Jim Sher <[email protected]> wrote: > I'm using cron to run a script every 5 minutes to get some values and update > the RRD files and then draw the graphs. > My script to populate the RRAs in the RRD: <snip> > But when I view the graphs (all of them are like the one below), all the > values are not numbers (nan).
Two common problems : 1) How long did you let your collection script run for ? One update is *NOT* sufficient to create any known values in the database. 2) Post the commands used to create the RRD files. A common mistake is to make heartbeat only 300s and update "every 5 minutes". "Every 5 minutes" often isn't "every 300s", especially when using "N" as the timestamp. If two updates are 301s apart, a heartbeat of 300s means "unknown" data will be stored. Try "rrdtool fetch" to see what's stored in the database - it's easier than trying to work out if it's the data or the graphing that's causing the problem. For reference, see http://rrdtool.vandenbogaerdt.nl In particular, "Rates, normalizing and consolidating" should make things a lot clearer. _______________________________________________ rrd-users mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
