kubeadm: fix export comments to make golangci-lint happy

cmd/kubeadm/app/apis/kubeadm/v1beta3/conversion.go

@@ -24,14 +24,17 @@ import (
 	"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 )
 
+// Convert_kubeadm_InitConfiguration_To_v1beta3_InitConfiguration converts a private InitConfiguration to public InitConfiguration.
 func Convert_kubeadm_InitConfiguration_To_v1beta3_InitConfiguration(in *kubeadm.InitConfiguration, out *InitConfiguration, s conversion.Scope) error {
 	return autoConvert_kubeadm_InitConfiguration_To_v1beta3_InitConfiguration(in, out, s)
 }
 
+// Convert_kubeadm_JoinConfiguration_To_v1beta3_JoinConfiguration converts a private JoinConfiguration to public JoinConfiguration.
 func Convert_kubeadm_JoinConfiguration_To_v1beta3_JoinConfiguration(in *kubeadm.JoinConfiguration, out *JoinConfiguration, s conversion.Scope) error {
 	return autoConvert_kubeadm_JoinConfiguration_To_v1beta3_JoinConfiguration(in, out, s)
 }
 
+// Convert_v1beta3_InitConfiguration_To_kubeadm_InitConfiguration converts a public InitConfiguration to private InitConfiguration.
 func Convert_v1beta3_InitConfiguration_To_kubeadm_InitConfiguration(in *InitConfiguration, out *kubeadm.InitConfiguration, s conversion.Scope) error {
 	err := autoConvert_v1beta3_InitConfiguration_To_kubeadm_InitConfiguration(in, out, s)
 	if err != nil {
@@ -65,6 +68,7 @@ func Convert_v1beta3_ControlPlaneComponent_To_kubeadm_ControlPlaneComponent(in *
 	return autoConvert_v1beta3_ControlPlaneComponent_To_kubeadm_ControlPlaneComponent(in, out, s)
 }
 
+// Convert_kubeadm_ControlPlaneComponent_To_v1beta3_ControlPlaneComponent converts a private ControlPlaneComponent to public ControlPlaneComponent.
 func Convert_kubeadm_ControlPlaneComponent_To_v1beta3_ControlPlaneComponent(in *kubeadm.ControlPlaneComponent, out *ControlPlaneComponent, s conversion.Scope) error {
 	out.ExtraArgs = convertFromArgs(in.ExtraArgs)
 	return autoConvert_kubeadm_ControlPlaneComponent_To_v1beta3_ControlPlaneComponent(in, out, s)
@@ -77,16 +81,19 @@ func Convert_v1beta3_LocalEtcd_To_kubeadm_LocalEtcd(in *LocalEtcd, out *kubeadm.
 	return autoConvert_v1beta3_LocalEtcd_To_kubeadm_LocalEtcd(in, out, s)
 }
 
+// Convert_kubeadm_LocalEtcd_To_v1beta3_LocalEtcd converts a private LocalEtcd to public LocalEtcd.
 func Convert_kubeadm_LocalEtcd_To_v1beta3_LocalEtcd(in *kubeadm.LocalEtcd, out *LocalEtcd, s conversion.Scope) error {
 	out.ExtraArgs = convertFromArgs(in.ExtraArgs)
 	return autoConvert_kubeadm_LocalEtcd_To_v1beta3_LocalEtcd(in, out, s)
 }
 
+// Convert_v1beta3_NodeRegistrationOptions_To_kubeadm_NodeRegistrationOptions converts a public NodeRegistrationOptions to private NodeRegistrationOptions.
 func Convert_v1beta3_NodeRegistrationOptions_To_kubeadm_NodeRegistrationOptions(in *NodeRegistrationOptions, out *kubeadm.NodeRegistrationOptions, s conversion.Scope) error {
 	out.KubeletExtraArgs = convertToArgs(in.KubeletExtraArgs)
 	return autoConvert_v1beta3_NodeRegistrationOptions_To_kubeadm_NodeRegistrationOptions(in, out, s)
 }
 
