W0420 11:42:41.378640       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0420 11:42:41.379088       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0420 11:42:41.380005       1 kube-rbac-proxy.go:349] Reading certificate files
I0420 11:42:41.380285       1 kube-rbac-proxy.go:397] Starting TCP socket on :9154
I0420 11:42:41.380515       1 kube-rbac-proxy.go:404] Listening securely on :9154