How to trigger ScaledJob when custom metric is 0?

[ksemele]

Hello.
I've got a job that I'll trigger only when my custom metric type: metrics-api is 0.

I tried to use:

activationTargetValue: "0"  
targetValue: "1"  

But it doesn't work... Of course the metric exists. A different job triggers correctly with those parameters for the same metric:

activationTargetValue: "0.9"  
targetValue: "1"  

Do I have any possibilities to trigger my job in that case? Or should I reverse my metric?

[rickbrouwer]

I think that should be possible via scalingmodifiers:

https://keda.sh/docs/2.17/concepts/scaling-deployments/#scaling-modifiers

i think something like the ternary operator from the above url example:

“trig_one == 0 ? 1 : 0”

That means:
• If trigger one is 0, return 1
• Else, return 0

Now you can use:

activationTargetValue: "0"
targetValue: "1"

Can you test/check this? :) I'm curious!