native

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 Go to latest Published: Feb 27, 2023 License: Apache-2.0 Imports: 26 Imported by: 37

Documentation

Index

Constants

View Source 
const (
	// DefaultReclaimedMilliCPURequest defines default milli reclaimed milli-cpu request number.
	DefaultReclaimedMilliCPURequest int64 = 100 // 0.1 core
	// DefaultReclaimedMemoryRequest defines default reclaimed memory request size.
	DefaultReclaimedMemoryRequest int64 = 200 * 1024 * 1024 // 200 MiB
)

For each of these resources, a pod that doesn't request the resource explicitly will be treated as having requested the amount indicated below, for the purpose of computing priority only. This ensures that when scheduling zero-request pods, such pods will not all be scheduled to the machine with the smallest in-use request, and that when scheduling regular pods, such pods will not see zero-request pods as consuming no resources whatsoever. We chose these values to be similar to the resources that we give to cluster addon pods (#10653). But they are pretty arbitrary. As described in #11713, we use request instead of limit to deal with resource requirements.

View Source 
const ContainerMetricPortName = "metrics"
View Source 
const ContainerMetricStorePortName = "store"

Variables

View Source 
var GetPodHostIP = func(pod *v1.Pod) (string, error) {
	if pod == nil {
		return "", fmt.Errorf("empty pod")
	}

	hostIP := pod.Status.HostIP
	if len(hostIP) == 0 {
		return "", fmt.Errorf("empty hostIP")
	}

	return hostIP, nil
}

Functions

func AddResources 

func AddResources(a, b v1.ResourceList) v1.ResourceList

AddResources sums up two ResourceList, and returns the summed as results.

func ApplyPodResources 

func ApplyPodResources(resources map[string]v1.ResourceRequirements, pod *v1.Pod)

ApplyPodResources is used to apply map[string]v1.ResourceRequirements to the given pod, and ignore the container-names / resource-names that not appear in the given map param

func CalculateUnstructuredTotalResources 

func CalculateUnstructuredTotalResources(object *unstructured.Unstructured) (v1.ResourceList, v1.ResourceList)

CalculateUnstructuredTotalResources returns the total resources of the unstructured object's pod template

func CheckDaemonPod 

func CheckDaemonPod(pod *v1.Pod) bool

CheckDaemonPod returns true if pod is for DaemonSet

func CheckObjectEqual 

func CheckObjectEqual(obj1, obj2 metav1.Object) bool

CheckObjectEqual returns true if uid equals or the namespace/name pair equal

func CheckQosClassChanged 

func CheckQosClassChanged(resources map[string]v1.ResourceRequirements, pod *v1.Pod) (bool, error)

CheckQosClassChanged checks whether the pod's QosClass will change if annotationResources are applied to this pod

func EmitResourceMetrics 

func EmitResourceMetrics(name string, resourceList v1.ResourceList,
	tags map[string]string, emitter metrics.MetricEmitter)

EmitResourceMetrics emit metrics for given ResourceList.

func FilterOutDeletingUnstructured 

func FilterOutDeletingUnstructured(objList []*unstructured.Unstructured) []*unstructured.Unstructured

func FilterOutSkipEvictionPods 

func FilterOutSkipEvictionPods(pods []*v1.Pod, filterOutAnnotations, filterOutLabels sets.String) []*v1.Pod

FilterOutSkipEvictionPods return pods should be candidates to evict including native critical pods and user-defined filtered pods

func FilterPods 

func FilterPods(pods []*v1.Pod, filterFunc func(*v1.Pod) (bool, error)) []*v1.Pod

FilterPods filter pods that filter func return true.

func GenerateContainerName 

func GenerateContainerName(containerName string) consts.ContainerName

GenerateContainerName return a unique key for a container

func GenerateNamespaceNameKey 

func GenerateNamespaceNameKey(namespace, name string) string

GenerateNamespaceNameKey generate uniq key by concatenating namespace and name.

func GenerateObjectOwnerReferenceKey 

func GenerateObjectOwnerReferenceKey(reference metav1.OwnerReference) string

GenerateObjectOwnerReferenceKey is to generate a unique key by owner reference

func GeneratePodContainerName 

func GeneratePodContainerName(podName, containerName string) consts.PodContainerName

GeneratePodContainerName return a unique key for a container in a pod

func GenerateUniqGVRNameKey 

func GenerateUniqGVRNameKey(gvr string, workload metav1.Object) (string, error)

GenerateUniqGVRNameKey generate a uniq key (without UID) for the GVR and its corresponding object.

