Documentation
¶
Overview ¶
Package app makes it easy to create a kubelet server for various contexts.
Index ¶
- func NewKubeletCommand() *cobra.Command
- func ProbeNetworkPlugins(pluginDir string) []network.NetworkPlugin
- func ProbeVolumePlugins() []volume.VolumePlugin
- func RunKubelet(kcfg *KubeletConfig, builder KubeletBuilder) error
- type KubeletBootstrap
- type KubeletBuilder
- type KubeletConfig
- type KubeletServer
- func (s *KubeletServer) AddFlags(fs *pflag.FlagSet)
- func (s *KubeletServer) CreateAPIServerClientConfig() (*client.Config, error)
- func (s *KubeletServer) InitializeTLS() (*kubelet.TLSOptions, error)
- func (s *KubeletServer) KubeletConfig() (*KubeletConfig, error)
- func (s *KubeletServer) Run(kcfg *KubeletConfig) error
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func NewKubeletCommand ¶ added in v1.1.1
func NewKubeletCommand() *cobra.Command
NewKubeletCommand creates a *cobra.Command object with default parameters
func ProbeNetworkPlugins ¶ added in v0.14.0
func ProbeNetworkPlugins(pluginDir string) []network.NetworkPlugin
ProbeNetworkPlugins collects all compiled-in plugins
func ProbeVolumePlugins ¶
func ProbeVolumePlugins() []volume.VolumePlugin
ProbeVolumePlugins collects all volume plugins into an easy to use list.
func RunKubelet ¶ added in v0.12.0
func RunKubelet(kcfg *KubeletConfig, builder KubeletBuilder) error
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
Types ¶
type KubeletBootstrap ¶ added in v0.15.0
type KubeletBootstrap interface {
BirthCry()
StartGarbageCollection()
ListenAndServe(net.IP, uint, *kubelet.TLSOptions, bool)
ListenAndServeReadOnly(net.IP, uint)
Run(<-chan kubelet.PodUpdate)
RunOnce(<-chan kubelet.PodUpdate) ([]kubelet.RunPodResult, error)
}
bootstrapping interface for kubelet, targets the initialization protocol
type KubeletBuilder ¶ added in v0.15.0
type KubeletBuilder func(kc *KubeletConfig) (KubeletBootstrap, *config.PodConfig, error)
create and initialize a Kubelet instance
type KubeletConfig ¶ added in v0.12.0
type KubeletConfig struct {
Address net.IP
AllowPrivileged bool
CAdvisorInterface cadvisor.Interface
CgroupRoot string
Cloud cloudprovider.Interface
ClusterDNS net.IP
ClusterDomain string
ConfigFile string
ConfigureCBR0 bool
ContainerRuntime string
CPUCFSQuota bool
DiskSpacePolicy kubelet.DiskSpacePolicy
DockerClient dockertools.DockerInterface
DockerDaemonContainer string
DockerExecHandler dockertools.ExecHandler
EnableDebuggingHandlers bool
EnableServer bool
EventBurst int
EventRecordQPS float32
FileCheckFrequency time.Duration
Hostname string
HostnameOverride string
HostNetworkSources []string
HostPIDSources []string
HostIPCSources []string
HTTPCheckFrequency time.Duration
ImageGCPolicy kubelet.ImageGCPolicy
KubeClient *client.Client
ManifestURL string
ManifestURLHeader http.Header
MasterServiceNamespace string
MaxContainerCount int
MaxOpenFiles uint64
MaxPerPodContainerCount int
MaxPods int
MinimumGCAge time.Duration
Mounter mount.Interface
NetworkPluginName string
NetworkPlugins []network.NetworkPlugin
NodeName string
NodeStatusUpdateFrequency time.Duration
OSInterface kubecontainer.OSInterface
PodCIDR string
PodInfraContainerImage string
Port uint
ReadOnlyPort uint
Recorder record.EventRecorder
RegisterNode bool
RegistryBurst int
RegistryPullQPS float64
ResolverConfig string
ResourceContainer string
RktPath string
RktStage1Image string
RootDirectory string
Runonce bool
SerializeImagePulls bool
StandaloneMode bool
StreamingConnectionIdleTimeout time.Duration
SyncFrequency time.Duration
SystemContainer string
TLSOptions *kubelet.TLSOptions
Writer io.Writer
VolumePlugins []volume.VolumePlugin
}
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.
