app

Documentation

Overview

Package app makes it easy to create a kubelet server for various contexts.

Index

• func ProbeVolumePlugins() []volume.Plugin
• func RunKubelet(kcfg *KubeletConfig)
• func SimpleRunKubelet(client *client.Client, dockerClient dockertools.DockerInterface, ...)
• type KubeletConfig
• type KubeletServer
  • func NewKubeletServer() *KubeletServer
  • func (s *KubeletServer) AddFlags(fs *pflag.FlagSet)
  • func (s *KubeletServer) Run(_ []string) error

Functions

func ProbeVolumePlugins

func ProbeVolumePlugins() []volume.Plugin

ProbeVolumePlugins collects all volume plugins into an easy to use list.

func RunKubelet

func RunKubelet(kcfg *KubeletConfig)

RunKubelet is responsible for setting up and running a kubelet. It is used in three different applications:

1 Integration tests
2 Kubelet binary
3 Standalone 'kubernetes' binary

Eventually, #2 will be replaced with instances of #3

func SimpleRunKubelet

func SimpleRunKubelet(client *client.Client,
	dockerClient dockertools.DockerInterface,
	hostname, rootDir, manifestURL, address string,
	port uint,
	masterServiceNamespace string,
	volumePlugins []volume.Plugin,
	tlsOptions *kubelet.TLSOptions,
	cadvisorInterface cadvisor.Interface)

SimpleRunKubelet is a simple way to start a Kubelet talking to dockerEndpoint, using an API Client. Under the hood it calls RunKubelet (below)

Types

type KubeletConfig

type KubeletConfig struct {
	KubeClient                     *client.Client
	DockerClient                   dockertools.DockerInterface
	CadvisorInterface              cadvisor.Interface
	Address                        util.IP
	AllowPrivileged                bool
	HostnameOverride               string
	RootDirectory                  string
	ConfigFile                     string
	ManifestURL                    string
	StatusUpdateFrequency          time.Duration
	FileCheckFrequency             time.Duration
	HTTPCheckFrequency             time.Duration
	Hostname                       string
	PodInfraContainerImage         string
	SyncFrequency                  time.Duration
	RegistryPullQPS                float64
	RegistryBurst                  int
	MinimumGCAge                   time.Duration
	MaxContainerCount              int
	ClusterDomain                  string
	ClusterDNS                     util.IP
	EnableServer                   bool
	EnableDebuggingHandlers        bool
	Port                           uint
	Runonce                        bool
	MasterServiceNamespace         string
	VolumePlugins                  []volume.Plugin
	StreamingConnectionIdleTimeout time.Duration
	Recorder                       record.EventRecorder
	TLSOptions                     *kubelet.TLSOptions
}

KubeletConfig is all of the parameters necessary for running a kubelet. TODO: This should probably be merged with KubeletServer. The extra object is a consequence of refactoring.

type KubeletServer

type KubeletServer struct {
	Config                         string
	SyncFrequency                  time.Duration
	FileCheckFrequency             time.Duration
	HTTPCheckFrequency             time.Duration
	StatusUpdateFrequency          time.Duration
	ManifestURL                    string
	EnableServer                   bool
	Address                        util.IP
	Port                           uint
	HostnameOverride               string
	PodInfraContainerImage         string
	DockerEndpoint                 string
	RootDirectory                  string
	AllowPrivileged                bool
	RegistryPullQPS                float64
	RegistryBurst                  int
	RunOnce                        bool
	EnableDebuggingHandlers        bool
	MinimumGCAge                   time.Duration
	MaxContainerCount              int
	AuthPath                       string
	CadvisorPort                   uint
	OOMScoreAdj                    int
	APIServerList                  util.StringList
	ClusterDomain                  string
	MasterServiceNamespace         string
	ClusterDNS                     util.IP
	ReallyCrashForTesting          bool
	StreamingConnectionIdleTimeout time.Duration
}

KubeletServer encapsulates all of the parameters necessary for starting up a kubelet. These can either be set via command line or directly.

func NewKubeletServer

func NewKubeletServer() *KubeletServer

NewKubeletServer will create a new KubeletServer with default values.

func (*KubeletServer) AddFlags

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

AddFlags adds flags for a specific KubeletServer to the specified FlagSet

func (*KubeletServer) Run

func (s *KubeletServer) Run(_ []string) error

Run runs the specified KubeletServer. This should never exit.