envoyproxy/envoy
Overload Manager: allow certain requests even when `envoy.overload_actions.stop_accepting_requests` is triggered
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#20,002 opened on 2022/02/16
area/health_checkingarea/overload_managerenhancementhelp wanted
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説明
Title: being able to skip certain requests when envoy.overload_actions.stop_accepting_requests is triggered in overload manager
Description:
We want to be able to configure overload manager to always let certain requests pass through either based on headers or paths when envoy.overload_actions.stop_accepting_requests is triggered.
Our use case is we are considering to always pass through F5 load balancer's health check traffic. One incident we encountered is large nodes of our envoy cluster behind F5 are overloaded. Overload manager in these nodes failed F5 health check which cause a drastic increase of load in healthy nodes and cascading the failure to entire cluster.