grub加密

grub加密有明文加密码和密文加密
命令：grub-md5-crypt
[root@lnmp01 rc.d]# grub-md5-crypt
Password:
Retype password:
$1$p9Y9a$Id5hMpbsHLNZFs0gPbRRI.
密码加密后密文：$1$p9Y9a$Id5hMpbsHLNZFs0gPbRRI.
配置/boot/grub/grub.conf
[root@lnmp01 rc.d]# vim /boot/grub/grub.conf

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/sda2
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
#在此处对grub加密

password --md5 $1$p9Y9a$Id5hMpbsHLNZFs0gPbRRI.
title CentOS 6 (2.6.32-504.el6.x86_64)
root (hd0,0)
如果password --md5 $1$p9Y9a$Id5hMpbsHLNZFs0gPbRRI.替换成：password 123456
则表示使用明文加密。