W0504 20:38:21.555358       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0504 20:38:21.555433       1 kube-rbac-proxy.go:532] Reading config file: /etc/kubernetes/crio-metrics-proxy.cfg
I0504 20:38:21.558473       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0504 20:38:21.558782       1 dynamic_cafile_content.go:161] "Starting controller" name="client-ca::/etc/kubernetes/kubelet-ca.crt"
I0504 20:38:21.561260       1 kube-rbac-proxy.go:349] Reading certificate files
I0504 20:38:21.561663       1 kube-rbac-proxy.go:397] Starting TCP socket on :9637
I0504 20:38:21.562018       1 kube-rbac-proxy.go:404] Listening securely on :9637