> MRTG and RRD automatically scale data to keep the file size on disk > small. How can I increase the size of the RRD file on creation so that > it stores six (6) months of 5 minute data vs the standard one month > resolution?
Actually, the default .rrd file generated by MRTG will store approximately 2 days of 5-min resolution, 2 weeks of 30-min resolution, 2 months of 2-hour resolution, and 2 years of 1-day resolution (under older versions of MRTG, the default used to be closer to 1d/1w/1m/1y. I'm sure someone can give the precise numbers) You can change the default by using the RRDRowCount: option in the .cfg file, but you must do this BEFORE the .rrd files are generated; IE, before the first run of MRTG on the file. The default is about 800 for 2 days (if your interval is 5min - multiply by 5 if it is 1min). If you want to extend this to 6 months, then you will need to multiply by 90 - 72000 or so. You will get some rather large .rrd files. You will also need to have a way to display this extra data as the default tools will not do so because they do not expect it to be there. The routers2 frontend will go back 2 days if possible (as in the default configuration) but not further. However, an alternative with routers2 is RRD Archiving. This stores a copy of the .rrd files into a separate location daily, and routers2 can then explore this archive. This will give you similar functionality to what you want - we use it here to preserve 5-min resolution for a months and 30-min resolution for a year. Steve _______________________________________________ mrtg mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/mrtg
