Getting Data In

Index only the first line and ignore the rest.

theouhuios
Motivator

Hello

I have few files for which I want to index just the first line and ignore everything else as its purely being used for information. All of them have the same pattern so I guess I cannot use the regex to match and send them to nullqueue. Any setting in props.conf which does that?

Tags (1)
0 Karma

lguinn2
Legend

I would do it this way

props.conf

[mysinglefilesourcetype]
SHOULD_LINEMERGE = false
LINE_BREAKER = ((*FAIL))
TRUNCATE = 10000

which is a variation on this answer

What this does: (1) indexes the whole file as a single event but (2) cuts off everything after the first 10000 characters. You should set TRUNCATE to the maximum length of the first line. If you want to go even further, you could do this:

props.conf

[mysinglefilesourcetype]
SHOULD_LINEMERGE = false
LINE_BREAKER = ((*FAIL))
TRUNCATE = 10000
TRANSFORM-flo = firstlineonly

transforms.conf

[firstlineonly]
REGEX=(?m)^(.*?)$
DEST_KEY=_raw
FORMAT=$1
0 Karma

lguinn2
Legend

Nope, this will only work on a static file.

Is there any way to uniquely identify the first event of the day?

0 Karma

Tejkumar451
Explorer

and is that props.conf should be written on the forwarder side?

0 Karma

theouhuios
Motivator

I guess this will work well on a static file. I have a syslog server which is collecting all info in a single log file per device. So will the props.conf see that it has to allow one event each day from the same log file?

0 Karma

lguinn2
Legend

I was not sure whether it should be

REGEX=(?m)^(.*?)$

or

REGEX=^(.*?)$

Bu looking at a regex reference makes me think that it should have the (?m)

0 Karma
Get Updates on the Splunk Community!

Extending Observability Content to Splunk Cloud

Register to join us !   In this Extending Observability Content to Splunk Cloud Tech Talk, you'll see how to ...

What's new in Splunk Cloud Platform 9.1.2312?

Hi Splunky people! We are excited to share the newest updates in Splunk Cloud Platform 9.1.2312! Analysts can ...

What’s New in Splunk Security Essentials 3.8.0?

Splunk Security Essentials (SSE) is an app that can amplify the power of your existing Splunk Cloud Platform, ...