cloudprovider

package
v1.0.1 Latest Latest
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 Go to latest Published: Sep 5, 2024 License: Apache-2.0 Imports: 13 Imported by: 31

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Index

Constants

This section is empty.

Variables

View Source 
var (
	SpotRequirement     = scheduling.NewRequirements(scheduling.NewRequirement(v1.CapacityTypeLabelKey, corev1.NodeSelectorOpIn, v1.CapacityTypeSpot))
	OnDemandRequirement = scheduling.NewRequirements(scheduling.NewRequirement(v1.CapacityTypeLabelKey, corev1.NodeSelectorOpIn, v1.CapacityTypeOnDemand))
)

Functions

func IgnoreNodeClaimNotFoundError 

func IgnoreNodeClaimNotFoundError(err error) error

func IsInsufficientCapacityError 

func IsInsufficientCapacityError(err error) bool

func IsNodeClaimNotFoundError 

func IsNodeClaimNotFoundError(err error) bool

func IsNodeClassNotReadyError 

func IsNodeClassNotReadyError(err error) bool

Types

type CloudProvider 

type CloudProvider interface {
	// Create launches a NodeClaim with the given resource requests and requirements and returns a hydrated
	// NodeClaim back with resolved NodeClaim labels for the launched NodeClaim
	Create(context.Context, *v1.NodeClaim) (*v1.NodeClaim, error)
	// Delete removes a NodeClaim from the cloudprovider by its provider id
	Delete(context.Context, *v1.NodeClaim) error
	// Get retrieves a NodeClaim from the cloudprovider by its provider id
	Get(context.Context, string) (*v1.NodeClaim, error)
	// List retrieves all NodeClaims from the cloudprovider
	List(context.Context) ([]*v1.NodeClaim, error)
	// GetInstanceTypes returns instance types supported by the cloudprovider.
	// Availability of types or zone may vary by nodepool or over time.  Regardless of
	// availability, the GetInstanceTypes method should always return all instance types,
	// even those with no offerings available.
	GetInstanceTypes(context.Context, *v1.NodePool) ([]*InstanceType, error)
	// IsDrifted returns whether a NodeClaim has drifted from the provisioning requirements
	// it is tied to.
	IsDrifted(context.Context, *v1.NodeClaim) (DriftReason, error)
	// Name returns the CloudProvider implementation name.
	Name() string
	// GetSupportedNodeClasses returns CloudProvider NodeClass that implements status.Object
	// NOTE: It returns a list where the first element should be the default NodeClass
	GetSupportedNodeClasses() []status.Object
}

CloudProvider interface is implemented by cloud providers to support provisioning.

type DriftReason 

type DriftReason string

type InstanceType 

type InstanceType struct {
	// Name of the instance type, must correspond to corev1.LabelInstanceTypeStable
	Name string
	// Requirements returns a flexible set of properties that may be selected
	// for scheduling. Must be defined for every well known label, even if empty.
	Requirements scheduling.Requirements
	// Note that though this is an array it is expected that all the Offerings are unique from one another
	Offerings Offerings
	// Resources are the full resource capacities for this instance type
	Capacity corev1.ResourceList
	// Overhead is the amount of resource overhead expected to be used by kubelet and any other system daemons outside
	// of Kubernetes.
	Overhead *InstanceTypeOverhead
	// contains filtered or unexported fields
}

InstanceType describes the properties of a potential node (either concrete attributes of an instance of this type or supported options in the case of arrays)

func (*InstanceType) Allocatable 

func (i *InstanceType) Allocatable() corev1.ResourceList

type InstanceTypeOverhead 

type InstanceTypeOverhead struct {
	// KubeReserved returns the default resources allocated to kubernetes system daemons by default
	KubeReserved corev1.ResourceList
	// SystemReserved returns the default resources allocated to the OS system daemons by default
	SystemReserved corev1.ResourceList
	// EvictionThreshold returns the resources used to maintain a hard eviction threshold
	EvictionThreshold corev1.ResourceList
}

func (InstanceTypeOverhead) Total 

func (i InstanceTypeOverhead) Total() corev1.ResourceList

type InstanceTypes 

type InstanceTypes []*InstanceType

func (InstanceTypes) Compatible added in v0.34.0 

func (its InstanceTypes) Compatible(requirements scheduling.Requirements) InstanceTypes

Compatible returns the list of instanceTypes based on the supported capacityType and zones in the requirements

func (InstanceTypes) OrderByPrice 

func (its InstanceTypes) OrderByPrice(reqs scheduling.Requirements) InstanceTypes

func (InstanceTypes) SatisfiesMinValues added in v0.37.0 

func (its InstanceTypes) SatisfiesMinValues(requirements scheduling.Requirements) (minNeededInstanceTypes int, err error)

