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Q: How can I send data from one NiFi instance to another?
Q: When setting up site-to-site with a remote process group and networking through firewalls, are the TCP connections one-way, from source node, where the graph is running to the remote process group's node only, or are bidirectional TCP connections required? The reason I ask is I’m encountering problems trying to connect from a data center that has an open outbound firewall, but allows no incoming connections. On the target node, there is no indication in the nifi-app.log of the source node even attempting to connect (not sure if debug logging is required).
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Clustering
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Q: I set up a two-node cluster, but after I disconnected one node, did some work in the cluster, and tried to reconnect the second node, I got the error "Failed to connect node to cluster because local flow is different than cluster flow.” I deleted the flow.xml.gz file from the node I’m attempting to add and then restarted it, but I still had the same issue. How do I resolve this?
Q: I am evaluating NiFi for a large project to see if NiFi would fit as the main data collector. The project I am working on would require retrieving several hundreds of millions of files per day (hundreds of TB per day) so my first question is how to achieve distribution/clustering with NiFi, if that's possible.
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