In this chapter, you have learned quite a bit about the RRDtool graph generation features.
Specifically, we have covered how to create some basic graphs using the RRDtool as well as adding advanced features such as threshold lines and color changes based on the threshold. You have briefly covered the concept of adding a device to Cacti and assigning graphs and interface graphs to it. Finally, you have created a new Cacti tree containing sub-tree items and the previously added device.
You now have a running Cacti server, polling and graphing at least one device.
In the next chapter, you will learn how to create your own Cacti templates, where you can directly apply everything you have learned here.
