Pause trigger evaluation

[megacier]

Proposal

Currently, the annotation autoscaling.keda.sh/paused-replicas: "0" doc can be added to pause the scaling.

A similar annotation could be added to stop triggers evaluation as well.
Another option would be to have an annotation that prevents logging on triggers evaluation error.

Use-Case

1. Maintenance
   When doing maintenance on services used as triggers (e.g. Postgres or metric API) Keda logs error even with autoscaling.keda.sh/paused-replicas: "0" annotation

2. Night downscaling
   We downscale part of our testing infrastructure at night by setting all replicas to 0 and adding the autoscaling.keda.sh/paused-replicas: "0" annotation. However, as our scaledObject trigger is a metric API kind that targets a service that now points to 0 replicas, Keda logs errors on every evaluation.

Is this a feature you are interested in implementing yourself?

No

Anything else?

No response

[zroubalik]

This has just been implemented and will be present in the 2.11 release:
#4253