Getting Data In

Transforms working intermittently on index cluster for AWS Kinesis to HEC

johnansett
Communicator

Hello Splunkers,

We are receiving config notifications, CloudTrail and others from AWS through Kinesis - the general pattern is:
Config -> Event Rules -> Event Hub -> Kinesis -> HEC (indexer cluster)
This works, what seems flawlessly.

We separate the data into indexes based on the account number due to security policies so I've set up props/transforms to do this.

This seems to work most of the time and 77% of the traffic ends up in the correct index but there is 33% (on avg) that ends up in the default index of the HEC (aws_config)

Is it possible that the transforms aren't triggering all the time?
The events are identical format; sourcetype and source are identical.

Here is the transforms:

[aws-account1]
REGEX = 010016492034
DEST_KEY = _MetaData:Index
FORMAT = aws-account1

Props:
[aws:config:notification]
TRANSFORMS-aws_config_notification=aws-account1

Am I missing something here? Is there anything I should look for in internal?

I remember years ago in training an example where props hierarchy would mess with data when there was multiple props/transforms, and the intermittent nature *might* make sense but I have no idea where to troubleshoot this.
The HEC is on a cluster of indexers so the config is all via the CM, thus no differences.

Any suggestions would be greatly appreciated!

Cheers!

1 Solution

johnansett
Communicator

Regex issue.  Multiple account numbers in events.

View solution in original post

0 Karma

johnansett
Communicator

Regex issue.  Multiple account numbers in events.

0 Karma
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!

Data Management Digest – August 2026

MichelleCorpora_1-1788182384472.png Welcome to the August 2026 edition of Data Management Digest! August was a ...

Your Feedback. Our Roadmap. Visit the PX Feedback Booth at .conf26

You use Splunk every day, come and help shape what's next.  Save Your Seat: Product-Focused Sessions at ...

Agentic SOC Triage: Investigating Splunk ES Notables with MCP Server and a Local LLM

The Problem: Too Many Alerts, Too Little Context Security operations teams running Splunk Enterprise Security ...