Cacti not creating the RRD file

[fhalsema]

I have read a number of postings on Cacti not creating an RRD file. None of them seem applicable. I have Cacti version 1.2.23 running for some time. I added a new data input method based on a local bash shell script. I added a data source Template, a graph template and a new graph. When I use manage->Graph to look at the graph I get the information at the end of this post.

Cacti runs a www-data. I ran my custom script as www-data and it runs fine.

The script is

#!/bin/bash
result=$( /usr/local/nagios/libexec/check_nrpe -H ec2-3-136-4-208.us-east-2.compute.amazonaws.com -c check_jvm_heap)
#echo $result
resultarray=($result)
echo ${resultarray[2]}


The script has 755 permissions and check_nrpe has 777 permissions. The script returns a single number. I have another data source based on a custom script and it works fine.

I have compared the two data sources and I don't see anything missing. In case I missed something, I have deleted and recreated the data source twice. Same problem. I ran with DEBUG on. The only this I see is

"'/var/www/html/cacti/rra/aftercare_prod_afheap_176.rrd': No such file or directory".

I am stuck. Any help would be appreciated. Thank You.


RRDtool Command:
/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='-86400' \
--end='-300' \
--pango-markup \
--title='Aftercare JVM Free Heap' \
--vertical-label='MB' \
--slope-mode \
--base=1024 \
--height=150 \
--width=500 \
--alt-autoscale \
--upper-limit='100' \
--lower-limit='0' \
COMMENT:"From 2023-03-24 00\:34\:58 To 2023-03-25 00\:29\:58\c" \
COMMENT:" \n" \
--color BACK#F3F3F3 \
--color CANVAS#FDFDFD \
--color SHADEA#CBCBCB \
--color SHADEB#999999 \
--color FONT#000000 \
--color AXIS#2C4D43 \
--color ARROW#2C4D43 \
--color FRAME#2C4D43 \
--border 1 \
--font TITLE:11:'Arial' \
--font AXIS:8:'Arial' \
--font LEGEND:8:'Courier' \
--font UNIT:8:'Arial' \
--font WATERMARK:6:'Arial' \
--slope-mode \
--watermark 'Generated by Cacti®' \
DEF:a='/var/www/html/cacti/rra/aftercare_prod_afheap_176.rrd':'afheap':AVERAGE \
LINE1:a#0000FFFF:
RRDtool Command lengths = 803 characters.
RRDtool Says:
ERROR: opening '/var/www/html/cacti/rra/aftercare_prod_afheap_176.rrd': No such file or directory

[fhalsema]

I changed owner of /var/www to www-data.www-data. I user the script

Data Source Debug
/usr/bin/rrdtool create \
/var/www/html/cacti/rra/aftercare_prod_acheap3_178.rrd \
--start 0 --step 300 \
DS:acheap3:GAUGE:600:0:U \
RRA:AVERAGE:0.5:1:600 \
RRA:AVERAGE:0.5:6:700 \
RRA:AVERAGE:0.5:24:775 \
RRA:AVERAGE:0.5:288:797 \
RRA:MIN:0.5:1:600 \
RRA:MIN:0.5:6:700 \
RRA:MIN:0.5:24:775 \
RRA:MIN:0.5:288:797 \
RRA:MAX:0.5:1:600 \
RRA:MAX:0.5:6:700 \
RRA:MAX:0.5:24:775 \
RRA:MAX:0.5:288:797 \
RRA:LAST:0.5:1:600 \
RRA:LAST:0.5:6:700 \
RRA:LAST:0.5:24:775 \
RRA:LAST:0.5:288:797 \


i also found that the Downed device wasn't working so I changed it to none. The file is there and I see data when I manage the data source. Nothing on the graph yet. I will look at that tomorrow

[TheWitness]

Under Console > Configuration > Settings > Poller there is a setting to show data collection errors, enable it in Detail level and you will start seeing errors in your Cacti log that should give you a clue.