I previously wrote about how Cacti uses rrdtool to store and graph data. Cacti uses templates to define how it interacts with rrdtool as well as how it manages devices. Unfortunately, how objects inherit from these templates varies.
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Cacti is a great tool. I use it for collecting and graphing all kinds of data about my servers and networks. But after using it for so many years, I’ve learned its weaknesses. It is quite easy to make a mistake setting up Cacti that you later come to regret – and cannot fix. Before using Cacti to graph real data, you need to understand how it works.
This is the first in a series of related blog posts about Cacti.
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