+// Convert_kubeadm_NodeRegistrationOptions_To_v1beta3_NodeRegistrationOptions converts a private NodeRegistrationOptions to public NodeRegistrationOptions.
 func Convert_kubeadm_NodeRegistrationOptions_To_v1beta3_NodeRegistrationOptions(in *kubeadm.NodeRegistrationOptions, out *NodeRegistrationOptions, s conversion.Scope) error {
 	out.KubeletExtraArgs = convertFromArgs(in.KubeletExtraArgs)
 	return autoConvert_kubeadm_NodeRegistrationOptions_To_v1beta3_NodeRegistrationOptions(in, out, s)

cmd/kubeadm/app/apis/kubeadm/v1beta3/defaults.go

@@ -135,6 +135,7 @@ func SetDefaults_JoinConfiguration(obj *JoinConfiguration) {
 	SetDefaults_NodeRegistration(&obj.NodeRegistration)
 }
 
+// SetDefaults_JoinControlPlane assigns default values for a joining control plane node
 func SetDefaults_JoinControlPlane(obj *JoinControlPlane) {
 	if obj != nil {
 		SetDefaults_APIEndpoint(&obj.LocalAPIEndpoint)

cmd/kubeadm/app/apis/kubeadm/v1beta4/conversion.go

@@ -22,10 +22,12 @@ import (
 	"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 )
 
+// Convert_kubeadm_InitConfiguration_To_v1beta4_InitConfiguration converts a private InitConfiguration to a public InitConfiguration.
 func Convert_kubeadm_InitConfiguration_To_v1beta4_InitConfiguration(in *kubeadm.InitConfiguration, out *InitConfiguration, s conversion.Scope) error {
 	return autoConvert_kubeadm_InitConfiguration_To_v1beta4_InitConfiguration(in, out, s)
 }
 
+// Convert_v1beta4_InitConfiguration_To_kubeadm_InitConfiguration converts a public InitConfiguration to a private InitConfiguration.
 func Convert_v1beta4_InitConfiguration_To_kubeadm_InitConfiguration(in *InitConfiguration, out *kubeadm.InitConfiguration, s conversion.Scope) error {
 	err := autoConvert_v1beta4_InitConfiguration_To_kubeadm_InitConfiguration(in, out, s)
 	if err != nil {

cmd/kubeadm/app/apis/kubeadm/v1beta4/defaults.go

@@ -142,6 +142,7 @@ func SetDefaults_JoinConfiguration(obj *JoinConfiguration) {
 	SetDefaults_NodeRegistration(&obj.NodeRegistration)
 }
 
+// SetDefaults_JoinControlPlane assigns default values for a joining control plane node
 func SetDefaults_JoinControlPlane(obj *JoinControlPlane) {
 	if obj != nil {
 		SetDefaults_APIEndpoint(&obj.LocalAPIEndpoint)

cmd/kubeadm/app/cmd/phases/reset/cleanupnode.go

@@ -212,6 +212,7 @@ func CleanDir(filePath string) error {
 	return nil
 }
 
+// IsDirEmpty returns true if a directory is empty
 func IsDirEmpty(dir string) (bool, error) {
 	d, err := os.Open(dir)
 	if err != nil {

cmd/kubeadm/app/cmd/upgrade/common.go

@@ -120,6 +120,7 @@ func loadConfig(cfgPath string, client clientset.Interface, skipComponentConfigs
 	return initCfg, false, nil
 }
 
+// LoadConfigFunc is a function type that loads configuration from a file and/or the cluster.
 type LoadConfigFunc func(cfgPath string, client clientset.Interface, skipComponentConfigs bool, printer output.Printer) (*kubeadmapi.InitConfiguration, bool, error)
 
 // enforceRequirements verifies that it's okay to upgrade and then returns the variables needed for the rest of the procedure

cmd/kubeadm/app/phases/upgrade/postupgrade.go

@@ -248,6 +248,7 @@ func unupgradedControlPlaneInstances(client clientset.Interface, nodeName string
 	return nil, nil
 }
 
