nodeinfo

package
v1.16.3 Latest Latest
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 Go to latest Published: Oct 23, 2019 License: Apache-2.0 Imports: 12 Imported by: 0

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Constants

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const DefaultBindAllHostIP = "0.0.0.0"

DefaultBindAllHostIP defines the default ip address used to bind to all host.

Variables

This section is empty.

Functions

func CreateNodeNameToInfoMap 

func CreateNodeNameToInfoMap(pods []*v1.Pod, nodes []*v1.Node) map[string]*NodeInfo

CreateNodeNameToInfoMap obtains a list of pods and pivots that list into a map where the keys are node names and the values are the aggregated information for that node.

func GetPodKey 

func GetPodKey(pod *v1.Pod) (string, error)

GetPodKey returns the string key of a pod.

Types

type HostPortInfo 

type HostPortInfo map[string]map[ProtocolPort]struct{}

HostPortInfo stores mapping from ip to a set of ProtocolPort

func (HostPortInfo) Add 

func (h HostPortInfo) Add(ip, protocol string, port int32)

Add adds (ip, protocol, port) to HostPortInfo

func (HostPortInfo) CheckConflict 

func (h HostPortInfo) CheckConflict(ip, protocol string, port int32) bool

CheckConflict checks if the input (ip, protocol, port) conflicts with the existing ones in HostPortInfo.

func (HostPortInfo) Len 

func (h HostPortInfo) Len() int

Len returns the total number of (ip, protocol, port) tuple in HostPortInfo

func (HostPortInfo) Remove 

func (h HostPortInfo) Remove(ip, protocol string, port int32)

Remove removes (ip, protocol, port) from HostPortInfo

type ImageStateSummary 

type ImageStateSummary struct {
	// Size of the image
	Size int64
	// Used to track how many nodes have this image
	NumNodes int
}

ImageStateSummary provides summarized information about the state of an image.

type NodeInfo 

type NodeInfo struct {

	// TransientInfo holds the information pertaining to a scheduling cycle. This will be destructed at the end of
	// scheduling cycle.
	// TODO: @ravig. Remove this once we have a clear approach for message passing across predicates and priorities.
	TransientInfo *TransientSchedulerInfo
	// contains filtered or unexported fields
}

NodeInfo is node level aggregated information.

func NewNodeInfo 

func NewNodeInfo(pods ...*v1.Pod) *NodeInfo

NewNodeInfo returns a ready to use empty NodeInfo object. If any pods are given in arguments, their information will be aggregated in the returned object.

func (*NodeInfo) AddPod 

func (n *NodeInfo) AddPod(pod *v1.Pod)

AddPod adds pod information to this NodeInfo.

func (*NodeInfo) AllocatableResource 

func (n *NodeInfo) AllocatableResource() Resource

AllocatableResource returns allocatable resources on a given node.

func (*NodeInfo) AllowedPodNumber 

func (n *NodeInfo) AllowedPodNumber() int

AllowedPodNumber returns the number of the allowed pods on this node.

func (*NodeInfo) Clone 

func (n *NodeInfo) Clone() *NodeInfo

Clone returns a copy of this node.

func (*NodeInfo) Filter 

func (n *NodeInfo) Filter(pod *v1.Pod) bool

Filter implements PodFilter interface. It returns false only if the pod node name matches NodeInfo.node and the pod is not found in the pods list. Otherwise, returns true.

func (*NodeInfo) FilterOutPods 

func (n *NodeInfo) FilterOutPods(pods []*v1.Pod) []*v1.Pod

FilterOutPods receives a list of pods and filters out those whose node names are equal to the node of this NodeInfo, but are not found in the pods of this NodeInfo.

Preemption logic simulates removal of pods on a node by removing them from the corresponding NodeInfo. In order for the simulation to work, we call this method on the pods returned from SchedulerCache, so that predicate functions see only the pods that are not removed from the NodeInfo.

func (*NodeInfo) GetGeneration 

func (n *NodeInfo) GetGeneration() int64

GetGeneration returns the generation on this node.

func (*NodeInfo) ImageStates 

func (n *NodeInfo) ImageStates() map[string]*ImageStateSummary

ImageStates returns the state information of all images.

func (*NodeInfo) Node 

func (n *NodeInfo) Node() *v1.Node

Node returns overall information about this node.

func (*NodeInfo) NonZeroRequest 

func (n *NodeInfo) NonZeroRequest() Resource

NonZeroRequest returns aggregated nonzero resource request of pods on this node.

func (*NodeInfo) Pods 

func (n *NodeInfo) Pods() []*v1.Pod

Pods return all pods scheduled (including assumed to be) on this node.

func (*NodeInfo) PodsWithAffinity 

func (n *NodeInfo) PodsWithAffinity() []*v1.Pod

PodsWithAffinity return all pods with (anti)affinity constraints on this node.

func (*NodeInfo) RemoveNode 

func (n *NodeInfo) RemoveNode(node *v1.Node) error

RemoveNode removes the overall information about the node.

func (*NodeInfo) RemovePod 

func (n *NodeInfo) RemovePod(pod *v1.Pod) error

RemovePod subtracts pod information from this NodeInfo.

func (*NodeInfo) RequestedResource 

func (n *NodeInfo) RequestedResource() Resource

RequestedResource returns aggregated resource request of pods on this node.

func (*NodeInfo) SetAllocatableResource 

func (n *NodeInfo) SetAllocatableResource(allocatableResource *Resource)

SetAllocatableResource sets the allocatableResource information of given node.

func (*NodeInfo) SetGeneration 

func (n *NodeInfo) SetGeneration(newGeneration int64)

