cloudprovider

Documentation

Index

• Variables
• type CloudProvider
• type NodeGroup
• type NodeGroupDiscoveryOptions
  • func (o NodeGroupDiscoveryOptions) AutoDiscoverySpecified() bool
  • func (o NodeGroupDiscoveryOptions) StaticDiscoverySpecified() bool
  • func (o NodeGroupDiscoveryOptions) Validate() error
• type PricingModel

Variables

var ErrNotImplemented errors.AutoscalerError = errors.NewAutoscalerError(errors.InternalError, "Not implemented")

ErrNotImplemented is returned if a method is not implemented.

Types

type CloudProvider

type CloudProvider interface {
	// Name returns name of the cloud provider.
	Name() string

	// NodeGroups returns all node groups configured for this cloud provider.
	NodeGroups() []NodeGroup

	// NodeGroupForNode returns the node group for the given node, nil if the node
	// should not be processed by cluster autoscaler, or non-nil error if such
	// occurred.
	NodeGroupForNode(*apiv1.Node) (NodeGroup, error)

	// Pricing returns pricing model for this cloud provider or error if not available.
	Pricing() (PricingModel, errors.AutoscalerError)
}

CloudProvider contains configuration info and functions for interacting with cloud provider (GCE, AWS, etc).

type NodeGroup

type NodeGroup interface {
	// MaxSize returns maximum size of the node group.
	MaxSize() int

	// MinSize returns minimum size of the node group.
	MinSize() int

	// TargetSize returns the current target size of the node group. It is possible that the
	// number of nodes in Kubernetes is different at the moment but should be equal
	// to Size() once everything stabilizes (new nodes finish startup and registration or
	// removed nodes are deleted completely)
	TargetSize() (int, error)

	// IncreaseSize increases the size of the node group. To delete a node you need
	// to explicitly name it and use DeleteNode. This function should wait until
	// node group size is updated.
	IncreaseSize(delta int) error

	// DeleteNodes deletes nodes from this node group. Error is returned either on
	// failure or if the given node doesn't belong to this node group. This function
	// should wait until node group size is updated.
	DeleteNodes([]*apiv1.Node) error

	// DecreaseTargetSize decreases the target size of the node group. This function
	// doesn't permit to delete any existing node and can be used only to reduce the
	// request for new nodes that have not been yet fulfilled. Delta should be negative.
	// It is assumed that cloud provider will not delete the existing nodes if the size
	// when there is an option to just decrease the target.
	DecreaseTargetSize(delta int) error

	// Id returns an unique identifier of the node group.
	Id() string

	// Debug returns a string containing all information regarding this node group.
	Debug() string

	// Nodes returns a list of all nodes that belong to this node group.
	Nodes() ([]string, error)

	// TemplateNodeInfo returns a schedulercache.NodeInfo structure of an empty
	// (as if just started) node. This will be used in scale-up simulations to
	// predict what would a new node look like if a node group was expanded. The returned
	// NodeInfo is expected to have a fully populated Node object, with all of the labels,
	// capacity and allocatable information as well as all pods that are started on
	// the node by default, using manifest (most likely only kube-proxy).
	TemplateNodeInfo() (*schedulercache.NodeInfo, error)
}

NodeGroup contains configuration info and functions to control a set of nodes that have the same capacity and set of labels.

type NodeGroupDiscoveryOptions

type NodeGroupDiscoveryOptions struct {
	// NodeGroupSpecs is specified to statically discover node groups listed in it
	NodeGroupSpecs []string
	// NodeGroupAutoDiscoverySpec is specified for automatically discovering node groups according to the specs
	NodeGroupAutoDiscoverySpec string
}

NodeGroupDiscoveryOptions contains various options to configure how a cloud provider discovers node groups

func (NodeGroupDiscoveryOptions) AutoDiscoverySpecified

func (o NodeGroupDiscoveryOptions) AutoDiscoverySpecified() bool

AutoDiscoverySpecified returns true only when there is --node-group-auto-discovery specified

func (NodeGroupDiscoveryOptions) StaticDiscoverySpecified

func (o NodeGroupDiscoveryOptions) StaticDiscoverySpecified() bool

StaticDiscoverySpecified returns true only when there are 1 or more --nodes flags are specified

func (NodeGroupDiscoveryOptions) Validate

func (o NodeGroupDiscoveryOptions) Validate() error

Validate returns and error when both --nodes and --node-group-auto-discovery are specified

type PricingModel

type PricingModel interface {
	// NodePrice returns a price of running the given node for a given period of time.
	// All prices returned by the structure should be in the same currency.
	NodePrice(node *apiv1.Node, startTime time.Time, endTime time.Time) (float64, error)

	// PodePrice returns a theoretical minimum priece of running a pod for a given
	// period of time on a perfectly matching machine.
	PodPrice(pod *apiv1.Pod, startTime time.Time, endTime time.Time) (float64, error)
}

PricingModel contains information about the node price and how it changes in time.