2.在PXE可选ROM开始启动之前,PXE可选ROM载入自检内存管理器(POST Memory Manager,$PMM)分配的内存期间被损坏或删除。
3.在载入ROM结构期间UNDI_Loader结构未被正确载入。
安装 环境准备 安装cobbler包光盘里是没有的，要配置epel源，这里就说怎么配置epel源了，在yum.repos.d/目录下照葫芦画瓢就可，配置好后执行如下命令安装
yum install –y cobbler
安装成功后，我们发现它还安装了其他的服务
备注：我们搭建cobbler-系统部署需要用到httpd、tftp-server、dhcp服务，从图上可以看出它没有安装dhcp服务，所以我们要安装下dhcp服务
yum install –y dhcp
开启服务http服务
systemctl start httpd
#开启服务
systemctl enable httpd
#设置开机自启动
tftp-server服务
systemctl start tftp
#开启服务
systemctl enable tftp
#开机自启动
cobbler服务
systemctl start cobblerd
#开启服务
systemctl enable cobblerd
#开机自启动
执行
cobbler check
#
会出现如下提示，配置缺少的东西
1 : The 'server' field in /etc/cobbler/settings must be set to something other than localhost, or kickstarting features will not work. This should be a resolvable hostname or IP for the boot server as reachable by all machines that will use it.
2 : 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.
3 : change 'disable' to 'no' in /etc/xinetd.d/tftp
4 : 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.
5 : enable and start rsyncd.service with systemctl
6 : debmirror package is not installed, it will be required to manage debian deployments and repositories
7 : 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
8 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them
OK 根据提示一步一步来解决
步骤一
1、第一个提示：在/etc/cobbler/settings 文件中server字段必须要有一个别人可访问的IP地址，来提供网络服务，那么我们是在centos7上搭建的所以是本机地址。
①编辑配置文件
vim etc/cobbler/settings
#编辑配置文件
②刷新配置文件并环境检查
systemctl restart cobblerd
#重启服务，重新读取修改的配置文件
cobbler check
#环境检查
步骤二
#环境检查后发现少了一项，那么下面接着还是从第一项开始操作
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 : change 'disable' to 'no' in /etc/xinetd.d/tftp
3 : 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.
4 : enable and start rsyncd.service with systemctl
5 : debmirror package is not installed, it will be required to manage debian deployments and repositories
6 : 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
7 : fencing tools were not found, and are required to use the (optional) power management features. install cman or fence-agents to use them
如上第一条：'next_server' 地址不应该是127.0.0.1
所以修改它的地址，这个地址也就是你tftp服务器所在的主机地址，我们把服务都安装在一台主机上了，所以和上面地址一样
①编辑配置文件
vim etc/cobbler/settings
#编辑配置文件
②重复步骤一中的②命令来重读配置文件与环境检查
步骤三