重新检查之后，我们发现解决了2个问题。然后我们接着来看第一个问题。这个问题是说，next_server 字段也应该是一个具体的地址，而不应该是127.0.0.1.其实这个问题和上面我们修改过的问题是一样的。所以我们重新将next_server的地址修改为我们本机的地址。
修改之后，重新启动服务，并进行同步。
#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 : 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. 2 : enable and start rsyncd.service with systemctl 3 : debmirror package is not installed, it will be required to manage debian deployments and repositories 4 : 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 5 : 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.出现的问题继续减少了。我们接着来看第一个信息。这个信息是说，在/var/lib/cobbler/loaders 路径下，少了一些必须的文件，可以使用 cobbler get-loaders命令从网络中下载相关的文件。所以，接下来我们运行一下 cobbler get-loaders
# 可以看到 /var/lib/cobbler/loaders 目录下没有任何内容 [root@localhost ~]#ls /var/lib/cobbler/loaders [root@localhost ~]#cobbler get-loaders task started: 2017-09-20_084605_get_loaders task started (id=Download Bootloader Content, time=Wed Sep 20 08:46:05 2017)downloading https://cobbler.github.io/loaders/README to /var/lib/cobbler/loaders/README downloading https://cobbler.github.io/loaders/COPYING.elilo to /var/lib/cobbler/loaders/COPYING.elilo downloading https://cobbler.github.io/loaders/COPYING.yaboot to /var/lib/cobbler/loaders/COPYING.yaboot downloading https://cobbler.github.io/loaders/COPYING.syslinux to /var/lib/cobbler/loaders/COPYING.syslinux downloading https://cobbler.github.io/loaders/elilo-3.8-ia64.efi to /var/lib/cobbler/loaders/elilo-ia64.efi downloading https://cobbler.github.io/loaders/yaboot-1.3.17 to /var/lib/cobbler/loaders/yaboot downloading https://cobbler.github.io/loaders/pxelinux.0-3.86 to /var/lib/cobbler/loaders/pxelinux.0 downloading https://cobbler.github.io/loaders/menu.c32-3.86 to /var/lib/cobbler/loaders/menu.c32 downloading https://cobbler.github.io/loaders/grub-0.97-x86.efi to /var/lib/cobbler/loaders/grub-x86.efi downloading https://cobbler.github.io/loaders/grub-0.97-x86_64.efi to /var/lib/cobbler/loaders/grub-x86_64.efi *** TASK COMPLETE ***