func SimpleKubelet ¶ added in v0.14.0
func SimpleKubelet(client *client.Client,
dockerClient dockertools.DockerInterface,
hostname, rootDir, manifestURL, address string,
port uint,
readOnlyPort uint,
masterServiceNamespace string,
volumePlugins []volume.VolumePlugin,
tlsOptions *kubelet.TLSOptions,
cadvisorInterface cadvisor.Interface,
configFilePath string,
cloud cloudprovider.Interface,
osInterface kubecontainer.OSInterface,
fileCheckFrequency, httpCheckFrequency, minimumGCAge, nodeStatusUpdateFrequency, syncFrequency time.Duration) *KubeletConfig
SimpleRunKubelet is a simple way to start a Kubelet talking to dockerEndpoint, using an API Client. Under the hood it calls RunKubelet (below)
type KubeletServer ¶ added in v0.12.0
type KubeletServer struct {
Address net.IP
AllowPrivileged bool
APIServerList []string
AuthPath util.StringFlag // Deprecated -- use KubeConfig instead
CAdvisorPort uint
CertDirectory string
CgroupRoot string
CloudConfigFile string
CloudProvider string
ClusterDNS net.IP
ClusterDomain string
Config string
ConfigureCBR0 bool
ContainerRuntime string
CPUCFSQuota bool
DockerDaemonContainer string
DockerEndpoint string
DockerExecHandlerName string
EnableDebuggingHandlers bool
EnableServer bool
EventBurst int
EventRecordQPS float32
FileCheckFrequency time.Duration
HealthzBindAddress net.IP
HealthzPort int
HostnameOverride string
HostNetworkSources string
HostPIDSources string
HostIPCSources string
HTTPCheckFrequency time.Duration
ImageGCHighThresholdPercent int
ImageGCLowThresholdPercent int
KubeConfig util.StringFlag
LowDiskSpaceThresholdMB int
ManifestURL string
ManifestURLHeader string
MasterServiceNamespace string
MaxContainerCount int
MaxOpenFiles uint64
MaxPerPodContainerCount int
MaxPods int
MinimumGCAge time.Duration
NetworkPluginDir string
NetworkPluginName string
NodeStatusUpdateFrequency time.Duration
OOMScoreAdj int
PodCIDR string
PodInfraContainerImage string
Port uint
ReadOnlyPort uint
RegisterNode bool
RegistryBurst int
RegistryPullQPS float64
ResolverConfig string
ResourceContainer string
RktPath string
RktStage1Image string
RootDirectory string
RunOnce bool
StandaloneMode bool
StreamingConnectionIdleTimeout time.Duration
SyncFrequency time.Duration
SystemContainer string
TLSCertFile string
TLSPrivateKeyFile string
// Flags intended for testing
// Is the kubelet containerized?
Containerized bool
// Insert a probability of random errors during calls to the master.
ChaosChance float64
// Crash immediately, rather than eating panics.
ReallyCrashForTesting bool
// Pull images one at a time.
SerializeImagePulls bool
}
KubeletServer encapsulates all of the parameters necessary for starting up a kubelet. These can either be set via command line or directly.
func NewKubeletServer ¶ added in v0.12.0
func NewKubeletServer() *KubeletServer
NewKubeletServer will create a new KubeletServer with default values.
func (*KubeletServer) AddFlags ¶ added in v0.12.0
func (s *KubeletServer) AddFlags(fs *pflag.FlagSet)
AddFlags adds flags for a specific KubeletServer to the specified FlagSet
func (*KubeletServer) CreateAPIServerClientConfig ¶ added in v0.20.0
func (s *KubeletServer) CreateAPIServerClientConfig() (*client.Config, error)
CreateAPIServerClientConfig generates a client.Config from command line flags, including api-server-list, via createClientConfig and then injects chaos into the configuration via addChaosToClientConfig. This func is exported to support integration with third party kubelet extensions (e.g. kubernetes-mesos).
func (*KubeletServer) InitializeTLS ¶ added in v0.19.0
func (s *KubeletServer) InitializeTLS() (*kubelet.TLSOptions, error)
InitializeTLS checks for a configured TLSCertFile and TLSPrivateKeyFile: if unspecified a new self-signed certificate and key file are generated. Returns a configured kubelet.TLSOptions object.
func (*KubeletServer) KubeletConfig ¶ added in v1.1.0
func (s *KubeletServer) KubeletConfig() (*KubeletConfig, error)
KubeletConfig returns a KubeletConfig suitable for being run, or an error if the server setup is not valid. It will not start any background processes.
func (*KubeletServer) Run ¶ added in v0.12.0
func (s *KubeletServer) Run(kcfg *KubeletConfig) error
Run runs the specified KubeletServer for the given KubeletConfig. This should never exit. The kcfg argument may be nil - if so, it is initialized from the settings on KubeletServer. Otherwise, the caller is assumed to have set up the KubeletConfig object and all defaults will be ignored.
Source Files