Graphite is a highly scalable real-time graphing system. We use it to graph all sorts of metrics. Basically, you write an application that collects numeric time-series data that you are interested in graphing, and send it to Graphite’s processing backend, carbon, which stores the data in Graphite’s specialized database. The data can then be visualized through graphite’s web interfaces. This tutorial expects that you are using a RHEL/CentOS based server.