My RRD file is not updating, what is the reason?
The graph shows the legend with: -nanv
I created the RRD file using this syntax:
rrdtool create ups.rrd --step 300
DS:input:GAUGE:600:0:360
DS:output:GAUGE:600:0:360
DS:temp:GAUGE:600:0:100
DS:load:GAUGE:600:0:100
DS:bcharge:GAUGE:600:0:100
DS:battv:GAUGE:600:0:100
RRA:AVERAGE:0.5:12:24
RRA:AVERAGE:0.5:288:31
Then I updated the file with this syntax:
rrdtool update ups.rrd N:$inputv:$outputv:$temp:$load:$bcharge:$battv
And graphed it with this:
rrdtool graph ups-day.png
-t "ups "
-s -1day
-h 120 -w 616
-a PNG
-cBACK#F9F9F9
-cSHADEA#DDDDDD
-cSHADEB#DDDDDD
-cGRID#D0D0D0
-cMGRID#D0D0D0
-cARROW#0033CC
DEF:input=ups.rrd:input:AVERAGE
DEF:output=ups.rrd:output:AVERAGE
DEF:temp=ups.rrd:temp:AVERAGE
DEF:load=ups.rrd:load:AVERAGE
DEF:bcharge=ups.rrd:bcharge:AVERAGE
DEF:battv=ups.rrd:battv:AVERAGE
LINE:input#336600
AREA:input#32CD3260:"Input Voltage"
GPRINT:input:MAX:" Max %lgv"
GPRINT:input:AVERAGE:" Avg %lgv"
GPRINT:input:LAST:"Current %lgv\n"
LINE:output#4169E1:"Output Voltage"
GPRINT:output:MAX:"Max %lgv"
GPRINT:output:AVERAGE:" Avg %lgv"
GPRINT:output:LAST:"Current %lgv\n"
LINE:load#FD570E:"Load"
GPRINT:load:MAX:" Max %lg%%"
GPRINT:load:AVERAGE:" Avg %lg%%"
GPRINT:load:LAST:" Current %lg%%\n"
LINE:temp#000ACE:"Temperature"
GPRINT:temp:MAX:" Max %lgc"
GPRINT:temp:AVERAGE:" Avg %lgc"
GPRINT:temp:LAST:" Current %lgc"
You will need at least 13 updates, each 5min apart (IE, 12 PDP (primary data points)) before you can get a single CDP (consolidated data point) written to your RRAs, enabling you to get a data point on the graph. This is because your smallest resolution RRA is a Count 12, meaning you need 12 PDP to make one CDP.
Until you have enough data to write a CDP, you have nothing to graph, and your graph will always have unknown data.
Alternatively, add a smaller resolution RRA (maybe Count 1) so that you do not need to collect data for so long before you have a full CDP.