creating custom snmp oid's????

RouterOS The Dude
1

Hi guys

Is it possible to create a snmp oid from the output of a script?

2

and than what? query that oid to device?
than, yes. you just need to parse script otput by array_element function

3

Well at the moment I use a ros_command (“/system script run CCQ”) in a probe to get specific stats that are not available in snmp…

I want to run the “CCQ” script on the mikrotik every few seconds but convert the output to a snmp oid. Then I can pull the graphs from other programs like MRTG for example…

4

yes, you can, but that not work of Dude software.
You need to extend ucd-snmp agent, buy adding OID-script equation.
You can use examples from snmpd.conf

###############################################################################

Executables/scripts

You can also have programs run by the agent that return a single

line of output and an exit code. Here are two examples.

exec NAME PROGRAM [ARGS …]

NAME: A generic name.

PROGRAM: The program to run. Include the path!

ARGS: optional arguments to be passed to the program

a simple hello world

#exec echotest /bin/echo hello world

Run a shell script containing:

#!/bin/sh

echo hello world

echo hi there

exit 35

Note: this has been specifically commented out to prevent

accidental security holes due to someone else on your system writing

a /tmp/shtest before you do. Uncomment to use it.

#exec shelltest /bin/sh /tmp/shtest

Then,

% snmpwalk -v 1 localhost -c public .1.3.6.1.4.1.2021.8

enterprises.ucdavis.extTable.extEntry.extIndex.1 = 1

enterprises.ucdavis.extTable.extEntry.extIndex.2 = 2

enterprises.ucdavis.extTable.extEntry.extNames.1 = “echotest”

enterprises.ucdavis.extTable.extEntry.extNames.2 = “shelltest”

enterprises.ucdavis.extTable.extEntry.extCommand.1 = “/bin/echo hello world”

enterprises.ucdavis.extTable.extEntry.extCommand.2 = “/bin/sh /tmp/shtest”

enterprises.ucdavis.extTable.extEntry.extResult.1 = 0

enterprises.ucdavis.extTable.extEntry.extResult.2 = 35

enterprises.ucdavis.extTable.extEntry.extOutput.1 = “hello world.”

enterprises.ucdavis.extTable.extEntry.extOutput.2 = “hello world.”

enterprises.ucdavis.extTable.extEntry.extErrFix.1 = 0

enterprises.ucdavis.extTable.extEntry.extErrFix.2 = 0

Note that the second line of the /tmp/shtest shell script is cut

off. Also note that the exit status of 35 was returned.

-----------------------------------------------------------------------------

5

Thanks for your quick replies sady

I am not quite sure what exactly I must do…Do I need to run the scripts on a linux box? Is there a wiki I can follow? I tried googling but didn’t get very far

thanks

6

may be i misunderstand you question, because i haven’t mikrotik routers.

Where a you running ros_command ? on Mikrotik Router? or in Dude over Mikrotik router device on map?

7

the script is setup on mikrotik routerboard and I am using the dude to run the ros_command…

8

then, still, answer is Yes, but Dude software can’t help you in this.
You can run ros_commands (some how) from linux box, and then “transfer” it to snmp oid… This didn’t look pretty…