)
	legacyregistry.MustRegister(certificateRenewFailure)

	certificateRotationAge := compbasemetrics.NewHistogram(
		&compbasemetrics.HistogramOpts{
			Subsystem: metrics.KubeletSubsystem,
			Name:      "certificate_manager_server_rotation_seconds",
			Help:      "Histogram of the number of seconds the previous certificate lived before being rotated.",
			Buckets: []float64{
				60,        // 1  minute
				3600,      // 1  hour