I0521 19:40:59.906723       1 handler.go:288] Adding GroupVersion metrics.k8s.io v1beta1 to ResourceManager
I0521 19:41:00.012072       1 secure_serving.go:57] Forcing use of http/1.1 only
I0521 19:41:00.012322       1 dynamic_cafile_content.go:161] "Starting controller" name="request-header::/etc/client-ca-bundle/requestheader-client-ca-file"
I0521 19:41:00.012331       1 dynamic_cafile_content.go:161] "Starting controller" name="client-ca-bundle::/etc/client-ca-bundle/client-ca-file"
I0521 19:41:00.012508       1 dynamic_serving_content.go:135] "Starting controller" name="serving-cert::/etc/tls/private/tls.crt::/etc/tls/private/tls.key"
I0521 19:41:00.012925       1 secure_serving.go:211] Serving securely on [::]:10250
I0521 19:41:00.012963       1 tlsconfig.go:243] "Starting DynamicServingCertificateController"
E0521 19:53:32.716450       1 writers.go:123] "Unhandled Error" err="apiserver was unable to write a JSON response: http: Handler timeout" logger="UnhandledError"
E0521 19:53:32.717572       1 status.go:71] "Unhandled Error" err="apiserver received an error that is not an metav1.Status: &errors.errorString{s:\"http: Handler timeout\"}: http: Handler timeout" logger="UnhandledError"
E0521 19:53:32.718939       1 writers.go:136] "Unhandled Error" err="apiserver was unable to write a fallback JSON response: http: Handler timeout" logger="UnhandledError"
E0521 19:53:32.720126       1 timeout.go:140] "Post-timeout activity" logger="UnhandledError" timeElapsed="3.739216ms" method="GET" path="/apis/metrics.k8s.io/v1beta1" result=null