I mentioned in previous post that collectd uses rrdtool for saving its data by default. It results .rrd file for each metric, which later can be rendered using very same rrdtool. RRD files are not something most of the people are familiar with and the tool itself isn’t particularly easy to use, so why such an easy to use tool as collectd would choose it?
For a number of reasons. Continue reading “Quick intro to rrdtool”