lookup creates empty labels

[llamafilm]

Host operating system: output of uname -a

Linux grafanatest-i-056a1b7f8d5405c62 5.19.0-1028-aws #29~22.04.1-Ubuntu SMP Tue Jun 20 19:12:11 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

snmp_exporter version: output of snmp_exporter -version

0.24.1

What device/snmpwalk OID are you using?

iBoot PDU
OID 1.3.6.1.4.1.1418.6.5

If this is a new device, please link to the MIB(s).

iboot-pdu.mib.txt

What did you do that produced an error?

I'm trying to use a lookup to add a label on each metric with the outlet name, but the labels end up as an empty string. My config is like this:

  iboot_pdu:
    walk:
      - 1.3.6.1.4.1.1418.6.5 # outletTable
    lookups:
      - source_indexes:
          - outletIndex
        lookup: outletName

What did you expect to see?

I want the results to look like this:

outletStatus{outletIndex="0",outletName="1-LightwareHDMI"} 1

What did you see instead?

With the lookup:

# HELP outletIndex  - 1.3.6.1.4.1.1418.6.5.1.1
# TYPE outletIndex gauge
outletIndex{outletIndex="0",outletName=""} 1
outletIndex{outletIndex="1",outletName=""} 2
outletIndex{outletIndex="2",outletName=""} 3
outletIndex{outletIndex="3",outletName=""} 4
outletIndex{outletIndex="4",outletName=""} 5
outletIndex{outletIndex="5",outletName=""} 6
outletIndex{outletIndex="6",outletName=""} 7
outletIndex{outletIndex="7",outletName=""} 8
# HELP outletName The name of the outlet up to 20 characters - 1.3.6.1.4.1.1418.6.5.1.2
# TYPE outletName gauge
outletName{outletIndex="0",outletName=""} 1
outletName{outletIndex="1",outletName=""} 1
outletName{outletIndex="2",outletName=""} 1
outletName{outletIndex="3",outletName=""} 1
outletName{outletIndex="4",outletName=""} 1
outletName{outletIndex="5",outletName=""} 1
outletName{outletIndex="6",outletName=""} 1
outletName{outletIndex="7",outletName=""} 1
# HELP outletStatus  - 1.3.6.1.4.1.1418.6.5.1.6
# TYPE outletStatus gauge
outletStatus{outletIndex="0",outletName=""} 1
outletStatus{outletIndex="1",outletName=""} 1
outletStatus{outletIndex="2",outletName=""} 1
outletStatus{outletIndex="3",outletName=""} 1
outletStatus{outletIndex="4",outletName=""} 1
outletStatus{outletIndex="5",outletName=""} 1
outletStatus{outletIndex="6",outletName=""} 0
outletStatus{outletIndex="7",outletName=""} 1

With no lookups:

# HELP outletIndex  - 1.3.6.1.4.1.1418.6.5.1.1
# TYPE outletIndex gauge
outletIndex{outletIndex="0"} 1
outletIndex{outletIndex="1"} 2
outletIndex{outletIndex="2"} 3
outletIndex{outletIndex="3"} 4
outletIndex{outletIndex="4"} 5
outletIndex{outletIndex="5"} 6
outletIndex{outletIndex="6"} 7
outletIndex{outletIndex="7"} 8
# HELP outletName The name of the outlet up to 20 characters - 1.3.6.1.4.1.1418.6.5.1.2
# TYPE outletName gauge
outletName{outletIndex="0",outletName="1-MacStudio"} 1
outletName{outletIndex="1",outletName="2-Mezzo-1"} 1
outletName{outletIndex="2",outletName="3-UltraStudio"} 1
outletName{outletIndex="3",outletName="4-MP-60"} 1
outletName{outletIndex="4",outletName="5-Mezzo-2"} 1
outletName{outletIndex="5",outletName="6-Core110f"} 1
outletName{outletIndex="6",outletName="Outlet-7"} 1
outletName{outletIndex="7",outletName="8-Roku"} 1
# HELP outletStatus  - 1.3.6.1.4.1.1418.6.5.1.6
# TYPE outletStatus gauge
outletStatus{outletIndex="0"} 1
outletStatus{outletIndex="1"} 1
outletStatus{outletIndex="2"} 1
outletStatus{outletIndex="3"} 1
outletStatus{outletIndex="4"} 1
outletStatus{outletIndex="5"} 1
outletStatus{outletIndex="6"} 0
outletStatus{outletIndex="7"} 1

$ snmpwalk -v2c -c netflixsnmp -On -m IBOOTPDU-MIB 10.37.155.163 enterprises.1418.6.5
.1.3.6.1.4.1.1418.6.5.1.1.0 = INTEGER: 1
.1.3.6.1.4.1.1418.6.5.1.1.1 = INTEGER: 2
.1.3.6.1.4.1.1418.6.5.1.1.2 = INTEGER: 3
.1.3.6.1.4.1.1418.6.5.1.1.3 = INTEGER: 4
.1.3.6.1.4.1.1418.6.5.1.1.4 = INTEGER: 5
.1.3.6.1.4.1.1418.6.5.1.1.5 = INTEGER: 6
.1.3.6.1.4.1.1418.6.5.1.1.6 = INTEGER: 7
.1.3.6.1.4.1.1418.6.5.1.1.7 = INTEGER: 8
.1.3.6.1.4.1.1418.6.5.1.2.0 = STRING: 1-MacStudio
.1.3.6.1.4.1.1418.6.5.1.2.1 = STRING: 2-Mezzo-1
.1.3.6.1.4.1.1418.6.5.1.2.2 = STRING: 3-UltraStudio
.1.3.6.1.4.1.1418.6.5.1.2.3 = STRING: 4-MP-60
.1.3.6.1.4.1.1418.6.5.1.2.4 = STRING: 5-Mezzo-2
.1.3.6.1.4.1.1418.6.5.1.2.5 = STRING: 6-Core110f
.1.3.6.1.4.1.1418.6.5.1.2.6 = STRING: Outlet-7
.1.3.6.1.4.1.1418.6.5.1.2.7 = STRING: 8-Roku

[llamafilm]

It works fine with net-snmp (after I realized snmptable is not compatible with the -On option)

% snmptable -v2c -c netflixsnmp -m IBOOTPDU-MIB 10.37.155.163 1.3.6.1.4.1.1418.6.5 
SNMP table: IBOOTPDU-MIB::outletTable

 outletIndex    outletName outletInitialState outletCycleTime outletControl outletStatus outletActualStatus
           1   1-MacStudio               last              10            on           on                 on
           2     2-Mezzo-1               last              10            on           on                 on
           3 3-UltraStudio               last              10            on           on                 on
           4       4-MP-60               last              10            on           on                 on
           5     5-Mezzo-2               last              10            on           on                 on
           6    6-Core110f               last              10            on           on                 on
           7      Outlet-7               last              10            on           on                 on
           8        8-Roku               last              10         cycle           on                 on

[llamafilm]

This was caused by a duplicate outletName field in a different MIB. I fixed it by specifying the full OID in the lookup instead of just the name. This should be improved by #828

[SuperQ]

With the new multi-file module support, you can split your generator.yml into different parts and have a different MIBDIRS specification for each one. Then the exporter can load multiple lists of modules. This should make it easier to handle conflicting MIBs.