metrics

var (
	ContainersPerPodCount = prometheus.NewSummary(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      "containers_per_pod_count",
			Help:      "The number of containers per pod.",
		},
	)
	PodWorkerLatency = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      PodWorkerLatencyKey,
			Help:      "Latency in microseconds to sync a single pod. Broken down by operation type: create, update, or sync",
		},
		[]string{"operation_type"},
	)
	PodStartLatency = prometheus.NewSummary(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      PodStartLatencyKey,
			Help:      "Latency in microseconds for a single pod to go from pending to running.",
		},
	)
	CgroupManagerLatency = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      CgroupManagerOperationsKey,
			Help:      "Latency in microseconds for cgroup manager operations. Broken down by method.",
		},
		[]string{"operation_type"},
	)
	PodWorkerStartLatency = prometheus.NewSummary(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      PodWorkerStartLatencyKey,
			Help:      "Latency in microseconds from seeing a pod to starting a worker.",
		},
	)
	PLEGRelistLatency = prometheus.NewSummary(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      PLEGRelistLatencyKey,
			Help:      "Latency in microseconds for relisting pods in PLEG.",
		},
	)
	PLEGRelistInterval = prometheus.NewSummary(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      PLEGRelistIntervalKey,
			Help:      "Interval in microseconds between relisting in PLEG.",
		},
	)
	// Metrics of remote runtime operations.
	RuntimeOperations = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Subsystem: KubeletSubsystem,
			Name:      RuntimeOperationsKey,
			Help:      "Cumulative number of runtime operations by operation type.",
		},
		[]string{"operation_type"},
	)
	RuntimeOperationsLatency = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      RuntimeOperationsLatencyKey,
			Help:      "Latency in microseconds of runtime operations. Broken down by operation type.",
		},
		[]string{"operation_type"},
	)
	RuntimeOperationsErrors = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Subsystem: KubeletSubsystem,
			Name:      RuntimeOperationsErrorsKey,
			Help:      "Cumulative number of runtime operation errors by operation type.",
		},
		[]string{"operation_type"},
	)
	EvictionStatsAge = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      EvictionStatsAgeKey,
			Help:      "Time between when stats are collected, and when pod is evicted based on those stats by eviction signal",
		},
		[]string{"eviction_signal"},
	)
	DevicePluginRegistrationCount = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Subsystem: KubeletSubsystem,
			Name:      DevicePluginRegistrationCountKey,
			Help:      "Cumulative number of device plugin registrations. Broken down by resource name.",
		},
		[]string{"resource_name"},
	)
	DevicePluginAllocationLatency = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Subsystem: KubeletSubsystem,
			Name:      DevicePluginAllocationLatencyKey,
			Help:      "Latency in microseconds to serve a device plugin Allocation request. Broken down by resource name.",
		},
		[]string{"resource_name"},
	)

	AssignedConfig = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Subsystem: KubeletSubsystem,
			Name:      AssignedConfigKey,
			Help:      "The node's understanding of intended config. The count is always 1.",
		},
		[]string{ConfigSourceLabelKey, ConfigUIDLabelKey, ConfigResourceVersionLabelKey, KubeletConfigKeyLabelKey},
	)
	ActiveConfig = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Subsystem: KubeletSubsystem,
			Name:      ActiveConfigKey,
			Help:      "The config source the node is actively using. The count is always 1.",
		},
		[]string{ConfigSourceLabelKey, ConfigUIDLabelKey, ConfigResourceVersionLabelKey, KubeletConfigKeyLabelKey},
	)
	LastKnownGoodConfig = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Subsystem: KubeletSubsystem,
			Name:      LastKnownGoodConfigKey,
			Help:      "The config source the node will fall back to when it encounters certain errors. The count is always 1.",
		},
		[]string{ConfigSourceLabelKey, ConfigUIDLabelKey, ConfigResourceVersionLabelKey, KubeletConfigKeyLabelKey},
	)
	ConfigError = prometheus.NewGauge(
		prometheus.GaugeOpts{
			Subsystem: KubeletSubsystem,
			Name:      ConfigErrorKey,
			Help:      "This metric is true (1) if the node is experiencing a configuration-related error, false (0) otherwise.",
		},
	)
)