kubernetes – k8s.io/kubernetes/pkg/proxy/ipvs Index | Files | Directories

package ipvs

import "k8s.io/kubernetes/pkg/proxy/ipvs"

Index

Constants 

const (

	// KubeFireWallChain is the kubernetes firewall chain.
	KubeFireWallChain utiliptables.Chain = "KUBE-FIREWALL"

	// KubeMarkMasqChain is the mark-for-masquerade chain
	KubeMarkMasqChain utiliptables.Chain = "KUBE-MARK-MASQ"

	// KubeNodePortChain is the kubernetes node port chain
	KubeNodePortChain utiliptables.Chain = "KUBE-NODE-PORT"

	// KubeMarkDropChain is the mark-for-drop chain
	KubeMarkDropChain utiliptables.Chain = "KUBE-MARK-DROP"

	// KubeForwardChain is the kubernetes forward chain
	KubeForwardChain utiliptables.Chain = "KUBE-FORWARD"

	// KubeLoadBalancerChain is the kubernetes chain for loadbalancer type service
	KubeLoadBalancerChain utiliptables.Chain = "KUBE-LOAD-BALANCER"

	// DefaultScheduler is the default ipvs scheduler algorithm - round robin.
	DefaultScheduler = "rr"

	// DefaultDummyDevice is the default dummy interface which ipvs service address will bind to it.
	DefaultDummyDevice = "kube-ipvs0"
)
const EntryInvalidErr = "error adding entry %s to ipset %s"

EntryInvalidErr indicates if an ipset entry is invalid or not 

const (
	// MinIPSetCheckVersion is the min ipset version we need.  IPv6 is supported in ipset 6.x
	MinIPSetCheckVersion = "6.0"
)

Functions

func CanUseIPVSProxier 

func CanUseIPVSProxier(handle KernelHandler, ipsetver IPSetVersioner) (bool, error)

CanUseIPVSProxier returns true if we can use the ipvs Proxier. This is determined by checking if all the required kernel modules can be loaded. It may return an error if it fails to get the kernel modules information without error, in which case it will also return false.

func CleanupLeftovers 

func CleanupLeftovers(ipvs utilipvs.Interface, ipt utiliptables.Interface, ipset utilipset.Interface, cleanupIPVS bool) (encounteredError bool)

CleanupLeftovers clean up all ipvs and iptables rules created by ipvs Proxier.

func GetUniqueRSName 

func GetUniqueRSName(vs *utilipvs.VirtualServer, rs *utilipvs.RealServer) string

GetUniqueRSName return a string type unique rs name with vs information

Types

type GracefulTerminationManager 

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

GracefulTerminationManager manage rs graceful termination information and do graceful termination work rsList is the rs list to graceful termination, ipvs is the ipvsinterface to do ipvs delete/update work

func NewGracefulTerminationManager 

func NewGracefulTerminationManager(ipvs utilipvs.Interface) *GracefulTerminationManager

NewGracefulTerminationManager create a gracefulTerminationManager to manage ipvs rs graceful termination work

func (*GracefulTerminationManager) GracefulDeleteRS 

func (m *GracefulTerminationManager) GracefulDeleteRS(vs *utilipvs.VirtualServer, rs *utilipvs.RealServer) error

GracefulDeleteRS to update rs weight to 0, and add rs to graceful terminate list

func (*GracefulTerminationManager) InTerminationList 

func (m *GracefulTerminationManager) InTerminationList(uniqueRS string) bool

InTerminationList to check whether specified unique rs name is in graceful termination list

func (*GracefulTerminationManager) MoveRSOutofGracefulDeleteList 

func (m *GracefulTerminationManager) MoveRSOutofGracefulDeleteList(uniqueRS string) error

MoveRSOutofGracefulDeleteList to delete an rs and remove it from the rsList immediately

func (*GracefulTerminationManager) Run 

func (m *GracefulTerminationManager) Run()

Run start a goroutine to try to delete rs in the graceful delete rsList with an interval 1 minute

type IPGetter 

type IPGetter interface {
	NodeIPs() ([]net.IP, error)
}

IPGetter helps get node network interface IP

type IPSet 

type IPSet struct {
	utilipset.IPSet
	// contains filtered or unexported fields
}

IPSet wraps util/ipset which is used by IPVS proxier.

func NewIPSet 

func NewIPSet(handle utilipset.Interface, name string, setType utilipset.Type, isIPv6 bool, comment string) *IPSet

NewIPSet initialize a new IPSet struct

type IPSetVersioner 

type IPSetVersioner interface {
	// returns "X.Y"
	GetVersion() (string, error)
}

IPSetVersioner can query the current ipset version.

type KernelHandler 

type KernelHandler interface {
	GetModules() ([]string, error)
}

KernelHandler can handle the current installed kernel modules.

type LinuxKernelHandler 

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

LinuxKernelHandler implements KernelHandler interface.

