GPRINT error - returns zero value when set to Exact Numbers

[garyb]

Hello,

I've written a data query to return some information that we would like to graph. This works absolutely fine, and in the past I've had this working with cacti.

I've added this data source into a simple graph which should output the numerical values via GPRINT from the script at the bottom of the graph.

If I set the GPRINT Type to either Exact Numbers or Normal, then the graph will only output "0".

If this is changed back to Load Average, we start to get output to two decimal places?

How can I get this working as whole numbers?

Can anyone help

Thanks

[gandalf]

Please post the output from Graph Management for the given graph when switching to DEBUG mode for both types of graph
R.

[garyb]

## With GPRINT (current) set to Exact numbers ##

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title='Codian MCU001' \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label='' \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
DEF:a="/var/lib/cacti/rra/mcu001_vid_use1_13.rrd":vid_use1:AVERAGE \
DEF:b="/var/lib/cacti/rra/mcu001_vid_use1_13.rrd":vid_use1:MAX \
COMMENT:"Video usage\n" \
GPRINTLAST:"Current\:%8.0lf" \
GPRINTAVERAGE:"Average\:%8.2lf %s" \
GPRINTMAX:"Maximum\:%8.2lf %s\n" \
LINE2:a#FF0000FF:"Average" RRDTool Says:

RRDTool Says:

OK

## With GPRINT (current) set to Load average ##

RRDTool Command:

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start=-86400 \
--end=-300 \
--title='Codian MCU001' \
--base=1000 \
--height=120 \
--width=500 \
--alt-autoscale-max \
--lower-limit=0 \
--vertical-label='' \
--slope-mode \
--font TITLE:12: \
--font AXIS:8: \
--font LEGEND:10: \
--font UNIT:8: \
DEF:a="/var/lib/cacti/rra/mcu001_vid_use1_13.rrd":vid_use1:AVERAGE \
DEF:b="/var/lib/cacti/rra/mcu001_vid_use1_13.rrd":vid_use1:MAX \
COMMENT:"Video usage\n" \
GPRINTLAST:"Current\:%8.2lf" \
GPRINTAVERAGE:"Average\:%8.2lf %s" \
GPRINTMAX:"Maximum\:%8.2lf %s\n" \
LINE2:a#FF0000FF:"Average" RRDTool Says:

RRDTool Says:
OK

[gandalf]

That looks fine. It won't work for numbers < 1. Which numbers do you want to GPRINT?
R.

[garyb]

Currently the script is out putting numbers >5

And still it shows as zero

[garyb]

And if I set the Avg and Max GPRINT functions to Round numbers.. they also then start to show as zero.

[gandalf]

Would it be possible to email that very rrd file?
R.

[garyb]

In order to email it across, I would need to check the content of the file first (security policy here )

What tool can decode it, as it can't be read as clear text?

Edit.

I've dumped it out to xml via rrdtool - what email address please?

[gandalf]

I've dumped it out to xml via rrdtool - what email address please?

That's indeed the required format. Please use the email address provided underneath each of my posts; gzip the file before posting, please
R.

[garyb]

File sent.

Thanks!

[garyb]

Did you get my email gandalf ?

Thanks

[gandalf]

Yep, but need more time. Not before end of weekend.
R.

[gandalf]

I just verified in production environment, that the basic idea is working. So I need to find out, in which way your environment is "special" ...
R.

[gandalf]

Currently the script is out putting numbers >5

And still it shows as zero

Unfortunately, this statement is NOT correct. Next time I will request a screenshot. I'll attach what I've created with your rrd file.

Do you see the "m", denoting "milli" == "1/1000"?
So, your numbers are indeed below 1. Printing the integer part of such a number indeed yields 0.
R.

[garyb]

I beg to differ... Unless I'm not understanding.

Here is the latest log entry from cacti.log - showing the script returning a value of 26

Code: Select all

04/23/2012 10:30:03 AM - CMDPHP: Poller[0] Host[2] DS[13] CMD: sh /usr/share/cacti/site/scripts/Scrape-mcu001.sh <ipaddress> <username> <password>, output: vid_use1:26