func GenerateUniqObjectNameKey 

func GenerateUniqObjectNameKey(obj metav1.Object) string

GenerateUniqObjectNameKey generate a uniq key (without UID) for the given object.

func GenerateUniqObjectUIDKey 

func GenerateUniqObjectUIDKey(obj metav1.Object) string

GenerateUniqObjectUIDKey generate a uniq key (including UID) for the given object.

func GetCPUQuantity 

func GetCPUQuantity(resourceList v1.ResourceList) resource.Quantity

GetCPUQuantity returns cpu quantity for resourceList. since we may have different representations for cpu resource name, the prioritizes will be: native cpu name -> reclaimed milli cpu name

func GetMemoryQuantity 

func GetMemoryQuantity(resourceList v1.ResourceList) resource.Quantity

GetMemoryQuantity returns memory quantity for resourceList. since we may have different representations for memory resource name, the prioritizes will be: native memory name -> reclaimed memory name

func GetNamespacedNameListFromSlice 

func GetNamespacedNameListFromSlice(podSlice []*v1.Pod) []string

GetNamespacedNameListFromSlice returns a slice of namespaced name

func GetNonzeroQoSRequests 

func GetNonzeroQoSRequests(requests *v1.ResourceList) (int64, int64)

GetNonzeroQoSRequests returns the default reclaimed_millicpu and reclaimed_memory resource request if none is found or what is provided on the request.

func GetPodListForWorkload 

func GetPodListForWorkload(workloadObj runtime.Object, podIndexer cache.Indexer, labelKeyList []string, podLister corelisters.PodLister) ([]*core.Pod, error)

GetPodListForWorkload returns pod list that belong to the given workload we will use label selector to find pods, and this may require that the given workload is limited to several selected objects.

func GetPodNamespaceNameKeyMap 

func GetPodNamespaceNameKeyMap(podList []*v1.Pod) map[string]*v1.Pod

func GetRequestForQoSResource 

func GetRequestForQoSResource(resource v1.ResourceName, requests *v1.ResourceList, nonZero bool) int64

GetRequestForQoSResource returns the requested values unless nonZero is true and there is no defined request for CPU and memory. If nonZero is true and the resource has no defined request for CPU or memory, it returns a default value.

func GetUnstructuredSelector 

func GetUnstructuredSelector(object *unstructured.Unstructured) (labels.Selector, error)

GetUnstructuredSelector parse a unstructured object and return its labelSelector (for pods)

func IsAssignedPod 

func IsAssignedPod(pod *v1.Pod) bool

IsAssignedPod selects pods that are assigned (scheduled and running).

func IsResourceGreaterThan 

func IsResourceGreaterThan(a resource.Quantity, b resource.Quantity) bool

IsResourceGreaterThan checks if recommended resource is scaling down

func MakeWorkloadInformers 

func MakeWorkloadInformers(
	workLoads []string,
	mapper meta.RESTMapper,
	dynamicInformerFactory dynamicinformer.DynamicSharedInformerFactory,
) (map[string]WorkloadInformer, error)

MakeWorkloadInformers generate informers for workloads dynamically with rest-mapper

func MergeResources 

func MergeResources(updateList ...v1.ResourceList) v1.ResourceList

MergeResources merge multi ResourceList into one ResourceList, the resource of same resource name in all ResourceList we only use the first merged one.

func NewPodSourceImpList 

func NewPodSourceImpList(pods []*v1.Pod) general.SourceList

func NodeReady 

func NodeReady(node *v1.Node) bool

func ObjectOwnerReferenceIndex 

func ObjectOwnerReferenceIndex(o interface{}) ([]string, error)

ObjectOwnerReferenceIndex is used by informer to index a resource by owner

func ParseContainerName 

func ParseContainerName(key consts.ContainerName) string

ParseContainerName parse key and return container name

func ParseHostPortsForContainer 

func ParseHostPortsForContainer(container *v1.Container, portName string) []int32

ParseHostPortsForContainer gets host port from container spec

func ParseHostPortsForPod 

func ParseHostPortsForPod(pod *v1.Pod, portName string) []int32

ParseHostPortsForPod gets host ports from pod spec

func ParsePodContainerName 

func ParsePodContainerName(key consts.PodContainerName) (string, string, error)

ParsePodContainerName parse key and return pod name and container name

func ParseUniqGVRNameKey 

func ParseUniqGVRNameKey(key string) (gvr string, namespace string, name string, err error)

