Evnoy ExtAuth GRPC re-connecting

[zilinjak]

Description:

It seems that envoy creates new connection to ExtAuth GRPC every time it needs to be invoked, which is not ideal for latency.

Repro steps:

Install Envoy and connect it to GRPC service for ExtAuth. I can't really show our ExtAuth but this should be sufficient.

Environment:

K8S deployment of EnvoyGateway + K8S deployment of grpc service

Config

  extAuth:
    failOpen: true
    grpc:
      backendRefs:
        - group: ''
          kind: Service
          name: ...
          port: 8080

Note

Maybe I'm not right, but i wasn't able to find that info in docs