func AddGlobalFlags(fs *pflag.FlagSet)
AddGlobalFlags explicitly registers flags that libraries (glog, verflag, etc.) register against the global flagsets from "flag" and "github.com/spf13/pflag". We do this in order to prevent unwanted flags from leaking into the Kubelet's flagset.
func AddKubeletConfigFlags(mainfs *pflag.FlagSet, c *kubeletconfig.KubeletConfiguration)
AddKubeletConfigFlags adds flags for a specific kubeletconfig.KubeletConfiguration to the specified FlagSet
func NewContainerRuntimeOptions() *config.ContainerRuntimeOptions
NewContainerRuntimeOptions will create a new ContainerRuntimeOptions with default values.
func NewKubeletConfiguration() (*kubeletconfig.KubeletConfiguration, error)
NewKubeletConfiguration will create a new KubeletConfiguration with default values
func ValidateKubeletFlags(f *KubeletFlags) error
ValidateKubeletFlags validates Kubelet's configuration flags and returns an error if they are invalid.
func ValidateKubeletServer(s *KubeletServer) error
ValidateKubeletServer validates configuration of KubeletServer and returns an error if the input configuration is invalid.
KubeletFlags contains configuration flags for the Kubelet. A configuration field should go in KubeletFlags instead of KubeletConfiguration if any of these are true:
In general, please try to avoid adding flags or configuration fields, we already have a confusingly large amount of them.
type KubeletFlags struct {
KubeConfig string
BootstrapKubeconfig string
// HostnameOverride is the hostname used to identify the kubelet instead
// of the actual hostname.
HostnameOverride string
// NodeIP is IP address of the node.
// If set, kubelet will use this IP address for the node.
NodeIP string
// Container-runtime-specific options.
config.ContainerRuntimeOptions
// certDirectory is the directory where the TLS certs are located.
// If tlsCertFile and tlsPrivateKeyFile are provided, this flag will be ignored.
CertDirectory string
// cloudProvider is the provider for cloud services.
// +optional
CloudProvider string
// cloudConfigFile is the path to the cloud provider configuration file.
// +optional
CloudConfigFile string
// rootDirectory is the directory path to place kubelet files (volume
// mounts,etc).
RootDirectory string
// The Kubelet will load its initial configuration from this file.
// The path may be absolute or relative; relative paths are under the Kubelet's current working directory.
// Omit this flag to use the combination of built-in default configuration values and flags.
KubeletConfigFile string
// kubeletDropinConfigDirectory is a path to a directory to specify dropins allows the user to optionally specify
// additional configs to overwrite what is provided by default and in the KubeletConfigFile flag
KubeletDropinConfigDirectory string
// WindowsService should be set to true if kubelet is running as a service on Windows.
// Its corresponding flag only gets registered in Windows builds.
WindowsService bool
// WindowsPriorityClass sets the priority class associated with the Kubelet process
// Its corresponding flag only gets registered in Windows builds
// The default priority class associated with any process in Windows is NORMAL_PRIORITY_CLASS. Keeping it as is
// to maintain backwards compatibility.
// Source: https://docs.microsoft.com/en-us/windows/win32/procthread/scheduling-priorities
WindowsPriorityClass string
// experimentalMounterPath is the path of mounter binary. Leave empty to use the default mount path
ExperimentalMounterPath string
// This flag, if set, will avoid including `EvictionHard` limits while computing Node Allocatable.
// Refer to [Node Allocatable](https://kubernetes.io/docs/tasks/administer-cluster/reserve-compute-resources/#node-allocatable) doc for more information.
ExperimentalNodeAllocatableIgnoreEvictionThreshold bool
// Node Labels are the node labels to add when registering the node in the cluster
NodeLabels map[string]string
// lockFilePath is the path that kubelet will use to as a lock file.
// It uses this file as a lock to synchronize with other kubelet processes
// that may be running.
LockFilePath string
// ExitOnLockContention is a flag that signifies to the kubelet that it is running
// in "bootstrap" mode. This requires that 'LockFilePath' has been set.
// This will cause the kubelet to listen to inotify events on the lock file,
// releasing it and exiting when another process tries to open that file.
ExitOnLockContention bool
// DEPRECATED FLAGS
// minimumGCAge is the minimum age for a finished container before it is
// garbage collected.
MinimumGCAge metav1.Duration
// maxPerPodContainerCount is the maximum number of old instances to
// retain per container. Each container takes up some disk space.
MaxPerPodContainerCount int32
// maxContainerCount is the maximum number of old instances of containers
// to retain globally. Each container takes up some disk space.
MaxContainerCount int32
// registerSchedulable tells the kubelet to register the node as
// schedulable. Won't have any effect if register-node is false.
// DEPRECATED: use registerWithTaints instead
RegisterSchedulable bool
// This flag, if set, instructs the kubelet to keep volumes from terminated pods mounted to the node.
// This can be useful for debugging volume related issues.
KeepTerminatedPodVolumes bool
// SeccompDefault enables the use of `RuntimeDefault` as the default seccomp profile for all workloads on the node.
SeccompDefault bool
}
func NewKubeletFlags() *KubeletFlags
NewKubeletFlags will create a new KubeletFlags with default values
func (f *KubeletFlags) AddFlags(mainfs *pflag.FlagSet)
AddFlags adds flags for a specific KubeletFlags to the specified FlagSet
KubeletServer encapsulates all of the parameters necessary for starting up a kubelet. These can either be set via command line or directly.
type KubeletServer struct {
KubeletFlags
kubeletconfig.KubeletConfiguration
}
func NewKubeletServer() (*KubeletServer, error)
NewKubeletServer will create a new KubeletServer with default values.
func (s *KubeletServer) AddFlags(fs *pflag.FlagSet)
AddFlags adds flags for a specific KubeletServer to the specified FlagSet