首先我们来看第一个问题。信息提示，在/etc/cobbler/settings 这个配置文件中的server 字段一定要有一个其他主机能够访问到的主机名或者IP地址，否则KickStart的一些特性将无法使用。其实也很好理解，我们目前的主机是用来提供网络服务的。其他主机通过访问我们的Cobbler服务，进行下载安装操作系统，如果我们的Server字段别人不能访问，那怎么可以呢！ 所以打开该配置文件，修改server字段为本机的IP地址。
修改完成之后，我们注意到，之前的提示信息末尾有一段提示信息 Restart cobblerd and then run 'cobbler sync' to apply changes. ,所以我们运行一下这两个命令。
#重启服务 [root@localhost ~]#systemctl restart cobblerd #同步信息 [root@localhost ~]#cobbler sync ........... # 中间省略输出信息 # 重新检查一遍，看看还缺少哪些东西。 [root@localhost ~]#cobbler check The following are potential configuration items that you may want to fix: 1 : For PXE to be functional, the 'next_server' field in /etc/cobbler/settings must be set to something other than 127.0.0.1, and should match the IP of the boot server on the PXE network. 2 : some network boot-loaders are missing from /var/lib/cobbler/loaders, you may run 'cobbler get-loaders' to download them, or, if you only want to handle x86/x86_64 netbooting, you may ensure that you have installed a *recent* version of the syslinux package installed and can ignore this message entirely. Files in this directory, should you want to support all architectures, should include pxelinux.0, menu.c32, elilo.efi, and yaboot. The 'cobbler get-loaders' command is the easiest way to resolve these requirements. 3 : enable and start rsyncd.service with systemctl 4 : debmirror package is not installed, it will be required to manage debian deployments and repositories 5 : The default password used by the sample templates for newly installed machines (default_password_crypted in /etc/cobbler/settings) is still set to 'cobbler' and should be changed, try: "openssl passwd -1 -salt 'random-phrase-here' 'your-password-here'" to generate new one 6 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them Restart cobblerd and then run 'cobbler sync' to apply changes.