Alerting

Missing Activity Alert False Positives

mf439
New Member

Hi, 

 

I have the following alert set up: 

query (roughly): 

 

 

index="myindex" "the log message that i am interested in"
| head 1

 

 

Alert type: Scheduled, Run on Cron Schedule */5 * * * * (every 5 minutes) for the last 10 minutes.

Trigger alert when Number of Results is less than 1. I also added throttling and configured an email to be sent when the alert triggers. 

 

It works fine most of the time, but in irregular intervals, I receive alerts. Some of them are valid, because there just were no events. For others, the saved search doesn't show events, but starting the same search again, will show that there actually were events logged, so I'd consider those alerts false positives.

My first idea was that delays in the forwarding and indexing processes lead to this result, but when by checking the _indextime field, this explanation can be ruled out as well. 

Does anyone have an idea why these false positives  appear and how I can get rid of them? 

 

Thanks in advance! 

Labels (2)
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!

Deep Dive: Accelerate threat investigation with Splunk’s AI Assistant in Security

AI is one of the biggest topics in the market today, and for security teams, its value goes far beyond the ...

Announcing Modern Navigation: A New Era of Splunk User Experience

We are excited to introduce the Modern Navigation feature in the Splunk Platform, available to both cloud and ...

Detection Engineering Office Hours: Real-World Troubleshooting & Q&A

[REGISTER HERE] This thread is for the Community Office Hours session on Detection Engineering Office Hours: ...