W0424 12:20:12.020137       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0424 12:20:12.020379       1 kube-rbac-proxy.go:532] Reading config file: /etc/kube-rbac-proxy/config-file.yaml
I0424 12:20:12.021119       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0424 12:20:12.031655       1 kube-rbac-proxy.go:349] Reading certificate files
I0424 12:20:12.032387       1 kube-rbac-proxy.go:397] Starting TCP socket on 0.0.0.0:9001
I0424 12:20:12.032843       1 kube-rbac-proxy.go:404] Listening securely on 0.0.0.0:9001