nodedb

package
v0.3.75-rc-bfcba91 Latest Latest
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 Go to latest Published: Jun 19, 2023 License: Apache-2.0 Imports: 21 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func BindPodToNode 

func BindPodToNode(req *schedulerobjects.PodRequirements, node *schedulerobjects.Node) (*schedulerobjects.Node, error)

BindPodToNode returns a copy of node with req bound to it.

func EncodeInt64 added in v0.3.71 

func EncodeInt64(out []byte, val int64) []byte

EncodeInt64 returns the canonical byte representation of a int64 used within the nodeDb. The resulting []byte is such that for two int64 a and b, a.Cmp(b) = bytes.Compare(enc(a), enc(b)). The byte representation is appended to out, which is returned.

func EncodeQuantity added in v0.3.71 

func EncodeQuantity(out []byte, val resource.Quantity) []byte

EncodeQuantity returns the canonical byte representation of a resource.Quantity used within the nodeDb. The resulting []byte is such that for two resource.Quantity a and b, a.Cmp(b) = bytes.Compare(enc(a), enc(b)). The byte representation is appended to out, which is returned.

func EncodeUint64 added in v0.3.71 

func EncodeUint64(out []byte, val uint64) []byte

EncodeUint64 returns the canonical byte representation of a uint64 used within the nodeDb. The resulting []byte is such that for two uint64 a and b, a.Cmp(b) = bytes.Compare(enc(a), enc(b)). The byte representation is appended to out, which is returned.

func EvictPodFromNode 

func EvictPodFromNode(req *schedulerobjects.PodRequirements, node *schedulerobjects.Node) (*schedulerobjects.Node, error)

EvictPodFromNode returns a copy of node with req evicted from it. Specifically: - The job is marked as evicted on the node. - AllocatedByJobId and AllocatedByQueue are not updated. - Resources requested by the evicted pod are marked as allocated at priority evictedPriority.

func JobIdFromPodRequirements 

func JobIdFromPodRequirements(req *schedulerobjects.PodRequirements) (string, error)

func NodeIndexKey added in v0.3.71 

func NodeIndexKey(out []byte, nodeTypeId uint64, resources []resource.Quantity) []byte

NodeIndexKey returns a []byte to be used as a key with the NodeIndex memdb index with layout

0 8 16 32 | nodeTypeId | resources[0] | resources[1] | ... |

where the numbers indicate number of bytes.

The key layout is such that an index ordered first by the nodeTypeId, then resources[0], and so on. The byte representation is appended to out, which is returned.

func NodeJobDiff 

func NodeJobDiff(txnA, txnB *memdb.Txn) (map[string]*schedulerobjects.Node, map[string]*schedulerobjects.Node, error)

NodeJobDiff compares two snapshots of the NodeDb memdb and returns - a map from job ids of all preempted jobs to the node they used to be on - a map from job ids of all scheduled jobs to the node they were scheduled on that happened between the two snapshots.

func QueueFromPodRequirements 

func QueueFromPodRequirements(req *schedulerobjects.PodRequirements) (string, error)

func RoundedNodeIndexKeyFromResourceList added in v0.3.71 

func RoundedNodeIndexKeyFromResourceList(out []byte, nodeTypeId uint64, resourceNames []string, resourceResolutionMillis []int64, rl schedulerobjects.ResourceList) []byte

RoundedNodeIndexKeyFromResourceList works like NodeIndexKey, except that prior to constructing a the key the i-th resource is rounded down to the closest multiple of resourceResolutionMillis[i]. It also takes as arguments a list of resource names and a resourceList, instead of a list of resources.

func UnbindPodFromNode 

func UnbindPodFromNode(req *schedulerobjects.PodRequirements, node *schedulerobjects.Node) (*schedulerobjects.Node, error)

UnbindPodFromNode returns a copy of node with req unbound from it.

func UnbindPodsFromNode 

func UnbindPodsFromNode(reqs []*schedulerobjects.PodRequirements, node *schedulerobjects.Node) (*schedulerobjects.Node, error)

UnbindPodsFromNode returns a node with all reqs unbound from it.

func UnschedulableTaint added in v0.3.65 

func UnschedulableTaint() v1.Taint

UnschedulableTaint returns the taint automatically added to unschedulable nodes on inserting into the nodeDb.

func UnschedulableToleration added in v0.3.65 

func UnschedulableToleration() v1.Toleration

UnschedulableToleration returns a toleration that tolerates UnschedulableTaint().

