metrics

package
v1.5.0 Latest Latest
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 Go to latest Published: Jun 3, 2024 License: Apache-2.0 Imports: 26 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var MetricsGrabbingDisabledError = errors.New("metrics grabbing disabled")

MetricsGrabbingDisabledError is an error that is wrapped by the different MetricsGrabber.Wrap functions when metrics grabbing is not supported. Tests that check metrics data should then skip the check.

Functions

func APICallToPerfData 

func APICallToPerfData(apicalls *APIResponsiveness) *e2eperftype.PerfData

APICallToPerfData transforms APIResponsiveness to PerfData.

func PrettyPrintJSON 

func PrettyPrintJSON(metrics interface{}) string

PrettyPrintJSON converts metrics to JSON format. TODO: This function should be replaced with framework.PrettyPrintJSON after solving circulary dependency between core framework and this metrics subpackage.

Types

type APICall 

type APICall struct {
	Resource    string        `json:"resource"`
	Subresource string        `json:"subresource"`
	Verb        string        `json:"verb"`
	Scope       string        `json:"scope"`
	Latency     LatencyMetric `json:"latency"`
	Count       int           `json:"count"`
}

APICall is a struct for managing API call.

type APIResponsiveness 

type APIResponsiveness struct {
	APICalls []APICall `json:"apicalls"`
}

APIResponsiveness is a struct for managing multiple API calls.

func (*APIResponsiveness) Len 

func (a *APIResponsiveness) Len() int

func (*APIResponsiveness) Less 

func (a *APIResponsiveness) Less(i, j int) bool

func (*APIResponsiveness) PrintHumanReadable 

func (a *APIResponsiveness) PrintHumanReadable() string

PrintHumanReadable returns metrics with JSON format.

func (*APIResponsiveness) PrintJSON 

func (a *APIResponsiveness) PrintJSON() string

PrintJSON returns metrics of PerfData(50, 90 and 99th percentiles) with JSON format.

func (*APIResponsiveness) SummaryKind 

func (a *APIResponsiveness) SummaryKind() string

SummaryKind returns the summary of API responsiveness.

func (*APIResponsiveness) Swap 

func (a *APIResponsiveness) Swap(i, j int)

type APIServerMetrics 

type APIServerMetrics testutil.Metrics

APIServerMetrics is metrics for API server

func (*APIServerMetrics) Equal 

func (m *APIServerMetrics) Equal(o APIServerMetrics) bool

Equal returns true if all metrics are the same as the arguments.

type ClusterAutoscalerMetrics 

type ClusterAutoscalerMetrics testutil.Metrics

ClusterAutoscalerMetrics is metrics for cluster autoscaler

func (*ClusterAutoscalerMetrics) Equal 

func (m *ClusterAutoscalerMetrics) Equal(o ClusterAutoscalerMetrics) bool

Equal returns true if all metrics are the same as the arguments.

type Collection 

type Collection struct {
	APIServerMetrics          APIServerMetrics
	ControllerManagerMetrics  ControllerManagerMetrics
	SnapshotControllerMetrics SnapshotControllerMetrics
	KubeletMetrics            map[string]KubeletMetrics
	SchedulerMetrics          SchedulerMetrics
	ClusterAutoscalerMetrics  ClusterAutoscalerMetrics
}

Collection is metrics collection of components

type ComponentCollection 

type ComponentCollection Collection

ComponentCollection is metrics collection of components.

func (*ComponentCollection) ComputeClusterAutoscalerMetricsDelta 

func (m *ComponentCollection) ComputeClusterAutoscalerMetricsDelta(before Collection)

ComputeClusterAutoscalerMetricsDelta computes the change in cluster autoscaler metrics.

func (*ComponentCollection) PrintHumanReadable 

func (m *ComponentCollection) PrintHumanReadable() string

PrintHumanReadable returns e2e metrics with JSON format.

func (*ComponentCollection) PrintJSON 

func (m *ComponentCollection) PrintJSON() string

PrintJSON returns e2e metrics with JSON format.

func (*ComponentCollection) SummaryKind 

func (m *ComponentCollection) SummaryKind() string

SummaryKind returns the summary of e2e metrics.

type ControllerManagerMetrics 

type ControllerManagerMetrics testutil.Metrics

ControllerManagerMetrics is metrics for controller manager

func (*ControllerManagerMetrics) Equal 

func (m *ControllerManagerMetrics) Equal(o ControllerManagerMetrics) bool

Equal returns true if all metrics are the same as the arguments.

type Grabber 

type Grabber struct {
	// contains filtered or unexported fields
}

Grabber provides functions which grab metrics from components

func NewMetricsGrabber 

func NewMetricsGrabber(c clientset.Interface, ec clientset.Interface, config *rest.Config, kubelets bool, scheduler bool, controllers bool, apiServer bool, clusterAutoscaler bool, snapshotController bool) (*Grabber, error)

NewMetricsGrabber prepares for grabbing metrics data from several different components. It should be called when those components are running because it needs to communicate with them to determine for which components metrics data can be retrieved.