SetGeneration sets the generation on this node. This is for testing only.

func (*NodeInfo) SetImageStates 

func (n *NodeInfo) SetImageStates(newImageStates map[string]*ImageStateSummary)

SetImageStates sets the state information of all images.

func (*NodeInfo) SetNode 

func (n *NodeInfo) SetNode(node *v1.Node) error

SetNode sets the overall node information.

func (*NodeInfo) SetNonZeroRequest 

func (n *NodeInfo) SetNonZeroRequest(newResource *Resource)

SetNonZeroRequest sets the aggregated nonzero resource request of pods on this node.

func (*NodeInfo) SetPods 

func (n *NodeInfo) SetPods(pods []*v1.Pod)

SetPods sets all pods scheduled (including assumed to be) on this node.

func (*NodeInfo) SetRequestedResource 

func (n *NodeInfo) SetRequestedResource(newResource *Resource)

SetRequestedResource sets the aggregated resource request of pods on this node.

func (*NodeInfo) SetTaints 

func (n *NodeInfo) SetTaints(newTaints []v1.Taint)

SetTaints sets the taints list on this node.

func (*NodeInfo) SetUsedPorts 

func (n *NodeInfo) SetUsedPorts(newUsedPorts HostPortInfo)

SetUsedPorts sets the used ports on this node.

func (*NodeInfo) String 

func (n *NodeInfo) String() string

String returns representation of human readable format of this NodeInfo.

func (*NodeInfo) Taints 

func (n *NodeInfo) Taints() ([]v1.Taint, error)

Taints returns the taints list on this node.

func (*NodeInfo) UpdateUsedPorts 

func (n *NodeInfo) UpdateUsedPorts(pod *v1.Pod, add bool)

UpdateUsedPorts updates the UsedPorts of NodeInfo.

func (*NodeInfo) UsedPorts 

func (n *NodeInfo) UsedPorts() HostPortInfo

UsedPorts returns used ports on this node.

func (*NodeInfo) VolumeLimits 

func (n *NodeInfo) VolumeLimits() map[v1.ResourceName]int64

VolumeLimits returns volume limits associated with the node

type ProtocolPort 

type ProtocolPort struct {
	Protocol string
	Port     int32
}

ProtocolPort represents a protocol port pair, e.g. tcp:80.

func NewProtocolPort 

func NewProtocolPort(protocol string, port int32) *ProtocolPort

NewProtocolPort creates a ProtocolPort instance.

type Resource 

type Resource struct {
	MilliCPU         int64
	Memory           int64
	EphemeralStorage int64
	// We store allowedPodNumber (which is Node.Status.Allocatable.Pods().Value())
	// explicitly as int, to avoid conversions and improve performance.
	AllowedPodNumber int
	// ScalarResources
	ScalarResources map[v1.ResourceName]int64
}

Resource is a collection of compute resource.

func NewResource 

func NewResource(rl v1.ResourceList) *Resource

NewResource creates a Resource from ResourceList

func (*Resource) Add 

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

Add adds ResourceList into Resource.

func (*Resource) AddScalar 

func (r *Resource) AddScalar(name v1.ResourceName, quantity int64)

AddScalar adds a resource by a scalar value of this resource.

func (*Resource) Clone 

func (r *Resource) Clone() *Resource

Clone returns a copy of this resource.

func (*Resource) ResourceList 

func (r *Resource) ResourceList() v1.ResourceList

ResourceList returns a resource list of this resource.

func (*Resource) SetMaxResource 

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

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

func (*Resource) SetScalar 

func (r *Resource) SetScalar(name v1.ResourceName, quantity int64)

SetScalar sets a resource by a scalar value of this resource.

type Snapshot 

type Snapshot struct {
	// NodeInfoMap a map of node name to a snapshot of its NodeInfo.
	NodeInfoMap map[string]*NodeInfo
	// NodeInfoList is the list of nodes as ordered in the cache's nodeTree.
	NodeInfoList []*NodeInfo
	Generation   int64
}

Snapshot is a snapshot of cache NodeInfo and NodeTree order. The scheduler takes a snapshot at the beginning of each scheduling cycle and uses it for its operations in that cycle.

func NewSnapshot 

func NewSnapshot() *Snapshot

NewSnapshot initializes a Snapshot struct and returns it.

func (*Snapshot) ListNodes 

func (s *Snapshot) ListNodes() []*v1.Node

ListNodes returns the list of nodes in the snapshot.

type TransientSchedulerInfo 

type TransientSchedulerInfo struct {
	TransientLock sync.Mutex
	// NodeTransInfo holds the information related to nodeTransientInformation. NodeName is the key here.
	TransNodeInfo nodeTransientInfo
}

TransientSchedulerInfo is a transient structure which is destructed at the end of each scheduling cycle. It consists of items that are valid for a scheduling cycle and is used for message passing across predicates and priorities. Some examples which could be used as fields are number of volumes being used on node, current utilization on node etc. IMPORTANT NOTE: Make sure that each field in this structure is documented along with usage. Expand this structure only when absolutely needed as this data structure will be created and destroyed during every scheduling cycle.

func NewTransientSchedulerInfo 

func NewTransientSchedulerInfo() *TransientSchedulerInfo

NewTransientSchedulerInfo returns a new scheduler transient structure with initialized values.

func (*TransientSchedulerInfo) ResetTransientSchedulerInfo 

func (transientSchedInfo *TransientSchedulerInfo) ResetTransientSchedulerInfo()

ResetTransientSchedulerInfo resets the TransientSchedulerInfo.

Source Files

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