Reset forgotten root password in Redhat 7

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Red Hat Enterprise Linux 7: Reset forgotten root password. This video tutorial is part of RHCSA Fast Track course. Please use below cookbook to reset forgotten or unknown password in Red Hat Enterprise Linux, CentOS Linux, Scientific Linux, Oracle Linux and Fedora. 1) Reset Linux server if it is running 2) press e to edit default entry on grub bootloader menu 3) replace keyword "rhgb quiet" with init=/bin/bash 4) press CTRL + x to boot into root shell 5) remount / (root) filesystem with read write options 5.1) / (root) filesystem is mounted with ro (read-only options) mount | grep -w "/" 5.2) remount / (root) filesystem with rw (read write) options mount -o remount,rw / 5.3) doublecheck if / root filesystem has been remouted with rw (read-write) options mount | grep -w "/" 6) Change root password passwd 7) relabel SELinux context for entire root filesystem Below command will ensure that the SELinux context for entire filesystem will be relabeled after reboot: touch /.autorelabel 8) Continue boot process - run exec /sbin/init command exec /sbin/init Related Video Tutorials: RHCSA Fast Track course: Reset forgotten root password in Redhat 7: https://youtu.be/cUG16kdYCxE Network Interface naming convention in Red Hat 7: https://youtu.be/oPLEYK-we1A Setting up network without NetworkManager in Redhat 7: https://youtu.be/WwzO2rzaXtI Setting up network using NetworkManager and network scripts in Redhat 7: https://youtu.be/7PwA__i9Bi0 Setting up network using a NetworkManager text user interface (nmtui) in Red Hat 7 - EASY!!! https://youtu.be/IKH1sCEjG2A Setting up network in Red Hat 7 in less than a minute - QUICK & EASY!!! https://youtu.be/TqMdzTPsjJY Setting up network using a NetworkManager command line interface (nmcli) in Red Hat 7 https://youtu.be/v-soSvSsw18 nmcli cheat! Setting up network using nmcli in Red Hat 7 in less than a 30 seconds - QUICK & EASY!!! https://youtu.be/NqEuucdSS60 The Complete Beginners Guide to Linux Network Configuration - GUI & Easy! https://youtu.be/1LcAdQWF6KQ Shrink ext2 ext3 and ext4 file system and reduce the size of a logical volume with only one command. https://youtu.be/tTpStv6cfeQ Complete guide to file system shrinking and reducing the size of the underlying logical volume. https://youtu.be/8AD8ZiYDavY

Published by: Business Server Solutions
Published at: ۴ years ago
Category: علمی و تکنولوژی