err := migrateCmd.Execute()
	if err != nil {
		klog.Errorf("Failed to execute migratecmd: %s", err)
	}
}

// runMigrate starts the migration.
func runMigrate() {
	if err := opts.validateAndDefault(); err != nil {
		klog.Fatalf("%v", err)
	}
	copyBinaries()

	target := &EtcdVersionPair{
		version:        MustParseEtcdVersion(opts.targetVersion),

		return fmt.Sprintf("etcd-%s", hostname), nil
	}
	return "", fmt.Errorf("defaulting --name failed due to all ETCD_NAME, ETCD_HOSTNAME and HOSTNAME unset")
}

func (opts *migrateOpts) validateAndDefault() error {
	var err error

	if opts.name == "" {
		klog.Infof("--name unset - falling back to %s variable", etcdNameEnv)
		if opts.name, err = defaultName(); err != nil {
			return err
		}
	}