In this recipe, we'll explore how to go beyond the default network map, discussed in Chapter 8, Managing Network Layout, to get a lot of visualization power with the NagVis extension. NagVis can use the MK Livestatus backend to build custom maps in various styles.
NagVis is most likely of interest to you if you're interested in visualizing Nagios data more extensively, particularly if you're having problems with the scalability of the included Nagios Core status map. The default status map works well for smaller networks but can struggle with rendering larger ones in a timely fashion.
A complete survey of NagVis' functions would not be possible in one recipe, but this recipe will walk you through downloading, installing, and configuring the extension to give you a simple automap in order to get you started.