+// WriteKubeletConfigFiles writes the kubelet config file to disk, but first creates a backup of any existing one.
 func WriteKubeletConfigFiles(cfg *kubeadmapi.InitConfiguration, patchesDir string, dryRun bool, out io.Writer) error {
 	// Set up the kubelet directory to use. If dry-running, this will return a fake directory
 	kubeletDir, err := GetKubeletDir(dryRun)

cmd/kubeadm/app/preflight/checks.go

@@ -893,6 +893,7 @@ func (MemCheck) Name() string {
 	return "Mem"
 }
 
+// InitNodeChecks returns checks specific to "kubeadm init"
 func InitNodeChecks(execer utilsexec.Interface, cfg *kubeadmapi.InitConfiguration, ignorePreflightErrors sets.Set[string], isSecondaryControlPlane bool, downloadCerts bool) ([]Checker, error) {
 	if !isSecondaryControlPlane {
 		// First, check if we're root separately from the other preflight checks and fail fast
@@ -1013,6 +1014,7 @@ func RunInitNodeChecks(execer utilsexec.Interface, cfg *kubeadmapi.InitConfigura
 	return RunChecks(checks, os.Stderr, ignorePreflightErrors)
 }
 
+// JoinNodeChecks returns checks specific to "kubeadm join"
 func JoinNodeChecks(execer utilsexec.Interface, cfg *kubeadmapi.JoinConfiguration, ignorePreflightErrors sets.Set[string]) ([]Checker, error) {
 	// First, check if we're root separately from the other preflight checks and fail fast
 	if err := RunRootCheckOnly(ignorePreflightErrors); err != nil {

cmd/kubeadm/app/util/error.go

@@ -38,8 +38,10 @@ const (
 )
 
 var (
+	// ErrInvalidSubCommandMsg is an error message returned on invalid subcommands
 	ErrInvalidSubCommandMsg = "invalid subcommand"
-	ErrExit                 = errors.New("exit")
+	// ErrExit is an error returned when kubeadm is about to exit
+	ErrExit = errors.New("exit")
 )
 
 // fatal prints the message if set and then exits.

cmd/kubeadm/app/util/etcd/etcd.go

@@ -53,6 +53,8 @@ var etcdBackoff = wait.Backoff{
 	Jitter:   0.1,
 }
 
+// ErrNoMemberIDForPeerURL is returned when it is not possible to obtain a member ID
+// from a given peer URL
 var ErrNoMemberIDForPeerURL = errors.New("no member id found for peer URL")
 
 // ClusterInterrogator is an interface to get etcd cluster related information

cmd/kubeadm/app/util/patches/patches.go

@@ -75,6 +75,7 @@ func (ps *patchSet) String() string {
 	)
 }
 
+// KubeletConfiguration defines the kubeletconfiguration patch target.
 const KubeletConfiguration = "kubeletconfiguration"
 
 var (
@@ -102,6 +103,7 @@ var (
 	}
 )
 
+// KnownTargets returns the locally defined knownTargets.
 func KnownTargets() []string {
 	return knownTargets
 }

cmd/kubeadm/app/util/pkiutil/pki_helpers.go

@@ -623,6 +623,7 @@ func EncodePublicKeyPEM(key crypto.PublicKey) ([]byte, error) {
 // NewPrivateKey returns a new private key.
 var NewPrivateKey = GeneratePrivateKey
 
+// GeneratePrivateKey is the default function for generating private keys.
 func GeneratePrivateKey(keyType kubeadmapi.EncryptionAlgorithmType) (crypto.Signer, error) {
 	if keyType == kubeadmapi.EncryptionAlgorithmECDSA {
 		return ecdsa.GenerateKey(elliptic.P256(), cryptorand.Reader)

cmd/kubeadm/app/util/staticpod/utils.go

@@ -411,6 +411,8 @@ func getProbeAddress(addr string) string {
 	return addr
 }
 
+// GetUsersAndGroups returns the local usersAndGroups, but first creates it
+// in a thread safe way once.
 func GetUsersAndGroups() (*users.UsersAndGroups, error) {
 	var err error
 	usersAndGroupsOnce.Do(func() {

cmd/kubeadm/app/util/users/users_linux.go

@@ -129,7 +129,7 @@ func (u *EntryMap) String() string {
 	return strings.Join(lines, "")
 }
 
-// Is a public wrapper around addUsersAndGroupsImpl with default system file paths.
+// AddUsersAndGroups is a public wrapper around addUsersAndGroupsImpl with default system file paths.
 func AddUsersAndGroups() (*UsersAndGroups, error) {
 	return addUsersAndGroupsImpl(fileEtcLoginDefs, fileEtcPasswd, fileEtcGroup)
 }