W0430 10:39:25.064106       1 deprecated.go:66] 
==== Removed Flag Warning ======================

logtostderr is removed in the k8s upstream and has no effect any more.

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I0430 10:39:25.064845       1 kube-rbac-proxy.go:233] Valid token audiences: 
I0430 10:39:25.066464       1 kube-rbac-proxy.go:347] Reading certificate files
I0430 10:39:25.066793       1 kube-rbac-proxy.go:395] Starting TCP socket on :8443
I0430 10:39:25.067069       1 kube-rbac-proxy.go:402] Listening securely on :8443