Types

type NodeDb 

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

NodeDb is the scheduler-internal system used to efficiently find nodes on which a pod could be scheduled.

func NewNodeDb 

func NewNodeDb(
	priorityClasses map[string]configuration.PriorityClass,
	maxExtraNodesToConsider uint,
	indexedResources []configuration.IndexedResource,
	indexedTaints,
	indexedNodeLabels []string,
) (*NodeDb, error)

func (*NodeDb) ClearAllocated 

func (nodeDb *NodeDb) ClearAllocated() error

ClearAllocated zeroes out allocated resources on all nodes in the NodeDb.

func (*NodeDb) GetNode 

func (nodeDb *NodeDb) GetNode(id string) (*schedulerobjects.Node, error)

GetNode returns a node in the db with given id.

func (*NodeDb) GetNodeWithTxn 

func (nodeDb *NodeDb) GetNodeWithTxn(txn *memdb.Txn, id string) (*schedulerobjects.Node, error)

GetNodeWithTxn returns a node in the db with given id, within the provided transactions.

func (*NodeDb) NodeTypesMatchingPod 

func (nodeDb *NodeDb) NodeTypesMatchingPod(req *schedulerobjects.PodRequirements) ([]*schedulerobjects.NodeType, map[string]int, error)

NodeTypesMatchingPod returns a slice with all node types a pod could be scheduled on. It also returns the number of nodes excluded by reason for exclusion.

func (*NodeDb) NumNodes 

func (nodeDb *NodeDb) NumNodes() int

func (*NodeDb) ScheduleMany 

func (nodeDb *NodeDb) ScheduleMany(reqs []*schedulerobjects.PodRequirements) ([]*schedulercontext.PodSchedulingContext, bool, error)

ScheduleMany assigns a set of pods to nodes. The assignment is atomic, i.e., either all pods are successfully assigned to nodes or none are. The returned bool indicates whether assignment succeeded or not. TODO: Pass through contexts to support timeouts.

func (*NodeDb) ScheduleManyWithTxn 

func (nodeDb *NodeDb) ScheduleManyWithTxn(txn *memdb.Txn, reqs []*schedulerobjects.PodRequirements) ([]*schedulercontext.PodSchedulingContext, bool, error)

func (*NodeDb) SelectAndBindNodeToPod 

func (nodeDb *NodeDb) SelectAndBindNodeToPod(req *schedulerobjects.PodRequirements) (*schedulercontext.PodSchedulingContext, error)

func (*NodeDb) SelectAndBindNodeToPodWithTxn 

func (nodeDb *NodeDb) SelectAndBindNodeToPodWithTxn(txn *memdb.Txn, req *schedulerobjects.PodRequirements) (*schedulercontext.PodSchedulingContext, error)

func (*NodeDb) SelectNodeForPod 

func (nodeDb *NodeDb) SelectNodeForPod(req *schedulerobjects.PodRequirements) (*schedulercontext.PodSchedulingContext, error)

func (*NodeDb) SelectNodeForPodWithTxn 

func (nodeDb *NodeDb) SelectNodeForPodWithTxn(txn *memdb.Txn, req *schedulerobjects.PodRequirements) (*schedulercontext.PodSchedulingContext, error)

SelectNodeForPodWithTxn selects a node on which the pod can be scheduled.

func (*NodeDb) String 

func (nodeDb *NodeDb) String() string

func (*NodeDb) TotalResources 

func (nodeDb *NodeDb) TotalResources() schedulerobjects.ResourceList

func (*NodeDb) Txn 

func (nodeDb *NodeDb) Txn(write bool) *memdb.Txn

func (*NodeDb) Upsert 

func (nodeDb *NodeDb) Upsert(node *schedulerobjects.Node) error

func (*NodeDb) UpsertMany 

func (nodeDb *NodeDb) UpsertMany(nodes []*schedulerobjects.Node) error

func (*NodeDb) UpsertManyWithTxn 

func (nodeDb *NodeDb) UpsertManyWithTxn(txn *memdb.Txn, nodes []*schedulerobjects.Node) error

func (*NodeDb) UpsertWithTxn 

func (nodeDb *NodeDb) UpsertWithTxn(txn *memdb.Txn, node *schedulerobjects.Node) error

type NodeIndex added in v0.3.71 

type NodeIndex struct {
	KeyIndex int
}

NodeIndex is an index for schedulerobjects.Node that returns node.NodeDbKeys[KeyIndex].

