Default streams

The Formant agent ingest several default telemetry streams, containing information about the host, agent, and ROS state (if applicable).

Stream alias	Stream name	Description
CPU	$.host.cpu	A numeric set stream with CPU utilization percentage and 1 minute load average.
Memory	$.host.memory	A numeric set stream with memory utilization percentage and remaining memory available.
Network	$.host.network	A numeric set stream with the total host transmit and receive rate, in Mbps.
Disk	$.host.disk	A numeric set stream with
Location	$.host.geoip	An approximate location stream based on a geoIP lookup of the host.
Agent Buffer	$.agent.buffer	A numeric set stream with the percent utilization of each of the four agent telemetry data buffers.
Health	$.agent.health	A health stream indicating that an agent is online.
N/A	$.ros.node_online	A bitset indicating all online ROS nodes. Will only populate if a roscore is running on the host and accessible by the Formant agent.