Splunk Search

Inline REX extraction not working once I move it Field Extraction

ebailey
Communicator

The following gives me exactly what I want

host=****** Failed_Reason minutesago=15 | rex "\>(?<Failed_Reason>.*?)\<"

but when I use the regex to build a field extraction I cannot get a result even after restarting the indexer. The search output is the same.

The field extraction format is

"\>(?<Failed_Reason>.*?)\<"

Any idea why this is not working?

Thanks

Tags (2)
0 Karma
1 Solution

sowings
Splunk Employee
Splunk Employee

1) Sounds like auto key=value extraction may be giving you a helping hand.

2) Your regex mentions > and < as marker characters, yet none are visible in your sample message.

3) When you move a regular expression from the search bar into transforms.conf, you'll want to remove the enclosing double-quotes.

View solution in original post

0 Karma

ebailey
Communicator

thanks - the ifx was of no help at all for this issue

0 Karma

ebailey
Communicator

Thanks - that makes sense. Not sure why but about 40 minutes this started working.

0 Karma

sowings
Splunk Employee
Splunk Employee

1) Sounds like auto key=value extraction may be giving you a helping hand.

2) Your regex mentions > and < as marker characters, yet none are visible in your sample message.

3) When you move a regular expression from the search bar into transforms.conf, you'll want to remove the enclosing double-quotes.

0 Karma

lukejadamec
Super Champion

Have yoy tried the field extractor app? It will generate a regex for you.
It is not clear what you're asking, is this for an index time extraction?

0 Karma
Get Updates on the Splunk Community!

.conf25 technical session recap of Observability for Gen AI: Monitoring LLM ...

If you’re unfamiliar, .conf is Splunk’s premier event where the Splunk community, customers, partners, and ...

A Season of Skills: New Splunk Courses to Light Up Your Learning Journey

There’s something special about this time of year—maybe it’s the glow of the holidays, maybe it’s the ...

Announcing the Migration of the Splunk Add-on for Microsoft Azure Inputs to ...

Announcing the Migration of the Splunk Add-on for Microsoft Azure Inputs to Officially Supported Splunk ...