newrelic-istio-adapter OOMKilled

[shaharr-ma]

Describe the bug

newrelic-istio-adapter is getting OOMKilled on heavy-load and as a result Mixer CPU is getting high and crash due to:

warn grpcAdapter unable to connect to:/metric.HandleMetricService/HandleMetric, newrelic-istio-adapter.istio-system.svc.cluster.local:80
error api Report failed: 1 error occurred:
* rpc error: code = Unavailable desc = all SubConns are in TransientFailure, latest connection error: connection error: desc = "transport: Error while dialing dial tcp: lookup newrelic-istio-adapter.istio-system.svc.cluster.local on 172.20.0.10:53: no such host"

To Reproduce

newrelic-istio-adapter is getting OOMKilled on heavy-load.

Expected behavior

HPA ?

Version information (please complete the following information):

• newrelic-istio-adapter: 2.0.1
• EKS: v1.15
• Istio: 1.4