envoyproxy/envoy
Voir sur GitHubreduce health check rate if there is active succeeding traffic
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#9 351 ouverte le 13 déc. 2019
area/perfarea/service discoveryhelp wanted
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Description
This came up from a conversation I think with @snowp at KubeCon/EnvoyCon: we should be able to optionally lower the active health check rate if we are receiving a sufficient amount of passive traffic. As long as the upstream is able to send x-envoy-immediate-health-check-fail (as an upstream Envoy would do), draining should still be possible even in the passive case.
This would potentially mitigate some HC traffic explosion without having to resort to centralized HC.