config

Documentation

Overview

Package config implements the pod configuration readers.

Package config implements the pod configuration readers.

Index

• Constants
• func NewSourceApiserver(c clientset.Interface, nodeName types.NodeName, nodeHasSynced func() bool, ...)
• func NewSourceFile(path string, nodeName types.NodeName, period time.Duration, ...)
• func NewSourceURL(url string, header http.Header, nodeName types.NodeName, period time.Duration, ...)
• type ContainerRuntimeOptions
  • func (s *ContainerRuntimeOptions) AddFlags(fs *pflag.FlagSet)
• type PodConfig
  • func NewPodConfig(mode PodConfigNotificationMode, recorder record.EventRecorder) *PodConfig
  • func (c *PodConfig) Channel(source string) chan<- interface{}
  • func (c *PodConfig) SeenAllSources(seenSources sets.String) bool
  • func (c *PodConfig) Sync()
  • func (c *PodConfig) Updates() <-chan kubetypes.PodUpdate
• type PodConfigNotificationMode
• type SourcesReady
  • func NewSourcesReady(sourcesReadyFn SourcesReadyFn) SourcesReady
• type SourcesReadyFn

Constants

const (
	DefaultKubeletPodsDirName                = "pods"
	DefaultKubeletVolumesDirName             = "volumes"
	DefaultKubeletVolumeSubpathsDirName      = "volume-subpaths"
	DefaultKubeletVolumeDevicesDirName       = "volumeDevices"
	DefaultKubeletPluginsDirName             = "plugins"
	DefaultKubeletPluginsRegistrationDirName = "plugins_registry"
	DefaultKubeletContainersDirName          = "containers"
	DefaultKubeletPluginContainersDirName    = "plugin-containers"
	DefaultKubeletPodResourcesDirName        = "pod-resources"
	KubeletPluginsDirSELinuxLabel            = "system_u:object_r:container_file_t:s0"
)

Defines sane defaults for the kubelet config.

const WaitForAPIServerSyncPeriod = 1 * time.Second

WaitForAPIServerSyncPeriod is the period between checks for the node list/watch initial sync

Functions

func NewSourceApiserver

func NewSourceApiserver(c clientset.Interface, nodeName types.NodeName, nodeHasSynced func() bool, updates chan<- interface{})

NewSourceApiserver creates a config source that watches and pulls from the apiserver.

func NewSourceFile

func NewSourceFile(path string, nodeName types.NodeName, period time.Duration, updates chan<- interface{})

NewSourceFile watches a config file for changes.

func NewSourceURL

func NewSourceURL(url string, header http.Header, nodeName types.NodeName, period time.Duration, updates chan<- interface{})

NewSourceURL specifies the URL where to read the Pod configuration from, then watches it for changes.

Types

type ContainerRuntimeOptions

type ContainerRuntimeOptions struct {

	// ContainerRuntime is the container runtime to use.
	ContainerRuntime string
	// RuntimeCgroups that container runtime is expected to be isolated in.
	RuntimeCgroups string

	// DockershimRootDirectory is the path to the dockershim root directory. Defaults to
	// /var/lib/dockershim if unset. Exposed for integration testing (e.g. in OpenShift).
	DockershimRootDirectory string
	// PodSandboxImage is the image whose network/ipc namespaces
	// containers in each pod will use.
	PodSandboxImage string
	// DockerEndpoint is the path to the docker endpoint to communicate with.
	DockerEndpoint string
	// If no pulling progress is made before the deadline imagePullProgressDeadline,
	// the image pulling will be cancelled. Defaults to 1m0s.
	// +optional
	ImagePullProgressDeadline metav1.Duration

	// networkPluginName is the name of the network plugin to be invoked for
	// various events in kubelet/pod lifecycle
	NetworkPluginName string
	// NetworkPluginMTU is the MTU to be passed to the network plugin,
	// and overrides the default MTU for cases where it cannot be automatically
	// computed (such as IPSEC).
	NetworkPluginMTU int32
	// CNIConfDir is the full path of the directory in which to search for
	// CNI config files
	CNIConfDir string
	// CNIBinDir is the full path of the directory in which to search for
	// CNI plugin binaries
	CNIBinDir string
	// CNICacheDir is the full path of the directory in which CNI should store
	// cache files
	CNICacheDir string

	// ImageCredentialProviderConfigFile is the path to the credential provider plugin config file.
	// This config file is a specification for what credential providers are enabled and invokved
	// by the kubelet. The plugin config should contain information about what plugin binary
	// to execute and what container images the plugin should be called for.
	// +optional
	ImageCredentialProviderConfigFile string
	// ImageCredentialProviderBinDir is the path to the directory where credential provider plugin
	// binaries exist. The name of each plugin binary is expected to match the name of the plugin
	// specified in imageCredentialProviderConfigFile.
	// +optional
	ImageCredentialProviderBinDir string
}

ContainerRuntimeOptions defines options for the container runtime.

func (*ContainerRuntimeOptions) AddFlags

func (s *ContainerRuntimeOptions) AddFlags(fs *pflag.FlagSet)

AddFlags adds flags to the container runtime, according to ContainerRuntimeOptions.

type PodConfig

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

PodConfig is a configuration mux that merges many sources of pod configuration into a single consistent structure, and then delivers incremental change notifications to listeners in order.

func NewPodConfig

func NewPodConfig(mode PodConfigNotificationMode, recorder record.EventRecorder) *PodConfig

NewPodConfig creates an object that can merge many configuration sources into a stream of normalized updates to a pod configuration.

func (*PodConfig) Channel

func (c *PodConfig) Channel(source string) chan<- interface{}

Channel creates or returns a config source channel. The channel only accepts PodUpdates

func (*PodConfig) SeenAllSources

func (c *PodConfig) SeenAllSources(seenSources sets.String) bool

SeenAllSources returns true if seenSources contains all sources in the config, and also this config has received a SET message from each source.

func (*PodConfig) Sync

func (c *PodConfig) Sync()

Sync requests the full configuration be delivered to the update channel.

func (*PodConfig) Updates

func (c *PodConfig) Updates() <-chan kubetypes.PodUpdate

Updates returns a channel of updates to the configuration, properly denormalized.

type PodConfigNotificationMode

type PodConfigNotificationMode int

PodConfigNotificationMode describes how changes are sent to the update channel.

const (
	// PodConfigNotificationUnknown is the default value for
	// PodConfigNotificationMode when uninitialized.
	PodConfigNotificationUnknown PodConfigNotificationMode = iota
	// PodConfigNotificationSnapshot delivers the full configuration as a SET whenever
	// any change occurs.
	PodConfigNotificationSnapshot
	// PodConfigNotificationSnapshotAndUpdates delivers an UPDATE and DELETE message whenever pods are
	// changed, and a SET message if there are any additions or removals.
	PodConfigNotificationSnapshotAndUpdates
	// PodConfigNotificationIncremental delivers ADD, UPDATE, DELETE, REMOVE, RECONCILE to the update channel.
	PodConfigNotificationIncremental
)

type SourcesReady

type SourcesReady interface {
	// AddSource adds the specified source to the set of sources managed.
	AddSource(source string)
	// AllReady returns true if the currently configured sources have all been seen.
	AllReady() bool
}

SourcesReady tracks the set of configured sources seen by the kubelet.

func NewSourcesReady

func NewSourcesReady(sourcesReadyFn SourcesReadyFn) SourcesReady

NewSourcesReady returns a SourcesReady with the specified function.

type SourcesReadyFn

type SourcesReadyFn func(sourcesSeen sets.String) bool

SourcesReadyFn is function that returns true if the specified sources have been seen.