Is it Elastalert? No – it’s NiFi!!

One common requirement for users of Elasticsearch is to have automatic alerts sent out whenever some query gets matched, or when some other condition gets satisfied. In fact, Yelp have come up with a python-based solution for this in the form of Elastalert, which at time of writing, is extremely popular with over 5.5K stars … Continue reading Is it Elastalert? No – it’s NiFi!!

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Consuming Netflow using NiFi

The problem Several network devices (especially Cisco) tend to use netflow for auditing network connections. It would be useful to log these connections in a structured data store (Elasticsearch is my data store of choice). Alternative Solutions Using the elasticsearch netflow module: https://www.elastic.co/guide/en/logstash/current/netflow-module.htmlThis works well right out of the box, and supports all netflow versions. … Continue reading Consuming Netflow using NiFi