you can use Grafana to monitor the server, they already have predefined dashboard template.  More details https://pierrevillard.com/2017/05/16/monitoring-nifi-ambari-grafana/ https://grafana.com/grafana/dashboards/11387-nifi-monitoring/ ... View more

@soc88 Some suggestions so community can better help you: Show screen shots of processor's configuration tab.  We need to see the properties and how you have setup the processor. For processors with errors (red boxes), you can click the box to see full error. We need to see the errors to suggest solutions. Look in nifi-app.log for these errors if you need more verbose errors than shown in the UI.  You can also set the processor log level to see more in the UI.  For example, set it to DEBUG and test again.   I would suspect your error could be the configuration of the processor, but would more suspect opensearch permissions on receiving end and less about the version of NIFI. ... View more