Overload Manager: allow certain requests even when `envoy.overload_actions.stop_accepting_requests` is triggered
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area/health_checking
area/overload_manager
enhancement
help wanted
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Description
*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.
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