SatisfiesMinValues validates whether the InstanceTypes satisfies the minValues requirements It returns the minimum number of needed instance types to satisfy the minValues requirement and an error that indicates whether the InstanceTypes satisfy the passed-in requirements This minNeededInstanceTypes value is dependent on the ordering of instance types, so relying on this value in a deterministic way implies that the instance types are sorted ahead of using this method For example: Requirements:

  • key: node.kubernetes.io/instance-type operator: In values: ["c4.large","c4.xlarge","c5.large","c5.xlarge","m4.large","m4.xlarge"] minValues: 3
  • key: karpenter.kwok.sh/instance-family operator: In values: ["c4","c5","m4"] minValues: 3

InstanceTypes: ["c4.large","c5.xlarge","m4.2xlarge"], it PASSES the requirements 

	we get the map as : {
		node.kubernetes.io/instance-type:  ["c4.large","c5.xlarge","m4.2xlarge"],
		karpenter.k8s.aws/instance-family: ["c4","c5","m4"]
	}
 so it returns 3 and a nil error to indicate a minimum of 3 instance types were required to fulfill the minValues requirements

And if InstanceTypes: ["c4.large","c4.xlarge","c5.2xlarge"], it FAILS the requirements 

	we get the map as : {
		node.kubernetes.io/instance-type:  ["c4.large","c4.xlarge","c5.2xlarge"],
		karpenter.k8s.aws/instance-family: ["c4","c5"] // minimum requirement failed for this.
	}
  so it returns 3 and a non-nil error to indicate that the instance types weren't able to fulfill the minValues requirements

func (InstanceTypes) Truncate added in v0.37.0 

func (its InstanceTypes) Truncate(requirements scheduling.Requirements, maxItems int) (InstanceTypes, error)

Truncate truncates the InstanceTypes based on the passed-in requirements It returns an error if it isn't possible to truncate the instance types on maxItems without violating minValues

type InsufficientCapacityError 

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

InsufficientCapacityError is an error type returned by CloudProviders when a launch fails due to a lack of capacity from NodeClaim requirements

func NewInsufficientCapacityError 

func NewInsufficientCapacityError(err error) *InsufficientCapacityError

func (*InsufficientCapacityError) Error 

func (e *InsufficientCapacityError) Error() string

type NodeClaimNotFoundError 

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

NodeClaimNotFoundError is an error type returned by CloudProviders when the reason for failure is NotFound

func NewNodeClaimNotFoundError 

func NewNodeClaimNotFoundError(err error) *NodeClaimNotFoundError

func (*NodeClaimNotFoundError) Error 

func (e *NodeClaimNotFoundError) Error() string

type NodeClassNotReadyError 

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

NodeClassNotReadyError is an error type returned by CloudProviders when a NodeClass that is used by the launch process doesn't have all its resolved fields

func NewNodeClassNotReadyError 

func NewNodeClassNotReadyError(err error) *NodeClassNotReadyError

func (*NodeClassNotReadyError) Error 

func (e *NodeClassNotReadyError) Error() string

type Offering 

type Offering struct {
	Requirements scheduling.Requirements
	Price        float64
	// Available is added so that Offerings can return all offerings that have ever existed for an instance type,
	// so we can get historical pricing data for calculating savings in consolidation
	Available bool
}

An Offering describes where an InstanceType is available to be used, with the expectation that its properties may be tightly coupled (e.g. the availability of an instance type in some zone is scoped to a capacity type) and these properties are captured with labels in Requirements. Requirements are required to contain the keys v1.CapacityTypeLabelKey and corev1.LabelTopologyZone

type Offerings 

type Offerings []Offering

func (Offerings) Available 

func (ofs Offerings) Available() Offerings

Available filters the available offerings from the returned offerings

func (Offerings) Cheapest 

func (ofs Offerings) Cheapest() Offering

Cheapest returns the cheapest offering from the returned offerings

func (Offerings) Compatible added in v0.34.0 

func (ofs Offerings) Compatible(reqs scheduling.Requirements) Offerings

Compatible returns the offerings based on the passed requirements

func (Offerings) HasCompatible added in v1.0.0 

func (ofs Offerings) HasCompatible(reqs scheduling.Requirements) bool

HasCompatible returns whether there is a compatible offering based on the passed requirements

func (Offerings) MostExpensive added in v0.37.0 

func (ofs Offerings) MostExpensive() Offering

MostExpensive returns the most expensive offering from the return offerings

func (Offerings) WorstLaunchPrice added in v1.0.0 

func (ofs Offerings) WorstLaunchPrice(reqs scheduling.Requirements) float64

WorstLaunchPrice gets the worst-case launch price from the offerings that are offered on an instance type. If the instance type has a spot offering available, then it uses the spot offering to get the launch price; else, it uses the on-demand launch price

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