Splunk Search

field alias and lookup fields

arlombar
Explorer

Hello,

I am currently in the process of normalizing some fields from some DNS logs we are receiving an I am running into an issue with field aliases. Essentially, I have a few automatic lookups that run when a search is done on this index that provide some enrichment details. One of this details is a username which I am simply trying to map to either "src_user" or "user". For the time being, I am creating an alias to set this value based on a field from the lookup (the field name is "username"). However, I went enter the below in the props.conf file on the SH I am not seeing the field created:

[dns_data]
FIELDALIAS-dns_username = username AS user

And when I try and search for the field within this index I am getting back blank values. The username is not part of the event so I can't perform an extract so I thought field aliasing would be best here. I know there is an order of precedence with the way that Splunk processes this search time extractions, but is it possible to perform a field alias on field that was created from an automatic lookup? Or does anyone have any suggestions on a better way to make this work?

0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Splunk App Dev Quarterly Roundup: AI, Agents, and Innovation!

Another quarter, another wave of innovation. From complex integrations to pushing the limits ...

Federated Search for Dynamic Data Self Storage Is Now Generally Available on Splunk ...

 Splunk is excited to announce the General Availability of Federated Search for Dynamic Data Self Storage ...

Index This | What has many keys but can’t unlock a door?

July 2026 Edition  Hayyy Splunk Education Enthusiasts and the Eternally Curious!   We’re back with this ...