Adding New HW

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1

Hi,

Not a usage issue, rather pulling my hair out trying to add appropriate code to detect dd-wrt and openwrt. Is there any documentation on the discovery and polling process, and what files to update / add? And it seems that the distro app / function has pretty much gone away … right? Again, just trying to wrap my head around it (as I’m close, but the detected OS keeps changing on me).

Any pointers would be greatly appreciated!

Thanks

2

No, it still uses the distro script with snmp extend.

3

OK, thanks! I didn’t see distro in the docs any more (or perhaps I missed it).

I am having “fun” with dd-wrt, as it seems the custom OID that is used with distro is not working (exec being deprecated, moving to extend). Hmmm - is the custom OID captured anywhere? It does mean a particular (special) snmp command (adding in the OID), correct?

And is there any info capturing the discovery and polling process?

Thanks again.

4

BTW, I think part of my issue is that dd-wrt seems to have removed / reduced exec support => cannot seem to get the distro info at OID .1.3.6.1.4.1.2021.7890.1. Rather, I have to use extend, and the result is then at OID .1.3.6.1.4.1.8072.1.3.2.3.1.1 => is there a way to have LibreNMS look at this “new” OID instead?

Thanks!

5

I think it should already if you name the extend “distro”

6

Starting to make more sense, getting it all working - thanks! One thing … where are the needed / possible variables defined or captured? For example … $version, $hardware, etc.

Thanks again.

7

To what I just found here, https://docs.librenms.org/Support/SNMP-Configuration-Examples/

Is the intention to use the OID mappings as on that page (and copied below)?

#Distro Detection
extend .1.3.6.1.4.1.2021.7890.1 distro /usr/bin/distro

#Hardware Detection (uncomment to enable)
#extend .1.3.6.1.4.1.2021.7890.2 hardware '/bin/cat /sys/devices/virtual/dmi/id/product_name'
#extend .1.3.6.1.4.1.2021.7890.3 manufacturer '/bin/cat /sys/devices/virtual/dmi/id/sys_vendor'
#extend .1.3.6.1.4.1.2021.7890.4 serial '/bin/cat /sys/devices/virtual/dmi/id/product_serial'

Thanks!