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Old 3 Weeks Ago
ed.n1n2 ed.n1n2 is offline
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Default Custom OID in snmpd.conf

Hi,

I can create a custom OID in Linux very easily:

Code:
extend my.custom.oid /etc/snmp/scripts/custom.oid.sh 301
This does not work in OpenBSD 6.1, and rcctl start snmpd fails. The syntax seems to be wildly different. This does work:

Code:
read-only community public
system location lab
system name devmachine1
system contact me@example.com
system services 74
Yes, I have read the manual, but there are no examples or descriptions of what I'm trying to do at all.

Code:
oid 1.3.6.1.4.1.30155.42.1 name myName read-only string "humppa"
oid 1.3.6.1.4.1.30155.42.2 name myStatus read-only integer 1
Those work just fine as they are and I can modify the OID, names, etc. What they don't do is provide what pass, exec, and extend allows.

I've tried for hours with other example code, but none of it is example code that will work with OpenBSD's implementation.

How can I extend SNMP to run a custom program and return back the output?
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Old 3 Weeks Ago
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jggimi jggimi is online now
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According to reyk@, the security model is designed to prevent extensibilty, and if custom extensions are needed, you should use net/net-snmp.

Reference: http://www.undeadly.org/cgi?action=a...20071205120138
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Old 3 Weeks Ago
ed.n1n2 ed.n1n2 is offline
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Thanks... I guess

I'm somewhat surprised that the logic is to *prevent* extensibility. I'm not finding anything on how to write my own listener. I assume this means I need to uninstall/disable the current implementation, and then my own program becomes the SNMP server?

I can't be the only one with a need for custom OIDs. There isn't anybody else that has a custom OID on OpenBSD? I'm really surprised that I have to write this software to do something that a single line of code does in Linux.
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This forum is a tiny subset of the BSD user community as a whole. If you want you could post to the OpenBSD misc@ mailing list, or you could send an Email to reyk@ directly.
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