> Is it possible to drop a set of metrics based on the output of another
metric in the metric_relabeling phase
No.
> or using any recording rule ?
Yes. Write a PromQL query which filters the metrics in the way that you
want, and when it's working (in the web UI), put it in a recording rule.
You haven't given exact examples of any of the metrics in question (with
complete label sets), but a starting point might look like this:
kube_pod_status_phase unless on (uid, pod)
kube_pod_info{created_by_kind="<none>"}
That will drop any entries in the kube_pod_status_phase vector which match
on both the uid and pod labels with the expression on the RHS.
Documentation for logical/set binary operators is
here:
https://prometheus.io/docs/prometheus/latest/querying/operators/#logical-set-binary-operators
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