Collectd

'collectd is a daemon which collects system performance statistics periodically and provides mechanisms to store the values in a variety of ways, for example in RRD files.'

https://collectd.org/

=Misc=
 * Proxy InfluxDB : https://github.com/hoonmin/influxdb-collectd-proxy
 * Grafana + InfluxDB + Collectd : http://vincent.composieux.fr/article/grafana-monitor-metrics-collected-by-collectd-into-influxdb