W0509 08:12:09.640763       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0509 08:12:09.641675       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0509 08:12:09.643896       1 kube-rbac-proxy.go:349] Reading certificate files
I0509 08:12:09.644303       1 kube-rbac-proxy.go:397] Starting TCP socket on 0.0.0.0:8443
I0509 08:12:09.644514       1 kube-rbac-proxy.go:404] Listening securely on 0.0.0.0:8443