Splunk Search

regex field extraction; same source, variably different fields

gsawyer1
Engager

I've got input from a syslog source, that looks like this:

2012-10-10 04:04:52[connection-5] AUTH: User xxx authenticated.

2012-10-10 04:04:52[Scan Thread: document1.doc -> /127.0.0.1] MODULES: File analysis

I want to extract the user (xxx) and document1.doc fields at search time, if possible, for inclusion in a table, and charts, etc, but am having trouble devising a rex statement in the search that can extract both values as different fields, yet from the same source. A conditional regex is what I am looking for. This would also be part of a transaction (the next step to undertake). Any suggestions would be great!....

Tags (2)
0 Karma

lguinn2
Legend

You can have multiple extract statements for a source or sourcetype...

[source::/yoursourcehere]
EXTRACT-e1=AUTH: User\s+(?<user>\S+)\s+authenticated.
EXTRACT-e2=Scan Thread:\s+(<file>\S+)\s

lguinn2
Legend

[sourcetype::mysource] is not valid. You need to specify either

[mysourcetypename]

or

[source::/pathto/mysource]

0 Karma

lguinn2
Legend

No reason. It's probably even better to generalize the whitespace with \s as you did.

0 Karma

gsawyer1
Engager

Was there some reason why you did not use the following syntax:

[source::/yoursourcehere]
EXTRACT-e1=AUTH:\s+User\s+(?\S+)\s+authenticated.
EXTRACT-e2=Scan\sThread:\s+(\S+)\s\-\>\s

0 Karma

gsawyer1
Engager

I attempted the following in props.conf only:

[sourcetype::mysource] (because I already have multiple transforms applied to this source)
EXTRACT-e1=AUTH: User\s+(?<submitter>\S+)\s+authenticated.
EXTRACT-e2=Scan Thread:\s+(<file>\S+)\s\-\>\s

....and nothing happened. No fields "submitter" or "file" were extracted when I ran a search for that sourcetype, looking for results that contain this data.

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!

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 ...

Step into “Hunt the Insider: An Splunk ES Premier Mystery” to catch a cybercriminal ...

After a whole week of being on call, you fell asleep on your keyboard, and you hit a sequence of buttons that ...

SplunkTrust Application Period is Officially OPEN!

It's that time, folks! The application/nomination period for the 2026-2027 SplunkTrust is officially open. If ...