Splunk Search

Regex three lines with same format to create three field extractions

Bliide
Path Finder

I am trying to pull specific lines from a log file. I have a format that is repeated and I have a regex that is pulling the info from those lines. My problem is that there are 3 lines that have the same format. I need a way to pull each line separately. The REGEX I am using for the field extraction looks like this:

(?i)^(?:[^:]*:){3}(?P[log_error].+)

The regex works but it is pulling lines that have LOG ERROR, LOG INFO and LOG EXCEPTION. The logs look like this:

LOG ERROR:6/6/2014 3:37 PM:

LOG INFO:6/6/2014 3:37 PM:

LOG EXCEPTION:6/6/2014 3:37 PM:

I have tried putting text into the REGEX for each line but I must be inputting something incorrectly. My goal is to create three field extractions (logerror, loginfo and logexcept). I know I just need to add a simple text match to the REGEX but I cannot figure out what I am doing wrong.

0 Karma

landen99
Motivator

I recommend:

(?i)^LOG\s*(?P<log_info>[^:]*):(?P<log_date>[^:]*)

as an automatic field extraction if the events are separated. Otherwise you need to fix the indexing so that the events are separated.

0 Karma

somesoni2
Revered Legend

Give this a try

Your base search | rex "(?i)^LOG (INFO(?:[^:]*:){3}(?P<loginfo>.+)|ERROR(?:[^:]*:){3}(?P<logerror>.+)|EXCEPTION(?:[^:]*:){3}(?P<logexcept>.+))"
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!

Your Feedback. Our Roadmap. Visit the PX Feedback Booth at .conf26

You use Splunk every day, come and help shape what's next.  Save Your Seat: Product-Focused Sessions at ...

Agentic SOC Triage: Investigating Splunk ES Notables with MCP Server and a Local LLM

The Problem: Too Many Alerts, Too Little Context Security operations teams running Splunk Enterprise Security ...

Painting a Clearer Picture: Creating Cross-Domain Visibility with AI Canvas

Watch Now Painting a Clearer Picture: Creating Cross-Domain Visibility with AI Canvas     Do you ever feel ...