[]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{

	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",

			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,
		},