W0506 12:21:55.914745       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 12:21:55.915254       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0506 12:21:55.916450       1 kube-rbac-proxy.go:349] Reading certificate files
I0506 12:21:55.916739       1 kube-rbac-proxy.go:397] Starting TCP socket on :8443
I0506 12:21:55.917892       1 kube-rbac-proxy.go:404] Listening securely on :8443