Hi Andrew, thanks for the tutorial. It was very useful. It's strange that the official nifi-registry documentation doesn't cover any of this. Anyway, I feel I should add a missing step to the instructions.   Chances are, the "CN=localhost,OU=nifi" is not going to be valid in real-world scenarios. To figure out what exactly the user name should be, you can check the nifi-app.log where you will see a message like this:   org.apache.nifi.registry.client.NiFiRegistryException: Error retrieving flow snapshot: Unknown user with identity 'CN=host1, OU=ACME, O=ACME, L=Canberra, ST=Australian Capital Territory, C=AU'. Contact the system administrator.   Simply use that identity instead of "CN=localhost,OU=nifi". ... View more