func (*NodeIndex) FromArgs added in v0.3.71 

func (index *NodeIndex) FromArgs(args ...interface{}) ([]byte, error)

FromArgs computes the index key from a set of arguments. Takes a single argument resourceAmount of type []byte.

func (*NodeIndex) FromObject added in v0.3.71 

func (index *NodeIndex) FromObject(raw interface{}) (bool, []byte, error)

FromObject extracts the index key from a *schedulerobjects.Node.

type NodeIterator 

type NodeIterator interface {
	NextNode() *schedulerobjects.Node
}

type NodePairIterator 

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

func NewNodePairIterator 

func NewNodePairIterator(txnA, txnB *memdb.Txn) (*NodePairIterator, error)

func (*NodePairIterator) Next 

func (it *NodePairIterator) Next() interface{}

func (*NodePairIterator) NextItem 

func (it *NodePairIterator) NextItem() (rv *NodePairIteratorItem)

func (*NodePairIterator) WatchCh 

func (it *NodePairIterator) WatchCh() <-chan struct{}

type NodePairIteratorItem 

type NodePairIteratorItem struct {
	NodeA *schedulerobjects.Node
	NodeB *schedulerobjects.Node
}

type NodeTypeIterator 

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

NodeTypeIterator is an iterator over all nodes of a given nodeType with at least some specified amount of resources allocatable at a given priority. For example, all nodes of nodeType "foo" with at least 2 cores and 1Gi memory allocatable at priority 2. Nodes are returned in sorted order, from least to most of the specified resource available.

func NewNodeTypeIterator 

func NewNodeTypeIterator(
	txn *memdb.Txn,
	nodeTypeId uint64,
	indexName string,
	priority int32,
	indexedResources []string,
	indexedResourceRequests []resource.Quantity,
	indexedResourceResolutionMillis []int64,
) (*NodeTypeIterator, error)

func (*NodeTypeIterator) Next 

func (it *NodeTypeIterator) Next() interface{}

func (*NodeTypeIterator) NextNode 

func (it *NodeTypeIterator) NextNode() (*schedulerobjects.Node, error)

func (*NodeTypeIterator) WatchCh 

func (it *NodeTypeIterator) WatchCh() <-chan struct{}

type NodeTypesIterator 

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

NodeTypesIterator is an iterator over all nodes of the given nodeTypes with at least some specified amount of resources allocatable at a given priority. For example, all nodes of nodeType "foo" and "bar" with at least 2 cores and 1Gi memory allocatable at priority 2. Nodes are returned in sorted order, from least to most of the specified resource available.

func NewNodeTypesIterator 

func NewNodeTypesIterator(
	txn *memdb.Txn,
	nodeTypeIds []uint64,
	indexName string,
	priority int32,
	indexedResources []string,
	indexedResourceRequests []resource.Quantity,
	indexedResourceResolutionMillis []int64,
) (*NodeTypesIterator, error)

func (*NodeTypesIterator) Next 

func (it *NodeTypesIterator) Next() interface{}

func (*NodeTypesIterator) NextNode 

func (it *NodeTypesIterator) NextNode() (*schedulerobjects.Node, error)

func (*NodeTypesIterator) WatchCh 

func (it *NodeTypesIterator) WatchCh() <-chan struct{}

type NodesIterator 

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

NodesIterator is an iterator over all nodes in the db.

func NewNodesIterator 

func NewNodesIterator(txn *memdb.Txn) (*NodesIterator, error)

func (*NodesIterator) Next 

func (it *NodesIterator) Next() interface{}

func (*NodesIterator) NextNode 

func (it *NodesIterator) NextNode() *schedulerobjects.Node

func (*NodesIterator) WatchCh 

func (it *NodesIterator) WatchCh() <-chan struct{}

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