Bug in network interface and switch port discovery?

[MasopustC (Christian Masopust)]

CMK version: 2.1.0p18
OS version: RHEL 8

We have the following discovery rule (goal is to use the switch port description for the services):

This rule is working fine and all ports are created with the description (e.g. “Interface GigabitEthernet0/0”, “Interface GigabitEthernet0/1”, …).

But, as soon as we add an additional condition (e.g. “Match interface description”), all the ports are then created by the index only (service/item name then is “Interface 01”, “Interface 02”, …)!

So… is this a bug? Or, what am I doing wrong?

Thanks!
Christian

[eins.elf]

Hi!
I followed this DOKU Network Monitoring with Checkmk: 3 rules to rule them all | Checkmk and got the result that i can search in “Summary” of Service for (example VLAN110). Is that what you are looking for?
Best regards

[kdeutsch (Karl Deutsch)]

Hi,
my rule:

… and the result:

Karl

[MasopustC (Christian Masopust)]

Thanks for your response! Just a question: what happens if you add a second condition? With only 1 condition, it’s also working fine here but as soon as we add a 2nd, it fails.

[kdeutsch (Karl Deutsch)]

Hi,
I modified the rule:

The same result as before.

Karl

[MasopustC (Christian Masopust)]

and you are using the same CheckMK version (2.1.0p18)? then something is strange here

Thanks for testing!
Christian

[kdeutsch (Karl Deutsch)]

Hi,

omd sites kurs2
kurs2            2.1.0p18.cee

Karl

[MasopustC (Christian Masopust)]

Ok, so… what are we doing wrong here?

I’ve added some logging to interfaces.py to see what params are provided when the items are discovered and with only 1 condition the value of “item_appearance” is correct (“descr”) but when I add another condition, the value of “item_appearance” is always “index”…