How to reset forgotten root password with single user mode- RHEL7 | CentOS 7

This video is show how to login into single user mode and reset root password in RHEL7. A step by step procedure for beginner to "how to login to single user mode and reset password in rhel7"

[@bhushanamrajendraprasad9821]

Why need to use in init=/bin/bash ?, second question : I saw different method for root password reset : rd.break console=tty in linux16 line and after that control X and change like mount -o remount,rw /sysroot; chown /sysroot;passwd root;touch /.autorelabel ; exit; exit, why this much need to do in RHEL 7 ?

[@kunjandesai4341]

Same question here, i have seen multiple videos with different options.

[@sophiaroselin6193]

Very pleasent explanation

[@bhuvanachandrakiran2849]

What are the common errors we get if we are using nfs server and samba services..?
Can you prepare a video on this...?

[@tunetolinux4173]

Yes I will.

[@justinphilip3147]

Is there any difference between single user mode or maintenance mode and emergency mode ?

[@tunetolinux4173]

Differences between Emergency and Rescue mode in Linux | RHEL7 |CentOS7 |Part-4th-cam.com/video/i3-CKvz3p64/w-d-xo.html

[@abdulnaveed2937]

When you change root password the shadow file is modified with incorrect SElinux context.
Either create a hidden file under root directory #touch /.autorelabel , on the next boot it will create a correct context . Note booting may take time if size of the disk is huge.
Other way around you can break the booting process, also assign enforcing=0 which makes SElinux temperory permissive so later you can restore the correct context on /etc/shadow and put back SElinux in enforcing mode.

[@kunjandesai4341]

From 4:00 to 4:35, you have run init command to reboot the system, can't we run "reboot" command itself to reboot the system?
Hope you answer it.
Thank you for the video.

[@tunetolinux4173]

In single user mode not all commands will be available. Hence we need to use init.

[@kunjandesai4341]

@@tunetolinux4173 ok.Thank you for the update.

[@balanagireddy2152]

please upload RHEL7 certification videos

[@tunetolinux4173]

I take offline course for certification. Let me know if you or anyone interested in redhat ansible automation ! (DO407) certification course.