Splunk Search

transforms the source to remove timestamp

mataharry
Communicator

I want to change the source filename for my data to remove the timestamp.

from mypath\to\my\folder\userentrypoint17_20110309T143708_170500.log to mypath\to\my\folder\userentrypoint17.log

the timestamp in the filename is not used, because the complete timestamp is precsent in each event.

Tags (2)
1 Solution

yannK
Splunk Employee
Splunk Employee

Here is the method.

On the indexer side (or the regular forwarder)

in /local/props.conf
[sourcetypeofyourdata]
TRANSFORMS-changesource = removetimestamp

in /local/transforms.conf
[removetimetamp]
SOURCE_KEY = MetaData:Source
DEST_KEY = MetaData:Source
REGEX = (.*?)(_\d{8}T\d{6}_\d{6})(\.log)
#use a regex to extract the filename
FORMAT = source::$1$3

to explain here is the regex in action : mypath\userentrypoint17_20110309T143708_170500.log
is cut in 
$1: mypath\userentrypoint17
$2: _20110309T143708_170500
$3: .log 
and we throw away the $2 

View solution in original post

Lowell
Super Champion

You may find some of the transformer examples here helpful as well:

http://splunk-base.splunk.com/answers/3470/consolidate-similarly-named-log-files-into-a-single-sourc...

yannK
Splunk Employee
Splunk Employee

Here is the method.

On the indexer side (or the regular forwarder)

in /local/props.conf
[sourcetypeofyourdata]
TRANSFORMS-changesource = removetimestamp

in /local/transforms.conf
[removetimetamp]
SOURCE_KEY = MetaData:Source
DEST_KEY = MetaData:Source
REGEX = (.*?)(_\d{8}T\d{6}_\d{6})(\.log)
#use a regex to extract the filename
FORMAT = source::$1$3

to explain here is the regex in action : mypath\userentrypoint17_20110309T143708_170500.log
is cut in 
$1: mypath\userentrypoint17
$2: _20110309T143708_170500
$3: .log 
and we throw away the $2 
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!

Make Your Machine Data AI-Ready in Splunk

Every team is getting ready for AI agents.   Thursday, November 12, 2026  |  11AM  PST / 2PM EST   ...

Splunk Asynchronous Forwarding Explained

Splunk asynchronous forwarding is often misunderstood as simply setting autoLBVolume. That is not quite right. ...

How to Monitor AI Agents with Splunk Agent Observability

Let’s say I’m running a travel planning AI app in production. A user asks for three concise hotel options in ...