This article will help you to reset the root password on Redhat enterprise Linux 7 (If you have lost it). Unlike the previous version of RHEL releases , REHL 7 brought special attention by bringing the lot of new features on it. You need to follow some special instruction on Redhat Enterprise Linux 7 to break the root password since SE-Linux is enabled by default. In RHEL 6 , if you start the system in runlevel 1 , you will get the root prompt to reset the root user password.
Here we will see that how we can recover the lost root password on RHEL 7.
1. Reboot the system .
2. In the grub menu, press escape key to prevent the system from booting. Edit the grub menu by pressing “e” .
3.Press the arrow keys to get the “linux16” line and press “end” key. This will take you to the end of the line. Here add ” rd.break console=tty1 ” like below. Press control-x to boot the system.
4.You will get the “switch-root” prompt like below.
5. When you boot the system using “rd.break” , system will be directly mounted on /sysroot in read-only mode. Let me remount it in read/write mode.
switch_root:/# mount -o remount,rw /sysroot
6. Switch into a chroot jail, where /sysroot is treated as the root of the filesystem tree.
switch_root:/# chroot /sysroot
7.Set the new root password. (please update the CMDB immediately !)
sh-4.2# passwd root New password: Retype new password: passwd:all authentication tokens updated successfully.
8.By default, SE-Linux will be enabled on RHEL7 . So create a blank file in the name of “.autorelabel” under root.
sh-4.2# touch /.autorelabel
9. Exit from the chroot jail and exit from the initramfs.
10 . System will reboot and perform a full SELinux relabel , then reboot again.
11. once the system is rebooted, you will be able to login with new root password which you have set it .
Hope this article is informative to you .
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Bhuvi says
Thanks its really helpful
Phone Myint MYat Zaw says
Thank u sir….
Be graceful !!!!!!!
Manura says
Clear guidance. Thank you!
K venkatesh says
Super Lingesh, It’s worked fine.
samarjit adhikari says
great help for resetting root password.
Mohammad says
Great….it worked perfect for me. Thank you for sharing the info
DEVENDRAKUMAR YENNAM says
Simple for a first time user!! Helped me & excited to see it working! Thank you!
ALVIN CROFTS II says
Excellent – your awesome – Thanks!
IINHSO says
easy and simple way to reset root password
Gauthem says
Excellent!!
By the time i nearly made up my mind to destroy the partition and reinstall a fresh OS. This helps me a lot. Thank you very much!!!
Noel Benjaminn says
Thank You, this was of good help to me. Good One !!