one or more of them that helped. Thank you, Matt ... View more

@Tiger_Name  The encrypt-config toolkit was deprecated and removed in the Apache NiFi 2.0.0 release. https://issues.apache.org/jira/browse/NIFI-13414 It was refactored in 2.0.0-M1 (milestone 1) before it was deprecated and removed completely: https://issues.apache.org/jira/browse/NIFI-12243 Your exception sounds like something was not set correctly with regards to the master key in the bootstrap.conf.  I'd double check to make sure you set that value correctly. Please help our community thrive. If you found any of the suggestions/solutions provided helped you with solving your issue or answering your question, please take a moment to login and click "Accept as Solution" on one or more of them that helped. Thank you, Matt ... View more