envoyproxy/envoy

Tracing: upstream_cluster attribute missing when backend has no healthy replicas

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#25.887 aperta il 2 mar 2023

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Title: Tracing: upstream_cluster attribute missing when backend has no healthy replicas

Description:

Given an envoy cluster of "foo_cluster" with some number of backends that is addressed via a k8s service name "foo-service".

If "foo_cluster" doesn't have any healthy backends (e.g. they are missing entirely, or maybe crash looping), spans generated by envoy on traffic that matches "foo_cluster" are missing the "upstream_cluster" attribute.

It would be helpful if "upstream_cluster" was always populated.

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