Graphing in a different SNMP port

[shingouki]

hi,

just installed my Cacti and I would say it rocks.... but having problem
graphing from a different SNMP port. Actually I would like to graph a
program or an SNMP agent that our developer created to monitor no. of
calls in our iPBX . This uses a different port and OID so as not to
conflict with the net-snmp installed on the same system. I've used the
SNMP - Generic OID Template but it does not tell what new port to use.
Kindly let me know if this is possible. Thanks.



Shingouki

[TheWitness]

In the UI and in cmd.php, yes. Today in Cactid, no. I am just about to release that update.

TheWitness

[shingouki]

hi,

thanks for the reply. kindly let me know as soon as its released, or perhaps there is another quick workaround. again many thanks.

[shingouki]

hi,

thanks for the reply. kindly let me know as soon as its released, or perhaps there is another quick workaround. again many thanks.

hi,

just read that its possible to do it via Data Input Methods, just created my simple scripts but was confused on how I can invoke it and then graph the data that was run by the scripts. Would appreciate any enlightment. Many thanks.


Shingouki

[gandalf]

just read that its possible to do it via Data Input Methods, just created my simple scripts but was confused on how I can invoke it and then graph the data that was run by the scripts. Would appreciate any enlightment. Many thanks.

Shingouki,
there is a documentation on this: http://www.cacti.net/downloads/docs/htm ... PUT_METHOD
In your case, I'd say a single shell script should to the trick. You may provide hostname/IP address, community string and OID to it (perhaps you'll like to provide the SNMP port, timeout, version as well etc.) Your script should do a "snmpget -c <community> .... <hostname/IP> OID" and return solely the value.

Reinhard

[shingouki]

just read that its possible to do it via Data Input Methods, just created my simple scripts but was confused on how I can invoke it and then graph the data that was run by the scripts. Would appreciate any enlightment. Many thanks.

Shingouki,
there is a documentation on this: http://www.cacti.net/downloads/docs/htm ... PUT_METHOD
In your case, I'd say a single shell script should to the trick. You may provide hostname/IP address, community string and OID to it (perhaps you'll like to provide the SNMP port, timeout, version as well etc.) Your script should do a "snmpget -c <community> .... <hostname/IP> OID" and return solely the value.

Reinhard

yup it worked! just recently make sense to me on how to add it finally. many thanks

What I did are;

1. Create Data Input Method using the scripts
2. Create a Graph Template
3. Add a Data Source
4. then Add the Graph

Cacti Rocks And Rules!!!


Shingouki

[shingouki]

its quite lame but anyone knows how to remove a double quotes in an output using awk. cacti seems not to recognize output within quotes like for example "45". thanks.

[TheWitness]

Cacti should. What poller are you using?

TheWitness

[shingouki]

Cacti should. What poller are you using?

TheWitness

hi

im still using cmd.php. just a suspicion of mine since I can poll and graph 3 box without qoutes in snmpget while another box that outputs with qoutes does not.


Shingouki

[TheWitness]

Interesting. I will have to investigate since I believe, repeat "believe", we are stripping off the nva characters. What does your DEBUG log state?

TheWitness

[shingouki]

Interesting. I will have to investigate since I believe, repeat "believe", we are stripping off the nva characters. What does your DEBUG log state?

TheWitness

my log shows these errors;

08/31/2005 04:50:44 PM - CMDPHP: Poller[0] Host[5] DS[126] WARNING: Result from CMD not valid. Partial Result: "22
...
08/31/2005 04:46:13 PM - CMDPHP: Poller[0] Host[5] DS[126] WARNING: Result from CMD not valid. Partial Result: "28
...
08/31/2005 04:40:40 PM - CMDPHP: Poller[0] Host[5] DS[126] WARNING: Result from CMD not valid. Partial Result: "30

[TheWitness]

Please make sure the following exists in your functions.php:

Code: Select all

/* strip_quotes - Strip single and double quotes from a string
	in addition remove non-numeric data from strings.
	@arg $result - (string) the result from the poll
	@returns - (string) the string with quotes stripped */
function strip_quotes($result) {
  	/* first strip all single and double quotes from the string */
	$result = strtr($result,"'","");
	$result = strtr($result,'"','');

	/* clean off ugly non-numeric data */
	if ((!is_numeric($result)) && ($result != "U")) {
		$len = strlen($result);
		for($a=$len-1; $a>=0; $a--){
			$p = ord($result[$a]);
			if (($p > 47) && ($p < 58)) {
				$result = substr($result,0,$a+1);
				break;
			}
		}
	}

	return($result);
}

And that you are running 0.8.6f with patches.

TheWitness

[TheWitness]

Oh, now know the issue. Change to the following:

Code: Select all

/* strip_quotes - Strip single and double quotes from a string
	in addition remove non-numeric data from strings.
	@arg $result - (string) the result from the poll
	@returns - (string) the string with quotes stripped */
function strip_quotes($result) {
  	/* first strip all single and double quotes from the string */
	$result = strtr($result,"'"," ");
	$result = strtr($result,'"',' ');

	/* clean off ugly non-numeric data */
	if ((!is_numeric($result)) && ($result != "U")) {
		$len = strlen($result);
		for($a=$len-1; $a>=0; $a--){
			$p = ord($result[$a]);
			if (($p > 47) && ($p < 58)) {
				$result = substr($result,0,$a+1);
				break;
			}
		}
	}

	return(trim($result));
}

Discovered this today while writing code. Nasty changes in PHP behavior.

[rony]

What version of php does the behavor change in?

[shingouki]

only difference on the code entry under functions.php is below;

from: return($result);

to: return(trim($result));

made the modification but same...

Have tried running patches but looking a specific file to patch. So Im not sure which is which.

..........

sh# pwd
/opt/cacti-0.8.6f

sh# patch -p1 -N < multi_field_output_script_server.patch

Looks like a unified context diff.
File to patch:

No file found -- skip this patch? [no]
File to patch: ^C

sh#

sh# patch -p1 -N < multi_field_output_script_server.patch
Looks like a unified context diff.
File to patch: data_input.php

Hunk #2 failed at line 515.
1 out of 2 hunks failed: saving rejects to data_input.php.rej
I can't seem to find a patch in there anywhere.

sh#

.....................

My system install btw is a Solaris 8(SPARC) with packages version below.

cacti-0.8.6f
httpd-2.0.54
mysql-4.1.14
php-5.0.2
rrdtool-1.0.49
libxml2-2.6.16


Shingouki