I have a perl-script that reads temperatures from digitemp. If i run the
script randomly the database seems to be updated and a graph would be drawn.
But if a cronjob execute the script every 5min the database won't update and
no graph eighter. Can someone explain me why.
This is my databse:
RRDs::create "$rrd/temp$_[0].rrd"
"-s 60",
"DS:temp:GAUGE:240:U:U",
"RRA:AVERAGE:0.5:1:2016",
"RRA:AVERAGE:0.5:6:1344",
"RRA:AVERAGE:0.5:24:2190",
"RRA:AVERAGE:0.5:144:3650";
This is how i update:
RRDs::update "$rrd/temp$_[0].rrd",
"-t", "temp",
"N:$temp";
Is there something about the time difference, before and after the 5
minutes, i have missed or don't understand?
I have dump the database to xml, and every value inserted by cronjob is
"NaN"
The easy question : How do i get a updated timestamp on the graph?
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