Getting Data In

props.conf precedence

afaraino
Explorer

Hi Everyone,

I'm having a little issue related with props.conf precedence. I want to apply a transforms stanza to set a sourcetype, then another stanza to extract the Metadata:Host field for this sourcetype. I tried this in props.conf :

[source::udp:514]
TRANSFORMS-changesourcetype = set_juniper-sa-access
[juniper-sa-access]
TRANSFORMS-changehost = juniper-sa-access_host

...but it's not working. The first transform sets the sourcetype to juniper-sa-access but the second one never applies.

If I change to that, it's working, but it's not the desired behaviour :

[source::udp:514]
TRANSFORMS-changesourcetype = set_juniper-sa-access
TRANSFORMS-changehost = juniper-sa-access_host

Any clue?

Is it about precedence (source > host > sourcetype)? or is it because the sourcetype is set "too late" for matching the second stanza?

Best Regards,

Alexandre Faraino

Tags (2)
0 Karma

gkanapathy
Splunk Employee
Splunk Employee

Your easiest solution is to just sourcetype = juniper-sa-access in the inputs.conf where you define the [udp://514] stanza. All data from that input will be marked with that sourcetype.

afaraino
Explorer

Actually, I can't : not all logs received on udp:514 are juniper-sa-access. The stanza set_juniper-sa-access contains a regex to check the format.

0 Karma

afaraino
Explorer

Found that similar topic :
http://splunk-base.splunk.com/answers/25512/is-my-sourcetype-override-messing-up-my-field-extraction...

The transforms.conf is read only once. So this is a "by design" behavior. I'll try something else.

Alex

0 Karma

gkanapathy
Splunk Employee
Splunk Employee

Your easiest solution is to just sourcetype = juniper-sa-access in the inputs.conf where you define the [udp://514] stanza. All data from that input will be marked with that sourcetype.

0 Karma
Get Updates on the Splunk Community!

Accelerating Observability as Code with the Splunk AI Assistant

We’ve seen in previous posts what Observability as Code (OaC) is and how it’s now essential for managing ...

Integrating Splunk Search API and Quarto to Create Reproducible Investigation ...

 Splunk is More Than Just the Web Console For Digital Forensics and Incident Response (DFIR) practitioners, ...

Congratulations to the 2025-2026 SplunkTrust!

Hello, Splunk Community! We are beyond thrilled to announce our newest group of SplunkTrust members!  The ...