The default is defined as rrd4j, but you can change it by adding such a line in your conf/services/runtime.cfg.
What you need to make sure though is that the service is installed at all (add it in your addons.cfg).
The default is defined as rrd4j, but you can change it by adding such a line in your conf/services/runtime.cfg.
What you need to make sure though is that the service is installed at all (add it in your addons.cfg).