Logging metric values on canary object for debugging during canary deployment

[Glaum96]

Describe the feature

Log/Print the (numeric) metric value in the actual canary object.

What problem are you trying to solve?
It is difficult to debug (for me as a newbie flagger user/consumer) why and when a metric makes a canary object fail, and roll back.

Proposed solution

Add the metric and the value of the present failure in the canary object. My team prints the canary object in our dashboard. Perhaps under status?

What do you want to happen? Add any considered drawbacks.

Any alternatives you've considered?

Is there another way to solve this problem that isn't as good a solution?

[stefanprodan]

The metric values are in the Kubernetes events emitted for a Canary object, also in Flagger logs.

Example here: https://docs.flagger.app/tutorials/istio-progressive-delivery#automated-rollback