Briefly review how to use mysql-agent w/ OpenNMS. Present an alternative using SNMP's pass_persist protocol. Walk through an example on how to add a new variable and it's corresponding chart in OpenNMS
OpenTSDB is an open-source, distributed time series database designed to monitor large clusters of commodity machines at an unprecedented level of granularity. OpenTSDB enables operations teams to keep track in real-time of all the metrics exposed by operating systems, applications and network equipment, and makes the data easily accessible.