W0410 16:43:22.422773       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0410 16:43:22.423214       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0410 16:43:22.424146       1 kube-rbac-proxy.go:349] Reading certificate files
I0410 16:43:22.424408       1 kube-rbac-proxy.go:397] Starting TCP socket on :8443
I0410 16:43:22.424606       1 kube-rbac-proxy.go:404] Listening securely on :8443