Splunk Search

Extract data from one field ot another using Regex

PTC_
Explorer

Hello,
(I will use fictional data to give examples)

I'm trying to use regex to extract data from one field to another, but Splunk doesn't find the data I want in this specific field.

The field I want to extract data (let's call it DATA_FIELD) looks something like:
SMBv2 guid=111111-b111-1111-1111-11111aaaa11 time=2023-02-27 15:17:35 domain=DOMAINNAME version=12.1.11111 ntlm-ver=15 domain=DOMAINNAME name=HOSTNAME domain-dns=DOMAINDNS name-dns=NAMEDNS

I want to extract "name=HOSTNAME" from this field to another one (HOSTNAME_FIELD)
I suspect my Regex parameters are not working with Splunk, even though I tested them all in regex101 .
Example:
| rex field=DATA_FIELD "HOSTNAME_FIELD: name=(?<name>\S*(?))\s"

I tried many forms of regex, such as:
name.(?<=[=])\S*(?:\s)?
.name=(?<=[=])\S*(?)
name=(?<name>\S*(?))\s

None of them worked in Splunk but they work in regex101.

Is this problem on the regex formula itself on Splunk? Or is it problem with the sintax?
What's the best way to extract this data?

Labels (4)
0 Karma

ITWhisperer
SplunkTrust
SplunkTrust
| rex field=DATA_FIELD "name=(?<HOSTNAME_FIELD>\S*?)\s"
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!

Agent Mode Engaged! Enchaining Agentic Operations with Splunk AI Assistant 2.0

    Are you ready to transform how your team handles complex data requests? We invite you to our upcoming ...

Announcing Modern Navigation: A New Era of Splunk User Experience

We are excited to introduce the Modern Navigation feature in the Splunk Platform, available to both cloud and ...

Modernize your Splunk Apps – Introducing Python 3.13 in Splunk

We are excited to announce that the upcoming releases of Splunk Enterprise 10.2.x and Splunk Cloud Platform ...