metrics

Documentation

Index

• Constants
• func GetMetricUtilizationRatio(metrics PodMetricsInfo, targetUtilization int64) (utilizationRatio float64, currentUtilization int64)
• func GetResourceUtilizationRatio(metrics PodMetricsInfo, requests map[string]int64, targetUtilization int32) (utilizationRatio float64, currentUtilization int32, rawAverageValue int64, ...)
• type HeapsterMetricsClient
  • func (h *HeapsterMetricsClient) GetObjectMetric(metricName string, namespace string, ...) (int64, time.Time, error)
  • func (h *HeapsterMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)
  • func (h *HeapsterMetricsClient) GetResourceMetric(resource v1.ResourceName, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)
• type MetricsClient
  • func NewHeapsterMetricsClient(client clientset.Interface, namespace, scheme, service, port string) MetricsClient
• type PodMetricsInfo

Constants

const (
	DefaultHeapsterNamespace = "kube-system"
	DefaultHeapsterScheme    = "http"
	DefaultHeapsterService   = "heapster"
	DefaultHeapsterPort      = "" // use the first exposed port on the service
)

Functions

func GetMetricUtilizationRatio

func GetMetricUtilizationRatio(metrics PodMetricsInfo, targetUtilization int64) (utilizationRatio float64, currentUtilization int64)

GetMetricUtilizationRatio takes in a set of metrics and a target utilization value, and calcuates the ratio of desired to actual utilization (returning that and the actual utilization)

func GetResourceUtilizationRatio

func GetResourceUtilizationRatio(metrics PodMetricsInfo, requests map[string]int64, targetUtilization int32) (utilizationRatio float64, currentUtilization int32, rawAverageValue int64, err error)

GetResourceUtilizationRatio takes in a set of metrics, a set of matching requests, and a target utilization percentage, and calcuates the the ratio of desired to actual utilization (returning that, the actual utilization, and the raw average value)

Types

type HeapsterMetricsClient

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

func (*HeapsterMetricsClient) GetObjectMetric

func (h *HeapsterMetricsClient) GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error)

func (*HeapsterMetricsClient) GetRawMetric

func (h *HeapsterMetricsClient) GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)

func (*HeapsterMetricsClient) GetResourceMetric

func (h *HeapsterMetricsClient) GetResourceMetric(resource v1.ResourceName, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)

type MetricsClient

type MetricsClient interface {
	// GetResourceMetric gets the given resource metric (and an associated oldest timestamp)
	// for all pods matching the specified selector in the given namespace
	GetResourceMetric(resource v1.ResourceName, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)

	// GetRawMetric gets the given metric (and an associated oldest timestamp)
	// for all pods matching the specified selector in the given namespace
	GetRawMetric(metricName string, namespace string, selector labels.Selector) (PodMetricsInfo, time.Time, error)

	// GetObjectMetric gets the given metric (and an associated timestamp) for the given
	// object in the given namespace
	GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference) (int64, time.Time, error)
}

MetricsClient knows how to query a remote interface to retrieve container-level resource metrics as well as pod-level arbitrary metrics

func NewHeapsterMetricsClient

func NewHeapsterMetricsClient(client clientset.Interface, namespace, scheme, service, port string) MetricsClient

type PodMetricsInfo

type PodMetricsInfo map[string]int64

PodMetricsInfo contains pod metric values as a map from pod names to metric values (the metric values are expected to be the metric as a milli-value)