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Apologies for re-asking such an often asked question. But just wondering if someone can tell me what or of I am doing something wrong.
I am graphing temperature and for about three hours the "data" received was -30C. This was obviously incorrect. When I initially created the datasource I set the minimum to -100 for some silly reason.
This is what I have done to try and remedy (remove) these incorrect values.
Changed the minimum value in the datasourse to -20 within cacti. I then ran a rrdtool tune <filenname> --minimum -20 and it worked (as in it saved to the file.
Am I wrong in thinking this should change the -30 values to NaNs? (but it hasn't)
It will change all new updates below -20 to NaNs but will chnage not a single existing entry. Search the forum for an rrd file editor contributed some time ago
Reinhard
gandalf wrote:It will change all new updates below -20 to NaNs but will chnage not a single existing entry. Search the forum for an rrd file editor contributed some time ago
Reinhard
Ah thanks Reinhard... cheers for clearing that up.. Ill look into the rrd editor..
