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  • >> Go to dataminer.services

Correlation rule – filter based on a view sometimes not executed

Solved110 views24th June 2025alarm grouping Correlation rule
1
Trong Huynh [DevOps Member]841 23rd June 2025 0 Comments

Hi Community,

I have a view that contains 100+ services. All these services take parameters from a few elements.

I have a correlation rule. Its objective is to send an email for every service that is in alarm (technically it runs a script that sends the email because I need the script to perform some checks before sending the email).

The issue I'm running into is sometimes when multiple alarms occur, not all alarms trigger the script.

Note also, since the services rely on a few common elements, 1 alarm could affect several services. We only need the script to run once per alarm, because the script can loop through and send an email for each service affected by the alarm.

Any help to achieve the objective would be much appreciated.

Here's the screenshot of my Correlation Rule.

Trong Huynh [DevOps Member] Selected answer as best 24th June 2025

3 Answers

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Catarina Grilo [SLC] [DevOps Enabler]1.62K Posted 24th June 2025 0 Comments

Hi Trong,

This is happening because the correlation rule no longer maintains the active tree status. As a result, the correlated alarm is updated with every new status change.

To avoid this, you can restrict the alarms that pass through the filters. For example, you could filter only for new alarms in one rule, and then use another correlation rule to filter for normal alarms that have dropped from critical.

Alternatively, you can uncheck the Trigger on single events. Don’t maintain active tree status and group the alarms first by element, then by parameter. If they are tables  you can also group them by index.

This approach maintains active tree status so that not every alarm update triggers the correlation. It also prevents alarms from different elements and parameters from being grouped together.

Trong Huynh [DevOps Member] Selected answer as best 24th June 2025
2
Catarina Grilo [SLC] [DevOps Enabler]1.62K Posted 23rd June 2025 0 Comments

Hi Trong,

To trigger the correlation rule for every single alarm, you need to enable the Trigger on single events. Don’t maintain active tree status.

Ref: General configuration of Correlation rules | DataMiner Docs.

Catarina Grilo [SLC] [DevOps Enabler] Answered question 23rd June 2025
0
Trong Huynh [DevOps Member]841 Posted 24th June 2025 0 Comments

Thanks Catarina, enable the Trigger on single events. Don’t maintain active tree status seems to do the job.

However I noticed a little quirk, the Correlation rule is triggered everytime the alarm has a property change. Is there an option to disable that? Ideally the correlation rule should only execute the script when the alarm is Open and when the alarm is Cleared.

Thanks,

Trong.

Trong Huynh [DevOps Member] Answered question 24th June 2025
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