kubernetes/cmd/kubeadm/app/features/features.go

const PublicKeysECDSA …

const RootlessControlPlane …

const EtcdLearnerMode …

const WaitForAllControlPlaneComponents …

const ControlPlaneKubeletLocalMode …

var InitFeatureGates …

type Feature …

type FeatureList …

// ValidateVersion ensures that a feature gate list is compatible with the chosen Kubernetes version
func ValidateVersion(allFeatures FeatureList, requestedFeatures map[string]bool, requestedVersion string) error { … }

// Enabled indicates whether a feature name has been enabled
func Enabled(featureList map[string]bool, featureName string) bool { … }

// Supports indicates whether a feature name is supported on the given
// feature set
func Supports(featureList FeatureList, featureName string) bool { … }

// KnownFeatures returns a slice of strings describing the FeatureList features.
func KnownFeatures(f *FeatureList) []string { … }

// NewFeatureGate parses a string of the form "key1=value1,key2=value2,..." into a
// map[string]bool of known keys or returns an error.
func NewFeatureGate(f *FeatureList, value string) (map[string]bool, error) { … }

// CheckDeprecatedFlags takes a list of existing feature gate flags and validates against the current feature flag set.
// It used during upgrades for ensuring consistency of feature gates used in an existing cluster, that might
// be created with a previous version of kubeadm, with the set of features currently supported by kubeadm
func CheckDeprecatedFlags(f *FeatureList, features map[string]bool) map[string]string { … }