hostport

Documentation

Index

• func NewFakeIPTables() *fakeIPTables
• type HostPortManager
  • func NewHostportManager() HostPortManager
• type HostportSyncer
  • func NewHostportSyncer() HostportSyncer
• type PodPortMapping
  • func ConstructPodPortMapping(pod *v1.Pod, podIP net.IP) *PodPortMapping
• type PortMapping

Functions

func NewFakeIPTables

func NewFakeIPTables() *fakeIPTables

Types

type HostPortManager

type HostPortManager interface {
	// Add implements port mappings.
	// id should be a unique identifier for a pod, e.g. podSandboxID.
	// podPortMapping is the associated port mapping information for the pod.
	// natInterfaceName is the interface that localhost used to talk to the given pod.
	Add(id string, podPortMapping *PodPortMapping, natInterfaceName string) error
	// Remove cleans up matching port mappings
	// Remove must be able to clean up port mappings without pod IP
	Remove(id string, podPortMapping *PodPortMapping) error
}

HostPortManager is an interface for adding and removing hostport for a given pod sandbox.

func NewHostportManager

func NewHostportManager() HostPortManager

type HostportSyncer

type HostportSyncer interface {
	// SyncHostports gathers all hostports on node and setup iptables rules to enable them.
	// On each invocation existing ports are synced and stale rules are deleted.
	SyncHostports(natInterfaceName string, activePodPortMappings []*PodPortMapping) error
	// OpenPodHostportsAndSync opens hostports for a new PodPortMapping, gathers all hostports on
	// node, sets up iptables rules enable them. On each invocation existing ports are synced and stale rules are deleted.
	// 'newPortMapping' must also be present in 'activePodPortMappings'.
	OpenPodHostportsAndSync(newPortMapping *PodPortMapping, natInterfaceName string, activePodPortMappings []*PodPortMapping) error
}

HostportSyncer takes a list of PodPortMappings and implements hostport all at once

func NewHostportSyncer

func NewHostportSyncer() HostportSyncer

type PodPortMapping

type PodPortMapping struct {
	Namespace    string
	Name         string
	PortMappings []*PortMapping
	HostNetwork  bool
	IP           net.IP
}

PodPortMapping represents a pod's network state and associated container port mappings

func ConstructPodPortMapping

func ConstructPodPortMapping(pod *v1.Pod, podIP net.IP) *PodPortMapping

ConstructPodPortMapping creates a PodPortMapping from the ports specified in the pod's containers.

type PortMapping

type PortMapping struct {
	Name          string
	HostPort      int32
	ContainerPort int32
	Protocol      v1.Protocol
	HostIP        string
}

PortMapping represents a network port in a container