Splunk Search

Extract a field and perform subsearch

mihirpradhan
Explorer

Hello,

I have this subsearch command:

[search source="local/data/user/logs/access*" status =5* | table request_id]

It gets the request_id's from the table and searches for them globally. I have a service file in which the request_id field is not extracted by default and gets excluded from search results. How can I make sure that the subsearch includes the results from the service file?

Here is my command to extract the request_id field from the service file

source="/home/user/logs/service*" | rex "Request\sID:\s(?<request_id>\w+)"

Thanks

0 Karma
1 Solution

gcusello
SplunkTrust
SplunkTrust

Hi @mihirpradhan,
you should stably extract the field using your regex in the field extractor (not using the rex command), in this way you'll have in props.conf

EXTRACT-Full-Before-After-Size-Time = Request\sID:\s(?<request_id>\w+)

then extend your subsearch to the other source, something like this:

your_main_search [search index=yur_index (source="local/data/user/logs/access*" status =5*) OR source="/home/user/logs/service*"| table request_id]
| ...

I hint to use always the index filter in your searches because they are faster.

Ciao.
Giuseppe

View solution in original post

gcusello
SplunkTrust
SplunkTrust

Hi @mihirpradhan,
you should stably extract the field using your regex in the field extractor (not using the rex command), in this way you'll have in props.conf

EXTRACT-Full-Before-After-Size-Time = Request\sID:\s(?<request_id>\w+)

then extend your subsearch to the other source, something like this:

your_main_search [search index=yur_index (source="local/data/user/logs/access*" status =5*) OR source="/home/user/logs/service*"| table request_id]
| ...

I hint to use always the index filter in your searches because they are faster.

Ciao.
Giuseppe

mihirpradhan
Explorer

Thank you. That worked beautifully!

0 Karma
Get Updates on the Splunk Community!

Join Us for Splunk University and Get Your Bootcamp Game On!

If you know, you know! Splunk University is the vibe this summer so register today for bootcamps galore ...

.conf24 | Learning Tracks for Security, Observability, Platform, and Developers!

.conf24 is taking place at The Venetian in Las Vegas from June 11 - 14. Continue reading to learn about the ...

Announcing Scheduled Export GA for Dashboard Studio

We're excited to announce the general availability of Scheduled Export for Dashboard Studio. Starting in ...