metrics

Documentation

Index

• Variables
• func RegisterMetrics()
• func SinceInSeconds(start time.Time) float64

Variables

var (
	// SyncProxyRulesLatency is the latency of one round of kube-proxy syncing proxy rules.
	SyncProxyRulesLatency = metrics.NewHistogram(
		&metrics.HistogramOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_duration_seconds",
			Help:           "SyncProxyRules latency in seconds",
			Buckets:        metrics.ExponentialBuckets(0.001, 2, 15),
			StabilityLevel: metrics.ALPHA,
		},
	)

	// SyncProxyRulesLastTimestamp is the timestamp proxy rules were last
	// successfully synced.
	SyncProxyRulesLastTimestamp = metrics.NewGauge(
		&metrics.GaugeOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_last_timestamp_seconds",
			Help:           "The last time proxy rules were successfully synced",
			StabilityLevel: metrics.ALPHA,
		},
	)

	// NetworkProgrammingLatency is defined as the time it took to program the network - from the time
	// the service or pod has changed to the time the change was propagated and the proper kube-proxy
	// rules were synced. Exported for each endpoints object that were part of the rules sync.
	// See https://github.com/kubernetes/community/blob/master/sig-scalability/slos/network_programming_latency.md
	// Note that the metrics is partially based on the time exported by the endpoints controller on
	// the master machine. The measurement may be inaccurate if there is a clock drift between the
	// node and master machine.
	NetworkProgrammingLatency = metrics.NewHistogram(
		&metrics.HistogramOpts{
			Subsystem: kubeProxySubsystem,
			Name:      "network_programming_duration_seconds",
			Help:      "In Cluster Network Programming Latency in seconds",
			Buckets: merge(
				metrics.LinearBuckets(0.25, 0.25, 2),
				metrics.LinearBuckets(1, 1, 59),
				metrics.LinearBuckets(60, 5, 12),
				metrics.LinearBuckets(120, 30, 7),
			),
			StabilityLevel: metrics.ALPHA,
		},
	)

	// EndpointChangesPending is the number of pending endpoint changes that
	// have not yet been synced to the proxy.
	EndpointChangesPending = metrics.NewGauge(
		&metrics.GaugeOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_endpoint_changes_pending",
			Help:           "Pending proxy rules Endpoint changes",
			StabilityLevel: metrics.ALPHA,
		},
	)

	// EndpointChangesTotal is the number of endpoint changes that the proxy
	// has seen.
	EndpointChangesTotal = metrics.NewCounter(
		&metrics.CounterOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_endpoint_changes_total",
			Help:           "Cumulative proxy rules Endpoint changes",
			StabilityLevel: metrics.ALPHA,
		},
	)

	// ServiceChangesPending is the number of pending service changes that
	// have not yet been synced to the proxy.
	ServiceChangesPending = metrics.NewGauge(
		&metrics.GaugeOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_service_changes_pending",
			Help:           "Pending proxy rules Service changes",
			StabilityLevel: metrics.ALPHA,
		},
	)

	// ServiceChangesTotal is the number of service changes that the proxy has
	// seen.
	ServiceChangesTotal = metrics.NewCounter(
		&metrics.CounterOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_service_changes_total",
			Help:           "Cumulative proxy rules Service changes",
			StabilityLevel: metrics.ALPHA,
		},
	)

	// IptablesRestoreFailuresTotal is the number of iptables restore failures that the proxy has
	// seen.
	IptablesRestoreFailuresTotal = metrics.NewCounter(
		&metrics.CounterOpts{
			Subsystem:      kubeProxySubsystem,
			Name:           "sync_proxy_rules_iptables_restore_failures_total",
			Help:           "Cumulative proxy iptables restore failures",
			StabilityLevel: metrics.ALPHA,
		},
	)
)

Functions

func RegisterMetrics

func RegisterMetrics()

RegisterMetrics registers kube-proxy metrics.

func SinceInSeconds

func SinceInSeconds(start time.Time) float64

SinceInSeconds gets the time since the specified start in seconds.