topic Licencing - Memory Alert in Alerting

Licencing - Memory Alert

kasdev — Mon, 26 Feb 2024 09:26:57 GMT

Hello.

I've recently figured out that my hosts' memory size increased which caused my licence consumption increased. Normally hosts' memory sizes were 16gb but somehow it increased up to 128gb. I will share with you a visual.

above you see a conclusion of a script which shows us HU before and after hosts' memory size changed so HU changed.

My question is:

Is there a way that i can create an alert when hosts memory size increased which causes my HU increased?

Re: Licencing - Memory Alert

AntonPineiro — Fri, 16 Feb 2024 08:25:44 GMT

Hi,

You can create a metric event when that metric is higher than X value.

Best regards

Re: Licencing - Memory Alert

Julius_Loman — Fri, 16 Feb 2024 09:26:30 GMT

You can easily find them using the delta transformation in Data Explorer:

builtin:host.mem.total:splitBy("dt.entity.host"):auto:delta:filter(series(auto,gt(0)))

Re: Licencing - Memory Alert

kasdev — Fri, 16 Feb 2024 14:37:48 GMT

like this?

i think this dashboard gives me host memories. but it does not give me alerts if hosts' memory sizes change or cross the limits i can create.

i am still confused how can i create alert on this dashboard.

Re: Licencing - Memory Alert

Julius_Loman — Fri, 16 Feb 2024 15:48:40 GMT

Please paste the metric selector I provided into advanced mode. :delta transformation is the important point.

Re: Licencing - Memory Alert

kasdev — Sun, 18 Feb 2024 22:27:31 GMT

hello again.

i did what you said end now i see:

but i am still not sure if this dashboard gives me ALERTS if hosts' memory sizes change.

how can i create alerts if a host's memory changes?

Re: Licencing - Memory Alert

AntonioSousa — Sun, 18 Feb 2024 23:42:27 GMT

@kasdev,

You can create a "Metric Event" for it. Select an appropriate Event type, and then alert on it.

Re: Licencing - Memory Alert

PacoPorro — Mon, 19 Feb 2024 08:44:41 GMT

@kasdev , to create the metric event, you can use the following fields

Re: Licencing - Memory Alert

kasdev — Mon, 19 Feb 2024 09:26:34 GMT

Thank you very much. But i've last question 🙂

do you have an idea if this solution consumes DDU ?

Re: Licencing - Memory Alert

Julius_Loman — Mon, 19 Feb 2024 09:53:24 GMT

@kasdev No, it does not. It's based on the built-in metrics.

Re: Licencing - Memory Alert

AntonioSousa — Mon, 19 Feb 2024 12:41:20 GMT

It doesn't even consume DDUs per custom Davis events, as it doesn't meet the requirements explained in https://docs.dynatrace.com/docs/manage/subscriptions-and-licensing/monitoring-consumption-classic/davis-data-units/ddu-events