W0506 12:48:20.291599       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0506 12:48:20.292855       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0506 12:48:20.293991       1 kube-rbac-proxy.go:349] Reading certificate files
I0506 12:48:20.294303       1 kube-rbac-proxy.go:397] Starting TCP socket on :9154
I0506 12:48:20.294566       1 kube-rbac-proxy.go:404] Listening securely on :9154