Recently for a client I explored integrating nifi with Graylog. There is an AWS EC2 image for a full graylog install with the documentation for this to be found here http://docs.graylog.org/en/1.3/pages/installation/aws.html
- Configure a GELF HTTP connector to these settings http://docs.graylog.org/en/1.3/pages/sending_data.html
- Make a Python Script generating Dummy JSONS '{"short_message":"CHRIS HERE", "host":"example.org", "facility":"test", "_foo":"bar"}'
- Have a nifi HTTP post processor pointed at the Graylog input
- Confirm messages have been received by graylog
