I am using istio 1.3 and have used helm to generate istio manifests. I have used the below configuration to ensure that I have 2 replicas of istio-sidecar-injector.
Observer behavior: Only one pods appears to be handling all the traffic, though both the pods are in running state and there are endpoints associated with both the pods. I see AdmissionReview/ AdmissionResponse messages in the logs for only one pod and not the other. I have made almost 40 sidecar injection requests and they all were handled by only one pod.
Expected behaviour: If there are multiple replicas for any service, the expectation is that the requests should be equally distributed, but I do not see that happening.
Has anyone been able to configure HA for istio sidecar-injector service? How was it tested?