Telemetryd Table 1. Telemetryd configuration file overview File Description Reload Event Restart Required telemetryd-configuration.xml Configure telemetry listeners and adapters. yes no telemetryd-adapters/*.groovy Groovy scripts for processing telemetry data. yes no org.opennms.features.flows.classification.cfg Rules for classifying flow data. yes no org.opennms.features.flows.persistence.elastic.cfg Configuration for offloading flow data to Elasticsearch. no yes org.opennms.features.flows.persistence.kafka.cfg Optional configuration for forwarding flow data to a Kafka topic. no yes elastic-credentials.xml Credentials for connecting to Elasticsearch nodes. no no Syslogd Trapd