Documenation states that the autoscaling can be verified by:

"... reviewing the Custom Metrics Autoscaler Operator logs for messages similar to the following:
Successfully set ScaleTarget replica count
Successfully updated ScaleTarget"

These logs do not appear to be emitted by the Operator into logs

    

    1. Deploy an OpenShift 4.x cluster
    2. Install the Custom Metrics Autoscaler Operator
    3. Create an example loadtesting project
    4. Create a scaledobject resource with a CPU trigger to manage autoscaling
    5. Generate a load and observe the pod replica count increase
    6. Check the custom metrics autoscaler operator pod logs
    

Log messages suggested by official docs do not appear
    

Recommend alternative method for validation
    

The operator pod logs contain "Reconciling" messages which seem to indicate something happened, but not anything meaningful to a user