[rrd-users] Strange behavior with rddtool update with crontab

[alix-r]

Because some guys advised to use always full paths.
I did , in crontab as well as in the script I'm starting .

Regards alix-r



alix-r wrote:
> 
> Hello.
> 
> I'm facing a strange behavior with a Bash script executed by CRONTAB.
> The script works fine if I run it from the command line directly. However,
> if I try to run  it time controlled by CRONTAB , I'm getting the following
> error
> message:
> 
> --1-- 
> ERROR: temps.rrd: expected 3 data source readings (got 3) from N
> 39.6875
> 23.125
> 
> If I list the RRD-DB temps.rrd by 
> 
> rrdtool fetch temps.rrd AVERAGE --start N-1000 --end N<
> 
> I can see that the organization  (just 2 values per entry) is correct.
> 
>                        rob_raum           rob_hzvor
> 
> 1224742800: nan nan
> 1224742860: nan nan
> 1224742920: 3.9680094819e+01 2.3062500000e+01
> 1224742980: 3.9695577221e+01 2.3062500000e+01
> 1224743040: 3.9577488868e+01 2.3062500000e+01
> 1224743100: 3.9222938007e+01 2.3062500000e+01
> 1224743160: 3.9664530825e+01 2.3062500000e+01
> 1224743220: nan nan
> 1224743280: nan nan
> 
> Again, the script works correctly  executed via the command line. The 
> valid values above are entered that way. By CRONTAB execution, I do 
> not get entries due to the error.
> 
> Any idea what's wrong ?
> (I'm new with RRDTOOLS and LINUX, hopefully the question is not stupid)
> 
> Thanks
> 
> alix-r
>  
> 

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