StabilityLevel: metrics.ALPHA,
		},
	)

	// RuntimeOperations is a Counter that tracks the cumulative number of remote runtime operations.
	// Broken down by operation type.
	RuntimeOperations = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Subsystem:      KubeletSubsystem,
			Name:           RuntimeOperationsKey,
			Help:           "Cumulative number of runtime operations by operation type.",
			StabilityLevel: metrics.ALPHA,

		[]string{"operation", "type"},
	)
	etcdRequestCounts = compbasemetrics.NewCounterVec(
		&compbasemetrics.CounterOpts{
			Name:           "etcd_requests_total",
			Help:           "Etcd request counts for each operation and object type.",
			StabilityLevel: compbasemetrics.ALPHA,
		},
		[]string{"operation", "type"},
	)
	etcdRequestErrorCounts = compbasemetrics.NewCounterVec(
		&compbasemetrics.CounterOpts{

				StabilityLevel: metrics.STABLE,
			},
			[]string{"name", "type", "operation", "rejected"},
		),

		latenciesSummary: nil,
	}

	webhookRejection := metrics.NewCounterVec(
		&metrics.CounterOpts{
			Namespace:      namespace,
			Subsystem:      subsystem,
			Name:           "webhook_rejection_count",

// Append adds more
func (rs Registerables) Append(more ...compbasemetrics.Registerable) Registerables {
	return append(rs, more...)
}

var (
	apiserverRejectedRequestsTotal = compbasemetrics.NewCounterVec(
		&compbasemetrics.CounterOpts{
			Namespace:      namespace,
			Subsystem:      subsystem,
			Name:           "rejected_requests_total",

	Unreserve                   = "Unreserve"
	Permit                      = "Permit"
)

// All the histogram based metrics have 1ms as size for the smallest bucket.
var (
	scheduleAttempts = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Subsystem:      SchedulerSubsystem,
			Name:           "schedule_attempts_total",

	// apiserver_envelope_encryption_key_id_hash_total{apiserver_id_hash="sha256",key_id_hash="sha256",
	// provider_name="providerName",transformation_type="from_storage"} 1
	KeyIDHashTotal = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Namespace:      namespace,
			Subsystem:      subsystem,
			Name:           "key_id_hash_total",

	)

	// TODO(a-robinson): Add unit tests for the handling of these metrics once
	// the upstream library supports it.
	requestCounter = compbasemetrics.NewCounterVec(
		&compbasemetrics.CounterOpts{
			Subsystem:      APIServerComponent,
			Name:           "request_total",

			StabilityLevel: metrics.ALPHA,
		},
	)

	// ProxyHealthzTotal is the number of returned HTTP Status for each
	// healthz probe.
	ProxyHealthzTotal = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "proxy_healthz_total",
			Help:           "Cumulative proxy healthz HTTP status",
			StabilityLevel: metrics.ALPHA,
		},

		"Gauge measuring number of persistent volume claim currently unbound",
		[]string{namespaceLabel}, nil,
		metrics.ALPHA, "")

	volumeOperationErrorsMetric = metrics.NewCounterVec(
		&metrics.CounterOpts{
			Name:           "volume_operation_total_errors",
			Help:           "Total volume operation errors",
			StabilityLevel: metrics.ALPHA,
		},
		[]string{"plugin_name", "operation_name"})

	kubeutil "k8s.io/kubernetes/pkg/kubelet/util"
	"k8s.io/utils/clock"
)

// ProberResults stores the cumulative number of a probe by result as prometheus metrics.
var ProberResults = metrics.NewCounterVec(
	&metrics.CounterOpts{
		Subsystem:      "prober",
		Name:           "probe_total",
		Help:           "Cumulative number of a liveness, readiness or startup probe for a container by result.",