Splunk Search

Regex field extraction question

MAMAOUI
Explorer

Hi

I have this log format for extracting

Sep 01 09:55:11 @ipdest HSL: @ip1:port1 <-> @ip2:port2 | @ip3:port3 <-> @ip4:port4

REGEX = (?\S+\s+\d+ \d+:\d+:\d+) (?\d+.\d+.\d+.\d+)[^[]HSL: (?<@ip1>\d+.\d+.\d+.\d+):(?\S+) <-> (?<@ip2>\d+.\d+.\d+.\d+):(?\S+) | (?<@ip3>\d+.\d+.\d+.\d+):(?\S+) <-> (?<@ip4>\d+.\d+.\d+.\d+):(?\S+)

I would like to extract everything , but in my results, all fields were exctracted except whose after pipe | (@ip3:port3 <-> @ip4:port4).
Any help much appreciated.
Thankyou.

0 Karma
1 Solution

micahkemp
Champion

The | character acts as an OR in regex. If you would like to match a literal | escape it: \|.

REGEX = (?\S+\s+\d+ \d+:\d+:\d+) (?\d+.\d+.\d+.\d+)[^[]HSL: (?<@ip1>\d+.\d+.\d+.\d+):(?\S+) <-> (?<@ip2>\d+.\d+.\d+.\d+):(?\S+) \| (?<@ip3>\d+.\d+.\d+.\d+):(?\S+) <-> (?<@ip4>\d+.\d+.\d+.\d+):(?\S+)

View solution in original post

0 Karma

micahkemp
Champion

The | character acts as an OR in regex. If you would like to match a literal | escape it: \|.

REGEX = (?\S+\s+\d+ \d+:\d+:\d+) (?\d+.\d+.\d+.\d+)[^[]HSL: (?<@ip1>\d+.\d+.\d+.\d+):(?\S+) <-> (?<@ip2>\d+.\d+.\d+.\d+):(?\S+) \| (?<@ip3>\d+.\d+.\d+.\d+):(?\S+) <-> (?<@ip4>\d+.\d+.\d+.\d+):(?\S+)

0 Karma

cpetterborg
SplunkTrust
SplunkTrust

You also better escape the periods in your IP addresses - \.. A period will match almost any character of not escaped. Depending on your data, that could be a problem, but likely in this case it won't. But it will parse more quickly if you escape them, which is a side benefit.

MAMAOUI
Explorer

Hello ,

Thank you, It works now,I added the \ before the |.

Meryem

0 Karma
Get Updates on the Splunk Community!

Why You Can't Miss .conf25: Unleashing the Power of Agentic AI with Splunk & Cisco

The Defining Technology Movement of Our Lifetime The advent of agentic AI is arguably the defining technology ...

Deep Dive into Federated Analytics: Unlocking the Full Power of Your Security Data

In today’s complex digital landscape, security teams face increasing pressure to protect sprawling data across ...

Your summer travels continue with new course releases

Summer in the Northern hemisphere is in full swing, and is often a time to travel and explore. If your summer ...