for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			cfg := &kubeadmapiv1.ClusterConfiguration{
				APIServer: kubeadmapiv1.APIServer{
					CertSANs: test.in,
				},
			}

			LowercaseSANs(cfg.APIServer.CertSANs)

			if len(cfg.APIServer.CertSANs) != len(test.out) {
				t.Fatalf("expected %d elements, got %d", len(test.out), len(cfg.APIServer.CertSANs))
			}

			for i, expected := range test.out {

	return cfg.ext.Run(cmd, iptVer, strings.NewReader(data), "--noflush", "-v")
}

func (cfg *IptablesConfigurator) addLoopbackRoute() error {
	return cfg.nlDeps.AddLoopbackRoutes(cfg.cfg)
}

func (cfg *IptablesConfigurator) delLoopbackRoute() error {
	return cfg.nlDeps.DelLoopbackRoutes(cfg.cfg)
}

func (cfg *IptablesConfigurator) addInpodMarkIPRule() error {

		}
	}

	return nil
}

func getKubeConfigSpecsBase(cfg *kubeadmapi.InitConfiguration) (map[string]*kubeConfigSpec, error) {
	controlPlaneEndpoint, err := kubeadmutil.GetControlPlaneEndpoint(cfg.ControlPlaneEndpoint, &cfg.LocalAPIEndpoint)
	if err != nil {
		return nil, err
	}
	localAPIEndpoint, err := kubeadmutil.GetLocalAPIEndpoint(&cfg.LocalAPIEndpoint)
	if err != nil {
		return nil, err
	}

			}
		}
	}

	if cfg.Goarch == "386" {
		// Define GO386_value from cfg.GO386.
		args = append(args, "-D", "GO386_"+cfg.GO386)
	}

	if cfg.Goarch == "amd64" {
		// Define GOAMD64_value from cfg.GOAMD64.
		args = append(args, "-D", "GOAMD64_"+cfg.GOAMD64)
	}

	if cfg.Goarch == "mips" || cfg.Goarch == "mipsle" {
		// Define GOMIPS_value from cfg.GOMIPS.

	if ssc != "" {
		cfg.Standard, err = parseStorageClass(ssc)
		if err != nil {
			return Config{}, err
		}
	} else {
		cfg.Standard.Parity = DefaultParityBlocks(setDriveCount)
	}

	if rrsc != "" {
		cfg.RRS, err = parseStorageClass(rrsc)
		if err != nil {
			return Config{}, err
		}
	} else {
		cfg.RRS.Parity = defaultRRSParity
		if setDriveCount == 1 {

	options := LoadOrDefaultConfigurationOptions{}

	tests := []struct {
		name    string
		cfgPath string
		cfg     *kubeadmapiv1.UpgradeConfiguration
		want    *kubeadmapi.UpgradeConfiguration
	}{
		{
			name:    "cfgpPath is empty, the result should be obtained from cfg",
			cfgPath: "",
			cfg: &kubeadmapiv1.UpgradeConfiguration{
				Apply: kubeadmapiv1.UpgradeApplyConfiguration{
					CertificateRenewal: ptr.To(false),

func checkValidCNIConfig(cfg *config.InstallConfig, cniConfigFilepath string) error {
	defaultCNIConfigFilename, err := getDefaultCNINetwork(cfg.MountedCNINetDir)
	if err != nil {
		return err
	}
	defaultCNIConfigFilepath := filepath.Join(cfg.MountedCNINetDir, defaultCNIConfigFilename)
	if defaultCNIConfigFilepath != cniConfigFilepath {
		if len(cfg.CNIConfName) > 0 || !cfg.ChainedCNIPlugin {

	var cfgList []madmin.IDPListItem
	var err error
	switch idpCfgType {
	case madmin.OpenidIDPCfg:
		cfg := globalServerConfig.Clone()
		cfgList, err = globalIAMSys.OpenIDConfig.GetConfigList(cfg)
	case madmin.LDAPIDPCfg:
		cfg := globalServerConfig.Clone()
		cfgList, err = globalIAMSys.LDAPConfig.GetConfigList(cfg)

	default:
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrNotImplemented), r.URL)
		return
	}

	discoveryAddresses.CIDRRules = append(discoveryAddresses.CIDRRules,
		discovery.CIDRRule{IPRange: cfg.Extra.ServiceIPRange, Address: net.JoinHostPort(cfg.Extra.APIServerServiceIP.String(), strconv.Itoa(cfg.Extra.APIServerServicePort))})
	cfg.ControlPlane.Generic.DiscoveryAddresses = discoveryAddresses

	if cfg.Extra.ServiceNodePortRange.Size == 0 {

var (
	makeTypesImporter = func(cfg *Config, fset *token.FileSet) types.Importer {
		compilerImporter := importer.ForCompiler(fset, cfg.Compiler, func(path string) (io.ReadCloser, error) {
			// path is a resolved package path, not an import path.
			file, ok := cfg.PackageFile[path]
			if !ok {
				if cfg.Compiler == "gccgo" && cfg.Standard[path] {
					return nil, nil // fall back to default gccgo lookup