centos7设置grub密码

设置grub密码保护：

查看grub登录用户名cat /etc/grub.d/01_users,可以看到用户名为root。通过grub2-setpasswords设置grub密码，确认密码 cat /boot/grub2/user.cfg。重启后进入grub需要用户名和密码

 [root@localhost ~]# cat /etc/grub.d/01_users

#!/bin/sh -e

cat << EOF

if [ -f \${prefix}/user.cfg ]; then

  source \${prefix}/user.cfg

  if [ -n "\${GRUB2_PASSWORD}" ]; then

    set superusers="root"

    export superusers

    password_pbkdf2 root \${GRUB2_PASSWORD}

  fi

fi

EOF

[root@localhost ~]# grub2-setpasswords

-bash: grub2-setpasswords: command not found

[root@localhost ~]# grub2-setpassword

Enter password:

Confirm password:

[root@localhost ~]# cat /boot/grub2/user.cfg

GRUB2_PASSWORD=grub.pbkdf2.sha512.10000.44A14BB0A2FBA9511FE80754FB317AF04518F0FCB6C3D25454EB186AC7D84175C94595F5E8CC1AE127A5328CDCC5553DBB5C5C70928C0EAFDE675DC5B444D926.D45D10DF6E988AD8839EE2BAA746F5A962CFFC65C47FBF418F1A8211D890081E6619A9853586645A2E8CC69B50F7EF577308F28882574C31CA425849E78D2144

[root@localhost ~]#

 重启后，在引导界面，输入e进行grub配置编辑界面前，需要输入用户名和密码，root/xx密码