> rrdtool info templog.rrd ... > ds[internal].type = "GAUGE" > ds[internal].min = -1.0000000000e+01 > ds[internal].max = 5.0000000000e+01 ... > ds[external].type = "GAUGE" > ds[external].min = -2.0000000000e+01 > ds[external].max = 5.0000000000e+01
OK, so your RRD file is correctly configured to allow from -20 to +50 as valid values for the internal/external DS. > And when i try to fetch info, i have this: > sudo bash ./rrdtoolFetch.sh > internal external > 1448221500: nan nan > 1448221800: nan nan > 1448222100: nan nan > 1448222400: nan nan > 1448222700: nan nan > 1448223000: nan nan > 1448223300: nan nan > 1448223600: nan nan > 1448223900: nan nan > 1448224200: 2.1682617188e+01 9.7062734375e+00 > 1448224500: 2.1899166667e+01 9.8750000000e+00 > 1448224800: 2.2098750000e+01 9.0352300000e+00 > 1448225100: nan nan So, your database holds values with internal between 21 and 23, and external between 9 and 10. All positive. The unknown values are before and after this. >From this, I would say your next step should be verifying your data collection >and storage step. When you collect this data and push it into the RRD, do you log any errors? Can you write a line of text to a log file like "Just retrieved value 19 and 9", and "Wrote values to RRD"? When you call "rrdtool update", are you logging any error output? I have not seen the script you are using for collection and storage, so it may well be erroring and you don’t notice it. Steve Steve Shipway T: +64 9 3737 599 ext 86487 E: s.ship...@auckland.ac.nz
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