Data Input method + script - no data

[polityk]

As this is my forst post, at the begining I would like to say hi to everyone on this forum and big thanks to all the people involved in CACTI, great job and a wonderful project.
I am quite new to CACTI so I might ask some obvious questions

What I need to do is graph modulation type of a wireless link (Alvarion WiMAX CPE).
I get the data via SNMP and this is great, but the result is a string like: "QAM64-5/6", so afaik there is no way of putting it on graph.
Some time ago i have managed to make a script which associated my SNMP gathered strings with numbers 0-9 and it works fine.
Then manually i have managed to place the data in RRD and create graphs, run all in crontab and voila:



Now I want to move this to CACTI, I have created another script so the gathered data is integer 1-9.

I have created a data input method, data template and graph template according to http://forums.cacti.net/viewtopic.php?t=11288 on other tutorials.
but all i get is NaN on my graph... even found an exapmle with script that generates random data, but i get the same NaN.
Tested the script in shell and it gets the data as planned, when the user is switched to 'cacti' it also works.
Tried to look for hints in the log, but unfortunatelly did not find any... probably my lack of knowledge.
Any help would be much appreciated. Maybe there is another way of doing this?

Cacti 0.8.8.a with spine + some plugins
Running on FreeBSD 9.0
Below is my setup.

Script:
(just started learning perl )

Code: Select all

#!/usr/bin/perl

use warnings;
use Getopt::Long;
use POSIX;

my $snmp_timeout = "5";
my $read_community = "public";
$target_ip = $ARGV[0];

sub modtoval() {
#replace strings with integer values
        if ($_[0] eq "qpsk-ctc-1/2 4 repetitions"){$_[0] = 1}
                elsif ($_[0] eq "qpsk-ctc-1/2 2 repetitions"){$_[0] = 2}
                elsif ($_[0] eq "qpsk-ctc-1/2"){$_[0] = 3}
                elsif ($_[0] eq "qpsk-ctc-3/4"){$_[0] = 4}
                elsif ($_[0] eq "qam16-ctc-1/2"){$_[0] = 5}
                elsif ($_[0] eq "qam16-ctc-3/4"){$_[0] = 6}
                elsif ($_[0] eq "qam64-ctc-2/3"){$_[0] = 7}
                elsif ($_[0] eq "qam64-ctc-3/4"){$_[0] = 8}
                elsif ($_[0] eq "qam64-ctc-5/6"){$_[0] = 9}
}

#SNMP Query
my $downmod= `/usr/local/bin/snmpget -t $snmp_timeout -v 1 -c $read_community -Oqv $target_ip 1.3.6.1.4.1.10529.300.1.1.6.0`;
my $upmod= `/usr/local/bin/snmpget -t $snmp_timeout -v 1 -c $read_community -Oqv $target_ip 1.3.6.1.4.1.10529.300.1.1.5.0`;

#strip unnecessary
$upmod =~ m/"(.+?)"/;
$upmod = $1;
$downmod =~ m/"(.+?)"/;
$downmod = $1;

#replace strings with ints
$downmod = &modtoval($downmod);
$upmod = &modtoval($upmod);

#print data
print "down_mod:" . $downmod . " up_mod:" . $upmod;

Data Input Method:

Data input

data-input.png (44.66 KiB) Viewed 1170 times

Data Template:

data template

data-template.png (78.76 KiB) Viewed 1170 times

Graph Template:

graph template

graph.png (105.64 KiB) Viewed 1170 times

Results:

graph results

results.png (115.74 KiB) Viewed 1170 times

cacti.log (probably too much of it):

cacti.log.txt

(728.01 KiB) Downloaded 85 times

[BSOD2600]

1) have you tried using a regex to parse the number in the output when using a cacti snmp data query? For example http://docs.cacti.net/manual:088:3a_adv ... _in_action or the [SNMP - Interface Statistics] <path_cacti>/resource/snmp_queries/interface.xml for examples.

2) [ip address] in the data template custom data section should be checked.

3) your posted cacti.log doesnt contain a polling cycle. Notice you're not able to find Cacti running your Perl script?

[polityk]

1) no, just thought my approach was easier....
I'l try to do this, but this is not only parsing the output, i need to represent names as numbers.

2) wouldnt this make me enter the ip address every time I create a graph?
I need to take the IP automatically from host.
p.s. tried this and still the same result

3) This was my assumption, but i wasnt sure how it should appear in logs.
Now looking into logs 24hrs old i do not see any reference to my script...
So where to look ?

[polityk]

I think i am getting somewhere.... but not sure...

When running from shell "spine -H 389" (where 389 is my host ID) i get somewhere in the logs:

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05/20/2013 09:08:42 PM - SPINE: Poller[0] Host[389] TH[1] DS[3031] SCRIPT: /usr/bin/perl /usr/local/share/cacti/scripts/alvr_cpe_mod.pl 10.100.2.1, output: down_mod:9 up_mod:9

and

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05/20/2013 09:08:43 PM - SPINE: Poller[0] DEVDBG: SQL:'INSERT INTO poller_output (local_data_id, (...ommited...) 'down_mod:9 up_mod:9')

so this works i guess.. ? values 9 and 9 are correct for this host
but this does not update rrd anyway....

when running the same with "sudo -u cacti" there is:

Code: Select all

Insecure dependency in `` while running setgid at /usr/local/share/cacti/scripts/alvr_cpe_mod.pl line 21.
05/20/2013 09:08:30 PM - SPINE: Poller[0] Host[389] ERROR: Empty result [10.100.2.1]: '/usr/bin/perl /usr/local/share/cacti/scripts/alvr_cpe_mod.pl 10.100.2.1'
05/20/2013 09:08:30 PM - SPINE: Poller[0] Host[389] TH[1] DS[3031] SCRIPT: /usr/bin/perl /usr/local/share/cacti/scripts/alvr_cpe_mod.pl 10.100.2.1, output: U

So probably permissions problem... but where? the script is 777...
Maybe the command in data input methods should use sudo?

update:
Running poller as root fixed the issue, so definatelly a permissions problem.
I will try to find out where exactly is the issue when i get some free time.