func NewLinuxKernelHandler 

func NewLinuxKernelHandler() *LinuxKernelHandler

NewLinuxKernelHandler initializes LinuxKernelHandler with exec.

func (*LinuxKernelHandler) GetModules 

func (handle *LinuxKernelHandler) GetModules() ([]string, error)

GetModules returns all installed kernel modules.

type NetLinkHandle 

type NetLinkHandle interface {
	// EnsureAddressBind checks if address is bound to the interface and, if not, binds it.  If the address is already bound, return true.
	EnsureAddressBind(address, devName string) (exist bool, err error)
	// UnbindAddress unbind address from the interface
	UnbindAddress(address, devName string) error
	// EnsureDummyDevice checks if dummy device is exist and, if not, create one.  If the dummy device is already exist, return true.
	EnsureDummyDevice(devName string) (exist bool, err error)
	// DeleteDummyDevice deletes the given dummy device by name.
	DeleteDummyDevice(devName string) error
	// ListBindAddress will list all IP addresses which are bound in a given interface
	ListBindAddress(devName string) ([]string, error)
	// GetLocalAddresses returns all unique local type IP addresses based on specified device and filter device
	// If device is not specified, it will list all unique local type addresses except filter device addresses
	GetLocalAddresses(dev, filterDev string) (sets.String, error)
}

NetLinkHandle for revoke netlink interface

func NewNetLinkHandle 

func NewNetLinkHandle() NetLinkHandle

NewNetLinkHandle will create an EmptyHandle

type Proxier 

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

Proxier is an ipvs based proxy for connections between a localhost:lport and services that provide the actual backends.

func NewProxier 

func NewProxier(ipt utiliptables.Interface,
	ipvs utilipvs.Interface,
	ipset utilipset.Interface,
	sysctl utilsysctl.Interface,
	exec utilexec.Interface,
	syncPeriod time.Duration,
	minSyncPeriod time.Duration,
	excludeCIDRs []string,
	masqueradeAll bool,
	masqueradeBit int,
	clusterCIDR string,
	hostname string,
	nodeIP net.IP,
	recorder record.EventRecorder,
	healthzServer healthcheck.HealthzUpdater,
	scheduler string,
	nodePortAddresses []string,
) (*Proxier, error)

NewProxier returns a new Proxier given an iptables and ipvs Interface instance. Because of the iptables and ipvs logic, it is assumed that there is only a single Proxier active on a machine. An error will be returned if it fails to update or acquire the initial lock. Once a proxier is created, it will keep iptables and ipvs rules up to date in the background and will not terminate if a particular iptables or ipvs call fails.

func (*Proxier) OnEndpointsAdd 

func (proxier *Proxier) OnEndpointsAdd(endpoints *v1.Endpoints)

OnEndpointsAdd is called whenever creation of new endpoints object is observed.

func (*Proxier) OnEndpointsDelete 

func (proxier *Proxier) OnEndpointsDelete(endpoints *v1.Endpoints)

OnEndpointsDelete is called whenever deletion of an existing endpoints object is observed.

func (*Proxier) OnEndpointsSynced 

func (proxier *Proxier) OnEndpointsSynced()

OnEndpointsSynced is called once all the initial event handlers were called and the state is fully propagated to local cache.

func (*Proxier) OnEndpointsUpdate 

func (proxier *Proxier) OnEndpointsUpdate(oldEndpoints, endpoints *v1.Endpoints)

OnEndpointsUpdate is called whenever modification of an existing endpoints object is observed.

func (*Proxier) OnServiceAdd 

func (proxier *Proxier) OnServiceAdd(service *v1.Service)

OnServiceAdd is called whenever creation of new service object is observed.

func (*Proxier) OnServiceDelete 

func (proxier *Proxier) OnServiceDelete(service *v1.Service)

OnServiceDelete is called whenever deletion of an existing service object is observed.

func (*Proxier) OnServiceSynced 

func (proxier *Proxier) OnServiceSynced()

OnServiceSynced is called once all the initial even handlers were called and the state is fully propagated to local cache.

func (*Proxier) OnServiceUpdate 

func (proxier *Proxier) OnServiceUpdate(oldService, service *v1.Service)

OnServiceUpdate is called whenever modification of an existing service object is observed.

func (*Proxier) Sync 

func (proxier *Proxier) Sync()

Sync is called to synchronize the proxier state to iptables and ipvs as soon as possible.

func (*Proxier) SyncLoop 

func (proxier *Proxier) SyncLoop()

SyncLoop runs periodic work. This is expected to run as a goroutine or as the main loop of the app. It does not return.

Source Files

graceful_termination.go ipset.go netlink.go netlink_unsupported.go proxier.go

Directories

PathSynopsis
pkg/proxy/ipvs/testing
Version
v1.13.5
Published
Mar 22, 2019
Platform
js/wasm
Imports
29 packages
Last checked
4 seconds ago –

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