Describe the feature request
My service running on Istio and traffic from internet go into Nginx first, then proxy pass to istio ingress-gateway. So:
I was load test to my service running on Istio when reach 2000 request/s everything is OK. But when load test over 3000 request/s I see request 502 in kibana dashboard.
Everybody see this issue and optimize tcp connection created to Istio proxy ingress/sidecar proxy or increase ConnectTimeout 10s in PassThroughCluster or BlackHole.
I was increase tcp_max_connection, http_max_connection in DestinationRule but request 502 still in kibana dashboard.