samba我在 Ubuntu Server Cuttlefish 上通过安装、krb5-config和对 Samba 和 Kerberos 进行了一些实验winbind。在交互模式下安装 Kerberos 时，它会询问一些问题以自动配置一些设置：
+------------------+ Configuring Kerberos Authentication +------------------+
| When users attempt to use Kerberos and specify a principal or user name |
| without specifying what administrative Kerberos realm that principal |
| belongs to, the system appends the default realm. The default realm may |
| also be used as the realm of a Kerberos service running on the local |
| machine. Often, the default realm is the uppercase version of the local |
| DNS domain. |
| |
| Default Kerberos version 5 realm: |
| |
| MYDOMAIN.COM________________________________________________________________ |
| |
| <Ok> |
| |
+---------------------------------------------------------------------------+
# specify the hostname
+------------------+ Configuring Kerberos Authentication +------------------+
| Enter the hostnames of Kerberos servers in the SRV.WORLD Kerberos |
| realm separated by spaces. |
| |
| Kerberos servers for your realm: |
| |
| dc1.mydomain.com____________________________________________________________ |
| |
| <Ok> |
| |
+---------------------------------------------------------------------------+
# specify the hostname
+------------------+ Configuring Kerberos Authentication +------------------+
| Enter the hostname of the administrative (password changing) server for |
| the SRV.WORLD Kerberos realm. |
| |
| Administrative server for your Kerberos realm: |
| |
| dc1.mydomain.com____________________________________________________________ |
| |
| <Ok> |
| |
+---------------------------------------------------------------------------+
弄乱一切后，我该如何正确清理服务器上的混乱，以便重新开始使用新域？最重要的是，如何重新启动 Kerberos 配置向导？