ipam

Documentation

Overview

Package ipam implements Azure IPAM logic

Index

• type AzureAPI
• type InstancesManager
  • func NewInstancesManager(api AzureAPI) *InstancesManager
  • func (m *InstancesManager) CreateNode(obj *v2.CiliumNode, n *ipam.Node) ipam.NodeOperations
  • func (m *InstancesManager) DeleteInstance(instanceID string)
  • func (m *InstancesManager) GetPoolQuota() (quota ipamTypes.PoolQuotaMap)
  • func (m *InstancesManager) HasInstance(instanceID string) bool
  • func (m *InstancesManager) Resync(ctx context.Context) time.Time
• type Node
  • func (n *Node) AllocateIPs(ctx context.Context, a *ipam.AllocationAction) error
  • func (n *Node) CreateInterface(ctx context.Context, allocation *ipam.AllocationAction, ...) (int, string, error)
  • func (n *Node) GetMaximumAllocatableIPv4() int
  • func (n *Node) GetMinimumAllocatableIPv4() int
  • func (n *Node) GetUsedIPWithPrefixes() int
  • func (n *Node) IsPrefixDelegated() bool
  • func (n *Node) PopulateStatusFields(k8sObj *v2.CiliumNode)
  • func (n *Node) PrepareIPAllocation(scopedLog *logrus.Entry) (a *ipam.AllocationAction, err error)
  • func (n *Node) PrepareIPRelease(excessIPs int, scopedLog *logrus.Entry) *ipam.ReleaseAction
  • func (n *Node) ReleaseIPs(ctx context.Context, r *ipam.ReleaseAction) error
  • func (n *Node) ResyncInterfacesAndIPs(ctx context.Context, scopedLog *logrus.Entry) (available ipamTypes.AllocationMap, remainingAvailableInterfaceCount int, ...)
  • func (n *Node) UpdatedNode(obj *v2.CiliumNode)

Types

type AzureAPI

type AzureAPI interface {
	GetInstances(ctx context.Context, subnets ipamTypes.SubnetMap) (*ipamTypes.InstanceMap, error)
	GetVpcsAndSubnets(ctx context.Context) (ipamTypes.VirtualNetworkMap, ipamTypes.SubnetMap, error)
	AssignPrivateIpAddressesVM(ctx context.Context, subnetID, interfaceName string, addresses int) error
	AssignPrivateIpAddressesVMSS(ctx context.Context, instanceID, vmssName, subnetID, interfaceName string, addresses int) error
}

AzureAPI is the API surface used of the Azure API

type InstancesManager

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

InstancesManager maintains the list of instances. It must be kept up to date by calling resync() regularly.

func NewInstancesManager

func NewInstancesManager(api AzureAPI) *InstancesManager

NewInstancesManager returns a new instances manager

func (*InstancesManager) CreateNode

func (m *InstancesManager) CreateNode(obj *v2.CiliumNode, n *ipam.Node) ipam.NodeOperations

CreateNode is called on discovery of a new node

func (*InstancesManager) DeleteInstance

func (m *InstancesManager) DeleteInstance(instanceID string)

DeleteInstance delete instance from m.instances

func (*InstancesManager) GetPoolQuota

func (m *InstancesManager) GetPoolQuota() (quota ipamTypes.PoolQuotaMap)

GetPoolQuota returns the number of available IPs in all IP pools

func (*InstancesManager) HasInstance

func (m *InstancesManager) HasInstance(instanceID string) bool

HasInstance returns whether the instance is in instances

func (*InstancesManager) Resync

func (m *InstancesManager) Resync(ctx context.Context) time.Time

Resync fetches the list of EC2 instances and subnets and updates the local cache in the instanceManager. It returns the time when the resync has started or time.Time{} if it did not complete.

type Node

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

Node represents a node representing an Azure instance

func (*Node) AllocateIPs

func (n *Node) AllocateIPs(ctx context.Context, a *ipam.AllocationAction) error

AllocateIPs performs the Azure IP allocation operation

func (*Node) CreateInterface

func (n *Node) CreateInterface(ctx context.Context, allocation *ipam.AllocationAction, scopedLog *logrus.Entry) (int, string, error)

CreateInterface is called to create a new interface. This operation is currently not supported on Azure.

func (*Node) GetMaximumAllocatableIPv4

func (n *Node) GetMaximumAllocatableIPv4() int

GetMaximumAllocatableIPv4 returns the maximum amount of IPv4 addresses that can be allocated to the instance

func (*Node) GetMinimumAllocatableIPv4

func (n *Node) GetMinimumAllocatableIPv4() int

GetMinimumAllocatableIPv4 returns the minimum amount of IPv4 addresses that must be allocated to the instance.

func (*Node) GetUsedIPWithPrefixes

func (n *Node) GetUsedIPWithPrefixes() int

func (*Node) IsPrefixDelegated

func (n *Node) IsPrefixDelegated() bool

func (*Node) PopulateStatusFields

func (n *Node) PopulateStatusFields(k8sObj *v2.CiliumNode)

PopulateStatusFields fills in the status field of the CiliumNode custom resource with Azure specific information

func (*Node) PrepareIPAllocation

func (n *Node) PrepareIPAllocation(scopedLog *logrus.Entry) (a *ipam.AllocationAction, err error)

PrepareIPAllocation returns the number of IPs that can be allocated/created.

func (*Node) PrepareIPRelease

func (n *Node) PrepareIPRelease(excessIPs int, scopedLog *logrus.Entry) *ipam.ReleaseAction

PrepareIPRelease prepares the release of IPs

func (*Node) ReleaseIPs

func (n *Node) ReleaseIPs(ctx context.Context, r *ipam.ReleaseAction) error

ReleaseIPs performs the IP release operation

func (*Node) ResyncInterfacesAndIPs

func (n *Node) ResyncInterfacesAndIPs(ctx context.Context, scopedLog *logrus.Entry) (available ipamTypes.AllocationMap, remainingAvailableInterfaceCount int, err error)

ResyncInterfacesAndIPs is called to retrieve and interfaces and IPs as known to the Azure API and return them

func (*Node) UpdatedNode

func (n *Node) UpdatedNode(obj *v2.CiliumNode)

UpdatedNode is called when an update to the CiliumNode is received.