红帽全球峰会10.2. 对修改和引导菜单条目设置密码保护
您可以配置 GRUB 以防止菜单条目未经授权修改和引导。
警告
如果您忘记了 GRUB 密码，您将无法引导您重新配置的条目。
流程
-
打开您要修改
/boot/loader/entries/目录中的引导条目的引导加载程序规范(BLS)文件。 -
找到以
grub_users开头的行。此参数向menuentry传递额外的参数。 -
将
grub_users属性设置为除超级用户之外的、允许启动条目的用户名，默认情况下，此用户为root。
下面是一个配置文件示例：
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title Red Hat Enterprise Linux (4.18.0-221.el8.x86_64) 8.3 (Ootpa) version 4.18.0-221.el8.x86_64 linux /vmlinuz-4.18.0-221.el8.x86_64 initrd /initramfs-4.18.0-221.el8.x86_64.img $tuned_initrd options $kernelopts $tuned_params id rhel-20200625210904-4.18.0-221.el8.x86_64 grub_users root grub_arg --unrestricted grub_class kernel
title Red Hat Enterprise Linux (4.18.0-221.el8.x86_64) 8.3
(Ootpa)
version 4.18.0-221.el8.x86_64
linux /vmlinuz-4.18.0-221.el8.x86_64
initrd /initramfs-4.18.0-221.el8.x86_64.img $tuned_initrd
options $kernelopts $tuned_params
id rhel-20200625210904-4.18.0-221.el8.x86_64
grub_users root
grub_arg --unrestricted
grub_class kernel-
保存并关闭
BLS文件：
注意
如果要防止所有菜单条目引导，您可以直接设置 grub_users 属性。例如，如果用户是 root ：
grub2-editenv - set grub_users="root"
# grub2-editenv - set grub_users="root"
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