W0417 18:42:31.247733       1 deprecated.go:66] 
==== Removed Flag Warning ======================

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

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I0417 18:42:31.247819       1 kube-rbac-proxy.go:532] Reading config file: /etc/kubernetes/crio-metrics-proxy.cfg
I0417 18:42:31.250085       1 kube-rbac-proxy.go:235] Valid token audiences: 
I0417 18:42:31.250349       1 dynamic_cafile_content.go:161] "Starting controller" name="client-ca::/etc/kubernetes/kubelet-ca.crt"
I0417 18:42:31.251646       1 kube-rbac-proxy.go:349] Reading certificate files
I0417 18:42:31.251838       1 kube-rbac-proxy.go:397] Starting TCP socket on :9637
I0417 18:42:31.252145       1 kube-rbac-proxy.go:404] Listening securely on :9637