ParseUniqGVRNameKey parse the given key into GPR and namespace/name

func PodAndContainersAreTerminal 

func PodAndContainersAreTerminal(pod *v1.Pod) (containersTerminal, podWorkerTerminal bool)

func PodAnnotationFilter 

func PodAnnotationFilter(pod *v1.Pod, key, value string) bool

PodAnnotationFilter is used to filter pods annotated with a pair of specific key and value

func PodCPURequestCmpFunc 

func PodCPURequestCmpFunc(i1, i2 interface{}) int

PodCPURequestCmpFunc sorts cpu request of pods with less comparison

func PodIsActive 

func PodIsActive(pod *v1.Pod) bool

PodIsActive returns whether the pod is not terminated.

func PodIsReady 

func PodIsReady(pod *v1.Pod) bool

PodIsReady returns whether the pod is at ready state.

func PodIsTerminated 

func PodIsTerminated(pod *v1.Pod) bool

PodIsTerminated returns whether the pod is at terminal state.

func PodPriorityCmpFunc 

func PodPriorityCmpFunc(i1, i2 interface{}) int

PodPriorityCmpFunc sorts priority of pods with greater comparison

func PodResourceDiff 

func PodResourceDiff(pod *v1.Pod, containerResourcesToUpdate map[string]v1.ResourceRequirements) bool

PodResourceDiff checks if pod resources (both for requests and limits) are NOT the same as the given resource map,

func ResourceQuantityToInt64Value 

func ResourceQuantityToInt64Value(resourceName v1.ResourceName, quantity resource.Quantity) int64

ResourceQuantityToInt64Value returns the int64 value according to its resource name

func ResourcesEqual 

func ResourcesEqual(a, b v1.ResourceList) bool

ResourcesEqual checks whether the given resources are equal with each other

func SumUpPodLimitResources 

func SumUpPodLimitResources(pod *v1.Pod) v1.ResourceList

SumUpPodLimitResources sum up resources in all containers request init container is included (count on the max limit of all init containers)

func SumUpPodRequestResources 

func SumUpPodRequestResources(pod *v1.Pod) v1.ResourceList

SumUpPodRequestResources sum up resources in all containers request init container is included (count on the max request of all init containers)

func ToSchemaGVR 

func ToSchemaGVR(group, version, resource string) schema.GroupVersionResource

func ToUnstructured 

func ToUnstructured(obj interface{}) (*unstructured.Unstructured, error)

func TrimContainerIDPrefix 

func TrimContainerIDPrefix(id string) string

TrimContainerIDPrefix is used to parse the specific containerID out of the whole containerID info

func VisitUnstructuredAncestors 

func VisitUnstructuredAncestors(object *unstructured.Unstructured, unstructuredMap map[schema.GroupVersionKind]cache.GenericLister,
	handleFunc func(owner *unstructured.Unstructured) bool) bool

VisitUnstructuredAncestors is to walk through all the ancestors of the given object, during this process, we will try to handle each ancestor with the given util function. if the handleFunc returns true, it means that we should continue the walking process for other ancestors, otherwise, we break the process and return.

Types

type PodLabelIndexer 

type PodLabelIndexer string

func (PodLabelIndexer) IndexFunc 

func (p PodLabelIndexer) IndexFunc(obj interface{}) ([]string, error)

IndexFunc is used to construct informer index for labels in pod

type PodSourceList 

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

func (*PodSourceList) GetSource 

func (pl *PodSourceList) GetSource(index int) interface{}

func (*PodSourceList) Len 

func (pl *PodSourceList) Len() int

func (*PodSourceList) SetSource 

func (pl *PodSourceList) SetSource(index int, p interface{})

type QoSResource 

type QoSResource struct {
	ReclaimedMilliCPU int64
	ReclaimedMemory   int64
}

QoSResource is a collection of compute resource.

func CalculateQoSResource 

func CalculateQoSResource(pod *v1.Pod) (res QoSResource, non0CPU int64, non0Mem int64)

CalculateQoSResource calculates the QoS Resource of a Pod resourceRequest = max(sum(podSpec.Containers), podSpec.InitContainers) + overHead

func (*QoSResource) Add 

func (r *QoSResource) Add(rl v1.ResourceList)

Add adds ResourceList into QoSResource.

func (*QoSResource) SetMaxResource 

func (r *QoSResource) SetMaxResource(rl v1.ResourceList)

SetMaxResource compares with ResourceList and takes max value for each QoSResource.

type WorkloadInformer 

type WorkloadInformer struct {
	GVK      *schema.GroupVersionKind
	GVR      *schema.GroupVersionResource
	Informer informers.GenericInformer
}

WorkloadInformer keeps the informer-related contents for each workload

Source Files

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