Flow Support Horizon supports receiving, decoding, and persisting flow information sent via Netflow v5, Netflow v9, IPFIX, and sFlow. While flows offer a great breadth of information, the current focus of the support in Horizon is aimed at: Network diagnostic: viewing the top protocols and top talkers within the context of a particular network interface. Forensic analysis: persisting the flows for long-term storage. How it works At a high level: Telemetryd receives and decodes flows on both Horizon and Minion. Telemetryd adapters convert the flows to a canonical flow model and dispatch these to the flow repository. The flow repository enriches the flows and persists them to Elasticsearch: Flows are tagged with an application name via the classification engine. Metadata related to associated nodes (such as IDs and categories) are also added to the flows. The REST API supports generating both summaries and time series data from the flows stored in the flow repository. Use OpenNMS Helm to visualize the flow data using the flow datasource that interfaces with the Horizon REST API. Alarm History Setup