红帽全球峰会7.2. 置备模板 PXELinux 发现片断
对于 BIOS 置备，Host > Provisioning Templates 窗口中的 PXELinux 全局默认模板 包含代码片段 pxelinux_discovery。该片段有以下行：
LABEL discovery MENU LABEL Foreman Discovery Image KERNEL boot/fdi-image/vmlinuz0 APPEND initrd=boot/fdi-image/initrd0.img rootflags=loop root=live:/fdi.iso rootfstype=auto ro rd.live.image acpi=force rd.luks=0 rd.md=0 rd.dm=0 rd.lvm=0 rd.bootif=0 rd.neednet=0 nomodeset proxy.url=<%= foreman_server_url %> proxy.type=foreman IPAPPEND 2
LABEL discovery
MENU LABEL Foreman Discovery Image
KERNEL boot/fdi-image/vmlinuz0
APPEND initrd=boot/fdi-image/initrd0.img rootflags=loop root=live:/fdi.iso rootfstype=auto ro rd.live.image acpi=force rd.luks=0 rd.md=0 rd.dm=0 rd.lvm=0 rd.bootif=0 rd.neednet=0 nomodeset proxy.url=<%= foreman_server_url %> proxy.type=foreman
IPAPPEND 2
KERNEL 和 APPEND 选项引导发现镜像和 ramdisk。APPEND 选项包含一个 proxy.url 参数，其中 foreman_server_url 宏作为其参数。此宏解析为 Satellite 服务器的完整 URL。
对于 UEFI 置备，Host > Provisioning Templates 窗口中的 PXEgrub2 全局默认模板 包含片断 pxegrub2_discovery ：
menuentry 'Foreman Discovery Image' --id discovery {
linuxefi boot/fdi-image/vmlinuz0 rootflags=loop root=live:/fdi.iso rootfstype=auto ro rd.live.image acpi=force rd.luks=0 rd.md=0 rd.dm=0 rd.lvm=0 rd.bootif=0 rd.neednet=0 nomodeset proxy.url=<%= foreman_server_url %> proxy.type=foreman BOOTIF=01-$mac
initrdefi boot/fdi-image/initrd0.img
}
menuentry 'Foreman Discovery Image' --id discovery {
linuxefi boot/fdi-image/vmlinuz0 rootflags=loop root=live:/fdi.iso rootfstype=auto ro rd.live.image acpi=force rd.luks=0 rd.md=0 rd.dm=0 rd.lvm=0 rd.bootif=0 rd.neednet=0 nomodeset proxy.url=<%= foreman_server_url %> proxy.type=foreman BOOTIF=01-$mac
initrdefi boot/fdi-image/initrd0.img
}
要使用 Capsule 代理发现步骤，请编辑 /var/lib/tftpboot/pxelinux.cfg/default 或 /var/lib/tftpboot/grub2/grub.cfg，并将 URL 更改为您要使用的 Capsule Server FQDN。
全局模板可用于 Satellite 服务器上，以及启用了 TFTP 功能的所有 Capsule。
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