@Harish S If you run the klist command as the user running NiFi, what do you see? ... View more

@Raj B I would agree. Are you running the curl commands on the same system with the NiFi instance you are running the curl command against? Try running the curl commands from a remote system that can reach the NiFi instance. Also, make sure you are not logged into the NiFi instance, via the UI, while you are running the curl commands, I have found that can cause some issues. ... View more

@Raj B Try something like this: curl 'https://<nifi-server>:8077/nifi-api/system-diagnostics' -H 'Content-Type: application/x-www-form-urlencoded; charset=UTF-8' -H 'Authorization: Bearer eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJjbj1SUkJvbGxhLG91PURhdGEgTWFuYWdlbWVudCxvdT1QT0Usb3U9UGVvcGxlLGRjPW1kYW5kZXJzb24sZGM9ZWR1IiwiaXNzIjoiTGRhcFByb3ZpZGVyIiwiYXVkIjoiTGRhcFByb3ZpZGVyIiwicHJlZmVycmVkX3VzZXJuYW1lIjoiUlJCb2xsYSIsImtpZCI6MzMsImV4cCI6MTQ5MjA5OTcyNiwiaWF0IjoxNDkyMDkyNTI2fQ.xIViD0Ea_fok6qV5ghnf65FPbO9Reh_MQxVG2Q1krl4%' --compressed --insecure --tlsv1.2 In addition, make sure the user you are accessing the UI with has the correct policies to access to the system-diagnostics. ... View more

@Gu Gur No, you only have to configure the two new nodes to be part of the cluster that is already running. Make sure to configure to use the same root node in zookeeper, set this property nifi.zookeeper.root.node, to the same values that the other three nodes are using, and of course configure the cluster node properties. ... View more

@Raj B I have found, depending on some of the default system settings, that I need an additional flag on the subsequent curl commands after getting the token. Try adding --tlsv1.2 after the compressed and insecure flags. Also, you will still need the Content-type information on subsequent curl commands. ... View more