Collecting metrics data is an optional debug feature. Not all clusters will support it. If disabled for a component, the corresponding Grab function will immediately return an error derived from MetricsGrabbingDisabledError.

func (*Grabber) Grab 

func (g *Grabber) Grab() (Collection, error)

Grab returns metrics from corresponding component

func (*Grabber) GrabFromAPIServer 

func (g *Grabber) GrabFromAPIServer() (APIServerMetrics, error)

GrabFromAPIServer returns metrics from API server

func (*Grabber) GrabFromClusterAutoscaler 

func (g *Grabber) GrabFromClusterAutoscaler() (ClusterAutoscalerMetrics, error)

GrabFromClusterAutoscaler returns metrics from cluster autoscaler

func (*Grabber) GrabFromControllerManager 

func (g *Grabber) GrabFromControllerManager() (ControllerManagerMetrics, error)

GrabFromControllerManager returns metrics from controller manager

func (*Grabber) GrabFromKubelet 

func (g *Grabber) GrabFromKubelet(nodeName string) (KubeletMetrics, error)

GrabFromKubelet returns metrics from kubelet

func (*Grabber) GrabFromScheduler 

func (g *Grabber) GrabFromScheduler() (SchedulerMetrics, error)

GrabFromScheduler returns metrics from scheduler

func (*Grabber) GrabFromSnapshotController 

func (g *Grabber) GrabFromSnapshotController(podName string, port int) (SnapshotControllerMetrics, error)

GrabFromSnapshotController returns metrics from controller manager

func (*Grabber) HasControlPlanePods 

func (g *Grabber) HasControlPlanePods() bool

HasControlPlanePods returns true if metrics grabber was able to find control-plane pods

type KubeletLatencyMetric 

type KubeletLatencyMetric struct {
	// eg: list, info, create
	Operation string
	// eg: sync_pods, pod_worker
	Method string
	// 0 <= quantile <=1, e.g. 0.95 is 95%tile, 0.5 is median.
	Quantile float64
	Latency  time.Duration
}

KubeletLatencyMetric stores metrics scraped from the kubelet server's /metric endpoint. TODO: Get some more structure around the metrics and this type

type KubeletLatencyMetrics 

type KubeletLatencyMetrics []KubeletLatencyMetric

KubeletLatencyMetrics implements sort.Interface for []KubeletMetric based on the latency field.

func GetDefaultKubeletLatencyMetrics 

func GetDefaultKubeletLatencyMetrics(ms KubeletMetrics) KubeletLatencyMetrics

GetDefaultKubeletLatencyMetrics calls GetKubeletLatencyMetrics with a set of default metricNames identifying common latency metrics. Note that the KubeletMetrics passed in should not contain subsystem prefix.

func GetKubeletLatencyMetrics 

func GetKubeletLatencyMetrics(ms KubeletMetrics, filterMetricNames sets.String) KubeletLatencyMetrics

GetKubeletLatencyMetrics filters ms to include only those contained in the metricNames set, then constructs a KubeletLatencyMetrics list based on the samples associated with those metrics.

func HighLatencyKubeletOperations 

func HighLatencyKubeletOperations(c clientset.Interface, threshold time.Duration, nodeName string, logFunc func(fmt string, args ...interface{})) (KubeletLatencyMetrics, error)

HighLatencyKubeletOperations logs and counts the high latency metrics exported by the kubelet server via /metrics.

func (KubeletLatencyMetrics) Len 

func (a KubeletLatencyMetrics) Len() int

func (KubeletLatencyMetrics) Less 

func (a KubeletLatencyMetrics) Less(i, j int) bool

func (KubeletLatencyMetrics) Swap 

func (a KubeletLatencyMetrics) Swap(i, j int)

type KubeletMetrics 

type KubeletMetrics testutil.Metrics

KubeletMetrics is metrics for kubelet

func GetKubeletMetrics 

func GetKubeletMetrics(c clientset.Interface, nodeName string) (KubeletMetrics, error)

GetKubeletMetrics gets all metrics in kubelet subsystem from specified node and trims the subsystem prefix.

func GrabKubeletMetricsWithoutProxy 

func GrabKubeletMetricsWithoutProxy(nodeName, path string) (KubeletMetrics, error)

GrabKubeletMetricsWithoutProxy retrieve metrics from the kubelet on the given node using a simple GET over http. Currently only used in integration tests.

func NewKubeletMetrics 

func NewKubeletMetrics() KubeletMetrics

NewKubeletMetrics returns new metrics which are initialized.

func (*KubeletMetrics) Equal 

func (m *KubeletMetrics) Equal(o KubeletMetrics) bool

Equal returns true if all metrics are the same as the arguments.

type LatencyMetric 

type LatencyMetric struct {
	Perc50  time.Duration `json:"Perc50"`
	Perc90  time.Duration `json:"Perc90"`
	Perc99  time.Duration `json:"Perc99"`
	Perc100 time.Duration `json:"Perc100"`
}

LatencyMetric is a struct for dashboard metrics.

type LatencySlice 

type LatencySlice []PodLatencyData

LatencySlice is an array of PodLatencyData which encapsulates pod startup latency information.

func (LatencySlice) Len 

func (a LatencySlice) Len() int

func (LatencySlice) Less 

func (a LatencySlice) Less(i, j int) bool

func (LatencySlice) Swap 

func (a LatencySlice) Swap(i, j int)

type PodLatencyData 

type PodLatencyData struct {
	// Name of the pod
	Name string
	// Node this pod was running on
	Node string
	// Latency information related to pod startuptime
	Latency time.Duration
}

PodLatencyData encapsulates pod startup latency information.

type SchedulerMetrics 

type SchedulerMetrics testutil.Metrics

SchedulerMetrics is metrics for scheduler

func (*SchedulerMetrics) Equal 

func (m *SchedulerMetrics) Equal(o SchedulerMetrics) bool

Equal returns true if all metrics are the same as the arguments.

type SnapshotControllerMetrics 

type SnapshotControllerMetrics testutil.Metrics

SnapshotControllerMetrics is metrics for controller manager

func (*SnapshotControllerMetrics) Equal 

func (m *SnapshotControllerMetrics) Equal(o SnapshotControllerMetrics) bool

Equal returns true if all metrics are the same as the arguments.

Source Files

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